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Results of: Search in every Kingdom for Scientific Name containing 'Phorbia'    Kingdom Animalia   Andrena euphorbiacea Scheuchl, 2005 – valid   Anthophorula euphorbiae (Timberlake, 1947) – valid   Argia euphorbia Fraser, 1946 – valid   Atholus euphorbiae Yélamos, 1993 – invalid   Atholus euphorbiae (Peyerimhoff, 1925) – valid   Boreophorbia – valid   Boreophorbia hirtipes (Stein, 1907) – valid   Calliopsis euphorbiae (Cockerell, 1925) – invalid   Cerceris euphorbiae Marquet, 1875 – invalid   Dryophytes euphorbiaceus (Günther, 1858) – valid   Exomalopsis euphorbiae Timberlake, 1947 – invalid   Heterosarus euphorbiae Timberlake, 1975 – invalid   Hyla euphorbiacea Günther, 1858 – invalid – Rana-de árbol de Los Altos-del Sur   Hyla euphorbiacea biseriata Smith, Langebartel and Williams, 1964 – invalid   Hyles euphorbiae (Linnaeus, 1758) – valid   Kirkaldiella euphorbiae Osborn, 1935 – valid   Macrophorbia houghi Malloch, 1920 – invalid   Macrosiphum euphorbiae (Thomas, 1878) – valid – potato aphid, puceron de la pomme de terre   Nomadopsis euphorbiae (Cockerell, 1925) – invalid   Nysson euphorbiae R. Bohart, 1968 – valid   Oceanides euphorbiae Ashlock, 1966 – valid   Oliarus euphorbiae Gifford, 1925 – valid   Oreopasites euphorbiae Cockerell, 1929 – valid   Pachycraerus euphorbiae Lewis, 1898 – valid   Parapalystes euphorbiae Croeser, 1996 – valid   Perdita euphorbiae Timberlake, 1954 – valid   Phorbia – valid   Phorbia barbicula (Huckett, 1948) – valid   Phorbia biciliata Coquillett, 1900 – invalid   Phorbia brevitarsata Malloch, 1919 – invalid   Phorbia cepetorum Meade, 1883 – invalid   Phorbia curvicauda (Zetterstedt, 1845) – valid   Phorbia exigua Meade, 1883 – invalid   Phorbia fascicularis Tiensuu, 1935 – valid   Phorbia fuscisquama Wulp, 1896 – invalid   Phorbia genitalis (Schnabl, 1911) – valid   Phorbia impula (Huckett, 1948) – valid   Phorbia lobata (Huckett, 1929) – valid   Phorbia lupini Coquillett, 1901 – invalid   Phorbia masculans (Huckett, 1948) – valid   Phorbia morosa Wulp, 1876 – invalid   Phorbia nitidula (Coquillett, 1903) – valid   Phorbia penicillaris (Stein, 1916) – valid   Phorbia perssoni Hennig, 1976 – invalid   Phorbia portensis (Huckett, 1948) – valid   Phorbia prisca Wulp, 1896 – invalid   Phorbia rubivora Coquillett, 1897 – invalid   Phorbia securis Tiensuu, 1935 – valid   Phorbia sinuata (Malloch, 1924) – valid   Phorbia sombrosa (Huckett, 1966) – valid   Plagithmysus euphorbiae (Bridwell, 1920) – valid   Platysoma euphorbiae Peyerimhoff, 1925 – invalid   Protandrena euphorbiae (Timberlake, 1955) – valid   Proterhinus euphorbiae Perkins, 1920 – valid   Psaenythia euphorbiae Timberlake, 1955 – invalid   Pseudopanurgus euphorbiae (Timberlake, 1975) – valid   Spinoliella euphorbiae Cockerell, 1925 – invalid   Xyletobius euphorbiae Perkins, 1910 – valid    Kingdom Plantae   Elaeophorbia Stapf – not accepted   Elaeophorbia acuta N.E. Br. – not accepted   Elaeophorbia beillei (A. Chev.) Jacobsen – not accepted   Elaeophorbia drupifera (Thonn.) Stapf – not accepted   Elaeophorbia grandifolia (Haw.) Croizat – not accepted   Elaeophorbia hiernii Croizat – not accepted   Elaeophorbia leonensis (N.E. Br.) Jacobsen – not accepted   Elaeophorbia neriifolia (L.) A. Chev. – not accepted   Elaeophorbia teke (Schweinf. ex Pax) A. Chev. – not accepted   Euphorbia L. – accepted – spurge   Euphorbia aaron-rossii A.H. Holmgren & N.H. Holmgren – accepted – Marble Canyon spurge, Ross spurge   Euphorbia abbottii Baker – accepted   Euphorbia abbreviata Correll – not accepted   Euphorbia abchazica Woronow – not accepted   Euphorbia abdelkuri Balf. f. – accepted – Firhadh   Euphorbia abdita (D.G. Burch) Radcl.-Sm. – accepted   Euphorbia abdulghafooriana Abedin – accepted   Euphorbia abolinii Korovin ex Pavlov – not accepted   Euphorbia abortiva Porta – not accepted   Euphorbia abramsiana L.C. Wheeler – accepted – Abrams' sandmat   Euphorbia abscondita Mayfield – accepted   Euphorbia abyssinica J.F. Gmel. – accepted   Euphorbia abyssinica var. erythraeae Berger – not accepted   Euphorbia abyssinica var. mozambicensis Boiss. – not accepted   Euphorbia abyssinica var. tetragona Schweinf. – not accepted   Euphorbia acalyphoides Hochst. ex Boiss. – accepted   Euphorbia acalyphoides ssp. acalyphoides Hochst. ex Boiss. – accepted   Euphorbia acalyphoides ssp. cicatricosa S. Carter – accepted   Euphorbia acalyphoides var. arabica Boiss. – not accepted   Euphorbia acanthodes Akhani – accepted   Euphorbia acanthothamnos Heldr. & Sart. ex Boiss. – accepted   Euphorbia acaulis Roxb. – not accepted   Euphorbia acerensis Boiss. – accepted   Euphorbia acervata S. Carter – accepted   Euphorbia achanocarpa Guss. ex Spreng. – not accepted   Euphorbia acrurensis N.E. Br. – not accepted   Euphorbia actinoclada S. Carter – accepted   Euphorbia aculeata E. Mey. – not accepted   Euphorbia acuminata Lam. – not accepted   Euphorbia acuta Engelm. – accepted – Pointed sandmat   Euphorbia acuta var. stenophylla Boiss. – not accepted   Euphorbia acutifolia (Boiss.) Rech. f. – not accepted   Euphorbia adenensis Deflers – not accepted   Euphorbia adenochila S. Carter – accepted   Euphorbia adenochlora C. Morren & Decne. – accepted   Euphorbia adenopoda Baill. – accepted   Euphorbia adenoptera Bertol. – accepted – southern Florida sandmat   Euphorbia adenoptera ssp. adenoptera Bertol. – accepted   Euphorbia adenoptera ssp. canescens (Proctor) Oudejans – accepted   Euphorbia adenoptera ssp. gundlachii (Urb.) Oudejans – accepted   Euphorbia adenoptera ssp. pergamena (Small) Oudejans – not accepted – southern Florida sandmat   Euphorbia adenoptera var. indivisa (Engelm.) Boiss. – not accepted   Euphorbia adhaerens (Small) Jabl. – not accepted   Euphorbia adiantoides Lam. – accepted   Euphorbia adinophylla Donn. Sm. – not accepted   Euphorbia adjurana P.R.O. Bally & S. Carter – accepted   Euphorbia adriana A. St.-Hil. ex Klotzsch & Garcke – not accepted   Euphorbia aegyptiaca Boiss. – not accepted   Euphorbia aegyptiaca var. indica Boiss. – not accepted   Euphorbia aellenii Rech. f. – not accepted   Euphorbia aequoris N.E. Br. – accepted   Euphorbia aeruginosa Schweick. – accepted   Euphorbia aethiopum Croizat – not accepted   Euphorbia affinis DC. – not accepted   Euphorbia affinis (Klotzsch & Garcke) Boiss. – not accepted   Euphorbia afzelii N.E. Br. – not accepted   Euphorbia agatheae Haevermans – accepted   Euphorbia aggregata A. Berger – accepted   Euphorbia aggregata var. alternicolor (N.E. Br.) A.C. White, R.A. Dyer & B. Sloane – not accepted   Euphorbia agowensis Hochst. ex Boiss. – accepted   Euphorbia agowensis var. agowensis Hochst. ex Boiss. – accepted   Euphorbia agowensis var. pseudoholstii (Pax) P.R.O. Bally & S. Carter – accepted   Euphorbia agraria M. Bieb. – accepted – urban spurge   Euphorbia agraria var. csatoi Simonk. – not accepted   Euphorbia agraria var. subhastata (Vis. & Pancic) Gris – not accepted   Euphorbia agraria var. thyrsiflora (Griseb.) Nyman – not accepted   Euphorbia agrorum Willd. ex Ledeb. – not accepted   Euphorbia akdaghensis Stapf – not accepted   Euphorbia akenocarpa Guss. – accepted   Euphorbia akenocarpa Roux & Blaise ex Boiss. – not accepted   Euphorbia akmanii I. Genç & Kültür – accepted   Euphorbia alaica (Prokh.) Prokh. – accepted   Euphorbia alainii Oudejans – accepted   Euphorbia alata Hook. – accepted   Euphorbia alatavica Boiss. – accepted   Euphorbia alatavica f. kaschgarica (Regel) Baikov – not accepted   Euphorbia alatocaulis V.W. Steinm. & Felger – accepted   Euphorbia albanica N.E. Br. – accepted   Euphorbia albicaulis Rydb. – not accepted   Euphorbia albiflora Taub. – not accepted   Euphorbia albipollinifera L.C. Leach – accepted   Euphorbia albomarginata Torr. & A. Gray – accepted – whitemargin sandmat, Rattlesnake weed, white-margin sandmat, white-margin sandwort   Euphorbia albovillosa Pax – not accepted   Euphorbia alcicornis Baker – accepted   Euphorbia alcicornis Poiss. – not accepted   Euphorbia aleppica L. – accepted   Euphorbia alexandrina Delile – not accepted   Euphorbia alfredii Rauh – accepted   Euphorbia algeriensis Boiss. – not accepted   Euphorbia aliceae A. Nelson – not accepted   Euphorbia allocarpa S. Carter – accepted   Euphorbia alluaudii Drake – accepted   Euphorbia alluaudii ssp. alluaudii Drake – accepted   Euphorbia alluaudii ssp. oncoclada (Drake) F. Friedmann & Cremers – accepted   Euphorbia alpigena A. Kern. – not accepted   Euphorbia alpina Ledeb. – accepted   Euphorbia alpina var. baikalensis Boiss. – not accepted   Euphorbia alpina var. rupicola Baikov – not accepted   Euphorbia alsiniflora Baill. – accepted   Euphorbia alsinifolia Boiss. – accepted   Euphorbia alsinoides Miq. – accepted   Euphorbia alta Norton – accepted – giant spurge   Euphorbia altaica Ledeb. – accepted   Euphorbia altaica var. pilosa Stschegl. – not accepted   Euphorbia altaica var. sajanensis Boiss. – not accepted   Euphorbia alternicolor N.E. Br. – not accepted   Euphorbia altissima Boiss. – accepted   Euphorbia altissima var. altissima Boiss. – accepted   Euphorbia altissima var. glabrescens Boiss. ex M.S. Khan – accepted   Euphorbia altissima var. nuda Velen. – not accepted   Euphorbia altotibetica Paulsen – accepted   Euphorbia amandi Oudejans – accepted   Euphorbia amarifontana N.E. Br. – accepted   Euphorbia ambacensis N.E. Br. – accepted   Euphorbia ambarivatoensis Rauh & Bard.-Vauc. – accepted   Euphorbia ambatofinandranae Leandri – not accepted   Euphorbia ambigua Waldst. & Kit. ex Willd. – not accepted   Euphorbia ambovombensis Rauh & Razaf. – accepted   Euphorbia ambroseae L.C. Leach – accepted   Euphorbia ambroseae var. ambroseae L.C. Leach – accepted   Euphorbia ambroseae var. spinosa L.C. Leach – accepted   Euphorbia ambukensis Stepanov – not accepted   Euphorbia amicorum S. Carter – accepted   Euphorbia ammak Schweinf. – accepted   Euphorbia ammannioides Kunth – not accepted   Euphorbia ammatotricha Boiss. – not accepted   Euphorbia ammophila S. Carter & Dioli – accepted   Euphorbia amoena Klotzsch – not accepted   Euphorbia amphimalaca Standl. – not accepted   Euphorbia ampla Hook. f. – not accepted   Euphorbia ampla var. tenuior Hook. f. – not accepted   Euphorbia amplexicaulis Hook. f. – accepted   Euphorbia amplexicaulis Ledeb. – not accepted   Euphorbia amplophylla Pax – accepted   Euphorbia amygdaloides L. – accepted   Euphorbia amygdaloides Lam. – not accepted   Euphorbia amygdaloides f. biennis (Maire) Oudejans – not accepted   Euphorbia amygdaloides f. ligulata (Chaub.) O. Bolòs & Vigo – not accepted   Euphorbia amygdaloides f. minor (Gaudin) Oudejans – not accepted   Euphorbia amygdaloides f. purpurata (Coss. & Germ.) Oudejans – not accepted   Euphorbia amygdaloides ssp. amygdaloides L. – accepted   Euphorbia amygdaloides ssp. arbuscula Meusel – accepted   Euphorbia amygdaloides ssp. chaixiana (Timb.-Lagr.) Nyman – not accepted   Euphorbia amygdaloides ssp. heldreichii (Orph. ex Boiss.) Aldén – not accepted   Euphorbia amygdaloides ssp. robbiae (Turrill) Stace – accepted   Euphorbia amygdaloides ssp. semiperfoliata (Viv.) Radcl.-Sm. – not accepted   Euphorbia amygdaloides var. biennis Maire – not accepted   Euphorbia amygdaloides var. chaixiana (Timb.-Lagr.) Boiss. – not accepted   Euphorbia amygdaloides var. ligulata (Chaub.) Boiss. – not accepted   Euphorbia amygdaloides var. oblongifolia K. Koch – not accepted   Euphorbia amygdaloides var. robbiae (Turrill) Radcl.-Sm. – not accepted   Euphorbia anacampseroides Lam. – not accepted   Euphorbia anacampseros Boiss. – accepted   Euphorbia anacampseros Balansa ex Boiss. – not accepted   Euphorbia anacampseros var. anacampseros Boiss. – accepted   Euphorbia anacampseros var. minor Boiss. – not accepted   Euphorbia anacampseros var. tmolae M.S. Khan – accepted   Euphorbia anacantha Aiton – not accepted   Euphorbia anachoreta Svent. – accepted   Euphorbia anagalloides Baker – not accepted   Euphorbia analalavensis Leandri – accepted   Euphorbia analamerae Leandri – accepted   Euphorbia analavelonensis Rauh & Mangelsdorff – accepted   Euphorbia anceps Benth. – not accepted   Euphorbia ancyrensis Azn. ex M.S. Khan – not accepted   Euphorbia anderssonii Millsp. – not accepted   Euphorbia andina Phil. – not accepted   Euphorbia andongensis Hiern – not accepted   Euphorbia andrachnoides Schrenk – accepted   Euphorbia andromedae Millsp. – not accepted   Euphorbia androsaemifolia Willd. ex Schlecht. – accepted   Euphorbia androsaemifolia (Haw.) Steud. – not accepted   Euphorbia androsaemifolia J. Presl & C. Presl – not accepted   Euphorbia androsaemifolia ssp. salicetorum (Jord.) Nyman – not accepted   Euphorbia androsaemoides Dennst. – not accepted   Euphorbia angolensis Pax – not accepted   Euphorbia angrae N.E. Br. – accepted   Euphorbia angularis Klotzsch – accepted   Euphorbia angulata Jacq. – accepted   Euphorbia angulata f. nemoralis Oudejans – not accepted   Euphorbia angulata ssp. deseglisei (Boreau ex Boiss.) Nyman – not accepted   Euphorbia angulata var. expansa (Janka) Boiss. – not accepted   Euphorbia angusta Engelm. – accepted – Blackfoot sandmat, narrow-leaf spurge   Euphorbia angustiflora Pax – accepted   Euphorbia angustifolia (Haw.) Steud. – not accepted   Euphorbia angustifolia Lockh. ex G. Don – not accepted   Euphorbia angustifolia Buch.-Ham. ex D. Don – not accepted   Euphorbia angustifolia Parodi – not accepted   Euphorbia anisopetala (Prokh.) Prokh. – accepted   Euphorbia ankaranae Leandri – accepted   Euphorbia ankarensis Boiteau – accepted   Euphorbia ankazobensis Rauh & Hofstätter – accepted   Euphorbia annamarieae Rauh – accepted   Euphorbia annulata Nutt. ex Sherff – not accepted   Euphorbia anomala Salzm. ex Boiss. – not accepted   Euphorbia anomala Pax – not accepted   Euphorbia antankara Leandri – not accepted   Euphorbia anthonyi Brandegee – accepted   Euphorbia anthonyi var. clarionensis (Brandegee) I.M. Johnst. – not accepted   Euphorbia anthula Lavrent. & Papan. – accepted   Euphorbia antilibanotica Mouterde – accepted   Euphorbia antiquorum L. – accepted   Euphorbia antiquorum var. polygona Boiss. – not accepted   Euphorbia antisyphilitica Zucc. – accepted – candelilla   Euphorbia antisyphilitica var. luxurians Miranda – not accepted   Euphorbia antisyphilitica var. typica Miranda – not accepted   Euphorbia antisyphylitica Zucc. – not accepted   Euphorbia antonii Oudejans – accepted   Euphorbia antso Denis – accepted – Antso   Euphorbia anychioides Boiss. – accepted   Euphorbia apatzingana McVaugh – accepted   Euphorbia aphylla Brouss. ex Willd. – accepted   Euphorbia apicata L.C. Wheeler – accepted   Euphorbia apiculata Andersson – not accepted   Euphorbia apios L. – accepted   Euphorbia apios var. lamprocarpa Boiss. – not accepted   Euphorbia apocynifolia Small – not accepted   Euphorbia apocynoides Klotzsch – not accepted   Euphorbia appariciana Rizzini – accepted   Euphorbia appendiculata P.R.O. Bally & S. Carter – accepted   Euphorbia applanata Thulin & Al-Gifri – accepted   Euphorbia aprica Baill. – accepted   Euphorbia apurimacensis Croizat – accepted   Euphorbia arabica Hochst. & Steud. ex Anderson – accepted   Euphorbia arabica var. brevifolia Boiss. – not accepted   Euphorbia arabica var. latippendiculata Pax – not accepted   Euphorbia arabicoides N.E. Br. – accepted   Euphorbia aragonensis Loscos & Pardo – not accepted   Euphorbia aragonensis ssp. bolosii (Molero & Rovira) Rivas Mart. – not accepted   Euphorbia aragonensis var. lanceolatifolia Loscos & Pardo ex Lange – not accepted   Euphorbia arahaka Poiss. – accepted – Arahaka, Arahaky   Euphorbia ararica Jord. – not accepted   Euphorbia araucana Phil. – accepted   Euphorbia arborescens Roxb. – not accepted   Euphorbia arborescens E. Mey. – not accepted   Euphorbia arborescens C. Sm. – not accepted   Euphorbia arborescens Boiss. – not accepted   Euphorbia arborescens Salm-Dyck – not accepted   Euphorbia arbuscula Balf. f. – accepted   Euphorbia ardonensis Galushko – accepted   Euphorbia arenaria Kunth – accepted   Euphorbia arenaria Engelm. & A. Gray – not accepted   Euphorbia arenaria Nutt. – not accepted   Euphorbia arenaria Willd. ex Ledeb. – not accepted   Euphorbia arenaria var. quitensis Boiss. – not accepted   Euphorbia arenarioides Gagnep. – accepted   Euphorbia arenicola Parish – not accepted   Euphorbia argillosa Chodat & Hassl. – accepted   Euphorbia arguta Banks & Sol. – accepted   Euphorbia arguta var. dasycarpa Plitmann – not accepted   Euphorbia arida N.E. Br. – accepted   Euphorbia ariensis Kunth – accepted   Euphorbia ariensis var. villicaulis Fernald – not accepted   Euphorbia arillata Edgew. – not accepted   Euphorbia aristata Schmalh. – accepted   Euphorbia arizonica Engelm. – accepted – Arizona sandmat   Euphorbia arkansana Engelm. & A. Gray – not accepted   Euphorbia arkansana var. atrosemina Norton – not accepted   Euphorbia arkansana var. coloradensis Norton – not accepted   Euphorbia arkansana var. missouriensis Norton – not accepted   Euphorbia armata Thunb. – not accepted   Euphorbia armena Boiss. – not accepted   Euphorbia armeniaca Boiss. – not accepted   Euphorbia armourii Millsp. – accepted   Euphorbia armstrongiana Boiss. – accepted   Euphorbia arnottiana Endl. – accepted – `akoko   Euphorbia arnottiana var. integrifolia (Hillebr.) H. St. John – not accepted   Euphorbia arrecta N.E. Br. – accepted   Euphorbia arsenariensis (Batt.) Batt. & Trab. – not accepted   Euphorbia artaudiana DC. – not accepted   Euphorbia arteagae W.R. Buck & Huft – accepted   Euphorbia articulata Burm. – not accepted – jointed sandmat   Euphorbia articulata Burm. in C. Plumier – not accepted   Euphorbia articulata Dennst. – not accepted   Euphorbia articulata Andersson – not accepted   Euphorbia articulata var. bindloensis A. Stewart – not accepted   Euphorbia articulata var. lordatii Stehlé & Stehlé – not accepted   Euphorbia artifolia N.E. Br. – accepted   Euphorbia artvinensis Bornm. & Woronow – not accepted   Euphorbia arundelana Bartlett – not accepted   Euphorbia arvalis Boiss. & Heldr. – accepted   Euphorbia arvalis ssp. arvalis Boiss. & Heldr. – accepted   Euphorbia arvalis ssp. longistyla (Litard. & Maire) Molero, Rovira & Vicens – accepted   Euphorbia arvalis var. euarvalis Maire – not accepted   Euphorbia arvalis var. longistyla Litard. & Maire – not accepted   Euphorbia arvensis Kit. – not accepted   Euphorbia arvensis Schleich. ex Steud. – not accepted   Euphorbia ascendens Willd. ex Boiss. – not accepted   Euphorbia asclepiadea Milne-Redh. – accepted   Euphorbia aserbajdzhanica Bordz. – accepted   Euphorbia aspera M. Bieb. – not accepted   Euphorbia aspera var. oligadenia Boiss. – not accepted   Euphorbia aspera var. serrata Boiss. – not accepted   Euphorbia aspericaulis Pax – accepted   Euphorbia asperifolia Engelm. ex Boiss. – not accepted   Euphorbia asthenacantha S. Carter – accepted   Euphorbia astrachanica C.A. Mey. ex Claus – accepted   Euphorbia astrispina N.E. Br. – not accepted   Euphorbia astroites Fisch. & C.A. Mey. – not accepted   Euphorbia astroites var. heterappendiculata Millsp. – not accepted   Euphorbia astyla Engelm. ex Boiss. – accepted – alkali sandmat, Pecos spurge   Euphorbia atlantica Pers. – not accepted   Euphorbia atlantica Coss. ex Boiss. – not accepted   Euphorbia atlantica var. leiocarpa Boiss. – not accepted   Euphorbia atlantica var. major Boiss. – not accepted   Euphorbia atlantica var. villosa Faure & Maire – not accepted   Euphorbia atlantis Maire – not accepted   Euphorbia atlantis f. major (Boiss.) Vindt – not accepted   Euphorbia atlantis var. leiocarpa (Boiss.) Oudejans – not accepted   Euphorbia atlantis var. major (Boiss.) Oudejans – not accepted   Euphorbia atlantis var. villosa (Faure & Maire) Vindt – not accepted   Euphorbia atoto G. Forst. – accepted   Euphorbia atoto var. imbricata Boiss. – not accepted   Euphorbia atoto var. minor Boiss. – not accepted   Euphorbia atrocarmesina L.C. Leach – accepted   Euphorbia atrocarmesina ssp. arborea L.C. Leach – accepted   Euphorbia atrocarmesina ssp. atrocarmesina L.C. Leach – accepted   Euphorbia atrococca A. Heller – accepted – koko   Euphorbia atrococca var. kilaueana Sherff – not accepted   Euphorbia atrococca var. kokeeana Sherff – not accepted   Euphorbia atrococca var. typica Sherff – not accepted   Euphorbia atroflora S. Carter – accepted   Euphorbia atropurpurea Brouss. ex Willd. – accepted   Euphorbia atropurpurea f. atropurpurea Brouss. ex Willd. – accepted   Euphorbia atropurpurea f. lutea A. Santos – accepted   Euphorbia atropurpurea var. modesta Svent. – not accepted   Euphorbia atrorubens Engelm. ex Boiss. – not accepted   Euphorbia atrosanguinea Poepp. ex Klotzsch – not accepted   Euphorbia atrox F.K. Horw. ex S. Carter – accepted   Euphorbia attastoma Rizzini – accepted   Euphorbia attastoma var. xanthochlora Rizzini – not accepted   Euphorbia aubryana Baill. – not accepted   Euphorbia aucheri Boiss. – accepted   Euphorbia audissoui Marx – accepted   Euphorbia aulacosperma Boiss. – accepted   Euphorbia aulacosperma var. fossulata (Boiss. & Gaill.) Boiss. – not accepted   Euphorbia aureocincta Croizat – not accepted   Euphorbia aureoviridiflora (Rauh) Rauh – accepted   Euphorbia auricularia Boiss. – not accepted   Euphorbia australis Boiss. – accepted   Euphorbia australis var. canescens Domin – not accepted   Euphorbia australis var. erythrantha (F. Muell.) Benth. – not accepted   Euphorbia australis var. glabrescens Boiss. – not accepted   Euphorbia australis var. glaucescens Boiss. – not accepted   Euphorbia australis var. potentillina Baill. – not accepted   Euphorbia australis var. semiglabra Domin – not accepted   Euphorbia australis var. subtomentosa Domin – not accepted   Euphorbia australis var. typica Domin – not accepted   Euphorbia austriaca A. Kern. – accepted   Euphorbia austriaca ssp. sojakii Chrtek & Krísa – not accepted   Euphorbia austrina (Small) Jabl. – not accepted   Euphorbia austro-occidentalis Thell. – accepted   Euphorbia austroanatolica Hub.-Mor. & M.S. Khan – accepted   Euphorbia austrotexana Mayfield – accepted   Euphorbia austrotexana var. austrotexana Mayfield – accepted   Euphorbia austrotexana var. carrii Mayfield – accepted   Euphorbia avasmontana Dinter – accepted   Euphorbia avenia Thibaut ex Pers. – not accepted   Euphorbia awashensis M.G. Gilbert – accepted   Euphorbia azorica Hochst. – accepted – Erva-leitera   Euphorbia azorica Welw. ex Boiss. – not accepted   Euphorbia babensis Kit. – not accepted   Euphorbia bachmannii Pax – not accepted   Euphorbia backeri Pax & K. Hoffm. – not accepted   Euphorbia baetica Boiss. – accepted   Euphorbia baga A. Chev. – accepted   Euphorbia baga var. baga A. Chev. – accepted   Euphorbia baga var. parvifolia L.E. Newton – accepted   Euphorbia bahiensis (Klotzsch & Garcke) Boiss. – accepted   Euphorbia baillonii Boiss. ex Baill. – not accepted   Euphorbia baioensis S. Carter – accepted   Euphorbia bakeriana Baill. – not accepted   Euphorbia balakrishnanii Binojk. & Gopalan – accepted   Euphorbia balearica Poir. ex Klotzsch & Garcke – not accepted   Euphorbia baleensis M.G. Gilbert – accepted   Euphorbia balkhanica Tarassov – not accepted   Euphorbia ballyana Rauh – accepted   Euphorbia ballyi S. Carter – accepted   Euphorbia balsamea Welw. ex Hiern – not accepted   Euphorbia balsamifera Aiton – accepted   Euphorbia balsamifera ssp. adenensis (Deflers) P.R.O. Bally – accepted   Euphorbia balsamifera ssp. balsamifera Aiton – accepted   Euphorbia balsamifera ssp. sepium (N.E. Br.) Maire – not accepted   Euphorbia banae Rauh – accepted   Euphorbia bancana Miq. – not accepted   Euphorbia baradii S. Carter – accepted   Euphorbia barbellata Engelm. – not accepted   Euphorbia barbellata Hurus. – not accepted   Euphorbia barbellata f. denudata (Hurus.) Kitag. – not accepted   Euphorbia barbellata var. imaii (Hurus.) Kitag. – not accepted   Euphorbia barbicarina (Millsp.) Standl. – not accepted   Euphorbia barbicollis P.R.O. Bally – accepted   Euphorbia bariensis S. Carter – accepted   Euphorbia barkeri Urb. & Ekman – not accepted   Euphorbia barnardii A.C. White, R.A. Dyer & B. Sloane – accepted   Euphorbia barnesii (Millsp.) Oudejans – accepted   Euphorbia barnhartii Croizat – not accepted   Euphorbia barrelieri Savi – accepted   Euphorbia barrelieri ssp. barrelieri Savi – accepted   Euphorbia barrelieri ssp. carnica (Boiss.) Kuzmanov – not accepted   Euphorbia barrelieri ssp. hercegovina (Beck) Kuzmanov – not accepted   Euphorbia barrelieri ssp. thessala (Formánek) Bornm. – accepted   Euphorbia barrelieri var. carnica (Boiss.) Fiori – not accepted   Euphorbia barrelieri var. thessala (Formánek) K. Malý – not accepted   Euphorbia barteri N.E. Br. – not accepted   Euphorbia bartolomaei Greene – accepted   Euphorbia basarabica Prodán – accepted   Euphorbia basargica Prodán – accepted   Euphorbia baselicis Ten. – not accepted   Euphorbia baselicis ssp. thessala Formánek – not accepted   Euphorbia baselicis var. rupestris Friraldszky ex Boiss. – not accepted   Euphorbia basutica Marloth – not accepted   Euphorbia batabanensis Urb. – not accepted   Euphorbia baueri Engelm. ex Boiss. – accepted   Euphorbia baxanica Galushko – not accepted   Euphorbia bayeri L.C. Leach – accepted   Euphorbia baylissii L.C. Leach – accepted   Euphorbia beamanii M.C. Johnst. – accepted   Euphorbia beaumieriana Hook. f. & Coss. – not accepted   Euphorbia beckii V.W. Steinm. – accepted   Euphorbia begoniifolia Lehm. – not accepted   Euphorbia beharensis Leandri – accepted   Euphorbia beharensis var. adpressifolia Rauh – accepted   Euphorbia beharensis var. beharensis Leandri – accepted   Euphorbia beharensis var. guillemetii (Ursch & Leandri) Rauh – accepted   Euphorbia beharensis var. squarrosa Rauh – accepted   Euphorbia beharensis var. truncata Rauh – accepted   Euphorbia beillei A. Chev. – accepted   Euphorbia bejariensis DC. – not accepted   Euphorbia bemarahaensis Rauh & Mangelsdorff – accepted   Euphorbia benedicta Greene – not accepted   Euphorbia benguelensis Pax – not accepted   Euphorbia benthamii Hiern – accepted   Euphorbia berevoensis Lawant & Buddens. – accepted   Euphorbia bergeriana Dinter – not accepted   Euphorbia bermudiana Millsp. – not accepted   Euphorbia berorohae Rauh & Hofstätter – accepted   Euphorbia berotica N.E. Br. – accepted   Euphorbia bertemariae Bisseret & Dioli – accepted   Euphorbia berteriana Balb. ex Spreng. – not accepted   Euphorbia berteroana Balb. ex Spreng. – accepted – Bertero's sandmat   Euphorbia berthelotii Bolle ex Boiss. – accepted   Euphorbia berythea Boiss. & Blanche – accepted   Euphorbia besseri (Klotzsch & Garcke) Boiss. – accepted   Euphorbia betacea Baill. – accepted   Euphorbia betulicortex M.G. Gilbert – accepted   Euphorbia beuginii Rebmann – accepted   Euphorbia bevilaniensis Croizat – not accepted   Euphorbia biaculeata Denis – accepted   Euphorbia bialata Link – not accepted   Euphorbia bianoensis (Malaisse & Lecron) Bruyns – accepted   Euphorbia bicapitata Brandegee – not accepted   Euphorbia bicephala Bertol. – not accepted   Euphorbia bicolor Engelm. & A. Gray – accepted – snow on the prairie, snow-on-the-prairie   Euphorbia bicolor var. concolor Engelm. & A. Gray – not accepted   Euphorbia bicompacta Bruyns – accepted   Euphorbia bicompacta var. bicompacta Bruyns – accepted   Euphorbia bicompacta var. rubra (S. Carter) Bruyns – accepted   Euphorbia biconvexa Domin – accepted   Euphorbia bifida auct. non Hook. & Arn. – not accepted   Euphorbia bifida Hook. & Arn. – accepted   Euphorbia bifida Thwaites – not accepted   Euphorbia biformis S. Watson – not accepted   Euphorbia bifurcata Engelm. – accepted – forked spurge   Euphorbia biglandulosa Desf. – not accepted   Euphorbia biglandulosa Boiss. – not accepted   Euphorbia biglandulosa Willd. – not accepted   Euphorbia biglandulosa var. mauretanica Maire – not accepted   Euphorbia biharamulensis S. Carter – accepted   Euphorbia bilobata Engelm. – accepted – blackseed spurge, black-seed spurge   Euphorbia bilocularis N.E. Br. – not accepted   Euphorbia bimensis Miq. – not accepted   Euphorbia bindloensis (A. Stewart) Ya Yang – accepted   Euphorbia biramensis Urb. – not accepted   Euphorbia biselegans Bruyns – accepted   Euphorbia bisellenbeckii Bruyns – accepted   Euphorbia biserrata Millsp. – not accepted   Euphorbia bisglobosa Bruyns – accepted   Euphorbia bisulcata J.T. Howell – not accepted   Euphorbia bitataensis M.G. Gilbert – accepted   Euphorbia biumbellata Poir. – accepted   Euphorbia biumbellata Boiss. – not accepted   Euphorbia biuncialis McVaugh – not accepted   Euphorbia bivonae Steud. – accepted   Euphorbia bivonae ssp. bivonae Steud. – accepted   Euphorbia bivonae ssp. tunetana Murb. – accepted   Euphorbia bivonae var. mauritii Sennen – not accepted   Euphorbia bivonae var. melitensis (Parl.) Fiori – not accepted   Euphorbia bivonae var. montana Lojac. – not accepted   Euphorbia bivonae var. papillaris Boiss. – not accepted   Euphorbia bivonae var. tangerina Pau – not accepted   Euphorbia blanchetii Miq. ex Boiss. – not accepted   Euphorbia blatteri Oudejans – accepted   Euphorbia blepharophylla Ledeb. – accepted   Euphorbia blepharostipula Millsp. ex Rose – not accepted   Euphorbia blodgettii Engelm. ex Hitchc. – accepted – limestone sandmat   Euphorbia bodenghieniae (Malaisse & Lecron) Bruyns – accepted   Euphorbia bodinieri H. Lév. & Vaniot – not accepted   Euphorbia boerhaavioides Rusby – accepted   Euphorbia boerhaviifolia (Klotzsch & Garcke) Boiss. – not accepted   Euphorbia boinensis Denis ex Humbert & Leandri – accepted   Euphorbia boissieri Baill. – accepted   Euphorbia boissieriana (Woronow) Prokh. – not accepted   Euphorbia boiteaui Leandri – accepted   Euphorbia boiteaui var. ampanihyensis (Cremers) J.-P. Castillon & J.-B. Castillon – accepted   Euphorbia boiteaui var. boiteaui Leandri – accepted   Euphorbia boiteaui var. supraterra (Rauh & Buchloh) J.-P. Castillon & J.-B. Castillon – accepted   Euphorbia boivinii Boiss. – accepted   Euphorbia boivinii var. boivinii Boiss. – accepted   Euphorbia boivinii var. minor Leandri – accepted   Euphorbia boivinii var. oreades Leandri – accepted   Euphorbia bokorensis H. Toyama & Tagane – accepted   Euphorbia boliviana Rusby – not accepted   Euphorbia bolosii (Molero & Rovira) Molero & Rovira – not accepted   Euphorbia bolusii N.E. Br. – not accepted   Euphorbia bombaiensis Santapau – not accepted   Euphorbia bombensis Jacq. – accepted – Dixie sandmat   Euphorbia bonae Mutel – not accepted   Euphorbia bongensis Kotschy & Peyr. ex Boiss. – accepted   Euphorbia bongolavensis Rauh – accepted   Euphorbia bonifaciensis Req. ex Gren. & Godr. – not accepted   Euphorbia bonplandii Sweet – not accepted   Euphorbia boophthona C.A. Gardner – accepted   Euphorbia borbonica Boiss. – accepted   Euphorbia borealis Baikov – accepted   Euphorbia borenensis M.G. Gilbert – accepted   Euphorbia borodinii Sambuk – accepted   Euphorbia borszczowii Prokh. – not accepted   Euphorbia bosseri Leandri – accepted   Euphorbia bothriosperma Boiss. & Kotschy – not accepted   Euphorbia botryoides Noronha – not accepted   Euphorbia bottae Boiss. – not accepted   Euphorbia bougheyi L.C. Leach – accepted   Euphorbia bouleyi S. Moore – not accepted   Euphorbia bounophila Boiss. – not accepted   Euphorbia bounophila var. aucheri (Boiss.) Boiss. – not accepted   Euphorbia bourgaeana J. Gay ex Boiss. – accepted   Euphorbia bracei Millsp. – not accepted   Euphorbia brachiata (E. Mey. ex Klotzsch & Garcke) Boiss. – accepted   Euphorbia brachiata Jan – not accepted   Euphorbia brachycera Engelm. – accepted – horned spurge, shorthorn spurge   Euphorbia brachycera f. dichotoma (Daniels) Oudejans – not accepted   Euphorbia brachycera var. greggii (Engelm. ex Boiss.) M.C. Johnst. – not accepted   Euphorbia brachycera var. robusta (Engelm.) Dorn – not accepted   Euphorbia brachyphylla Denis – accepted   Euphorbia bracteata Jacq. – accepted   Euphorbia bracteolaris Boiss. – accepted   Euphorbia brakdamensis N.E. Br. – accepted   Euphorbia brandegeei Millsp. – accepted   Euphorbia brasiliensis Lam. – not accepted   Euphorbia brasiliensis f. angustior Chodat & Hassl. – not accepted   Euphorbia brasiliensis f. latior Chodat & Hassl. – not accepted   Euphorbia brasiliensis f. major Chodat & Hassl. – not accepted   Euphorbia brasiliensis f. pruinosa Chodat – not accepted   Euphorbia brasiliensis f. subsessilis Chodat & Hassl. – not accepted   Euphorbia brasiliensis var. blanchetii (Miq. ex Boiss.) Boiss. – not accepted   Euphorbia brasiliensis var. genuina Chodat & Hassl. – not accepted   Euphorbia brasiliensis var. hyssopifolia (L.) Boiss. – not accepted   Euphorbia brasiliensis var. lorentzii (Müll. Arg.) Griseb. – not accepted   Euphorbia brasiliensis var. paraguayensis Chodat – not accepted   Euphorbia brasiliensis var. pruinosa (Chodat) Chodat & Hassl. – not accepted   Euphorbia brasiliensis var. pulchella (Kunth) Boiss. – not accepted   Euphorbia brasiliensis var. uniflora Chodat & Hassl. – not accepted   Euphorbia brassii P.I. Forst. – accepted   Euphorbia braunsii N.E. Br. – accepted   Euphorbia bravoana Svent. – accepted   Euphorbia breonii Nois. – not accepted   Euphorbia breviarticulata Pax – accepted   Euphorbia breviarticulata var. breviarticulata Pax – accepted   Euphorbia breviarticulata var. trunciformis S. Carter – accepted   Euphorbia brevicornu Pax – accepted   Euphorbia brevirama N.E. Br. – accepted   Euphorbia brevirama var. astrophora (Marx) Marx & van Veldh. – accepted   Euphorbia brevirama var. brevirama N.E. Br. – accepted   Euphorbia brevirama var. supraterra Marx & van Veldh. – accepted   Euphorbia brevis N.E. Br. – accepted   Euphorbia brevitorta P.R.O. Bally – accepted   Euphorbia bridgesii (Klotzsch & Garcke) Bertol. ex Boiss. – not accepted   Euphorbia briquetii Emb. & Maire – accepted   Euphorbia brittingeri Opiz ex Samp. – not accepted   Euphorbia brittingeri ssp. flavicoma (DC.) Ladero – not accepted   Euphorbia brittonii Millsp. – not accepted   Euphorbia brochonii Deysson – not accepted   Euphorbia broteroi Daveau – not accepted   Euphorbia broussonetii Willd. ex Link – not accepted   Euphorbia brunellii Chiov. – accepted   Euphorbia bruntii (Proctor) Oudejans – accepted   Euphorbia bruynsii L.C. Leach – accepted   Euphorbia bryophylla Donn. Sm. – not accepted   Euphorbia bubalina Boiss. – accepted   Euphorbia buchananii Pax – not accepted   Euphorbia buchtormensis Ledeb. – accepted   Euphorbia buhsei Boiss. – accepted   Euphorbia buhsei var. lasiostemon Boiss. – not accepted   Euphorbia bulbispina Rauh & Razaf. – accepted   Euphorbia bulleyana Diels – not accepted   Euphorbia bungei Boiss. – accepted   Euphorbia bupleurifolia Jacq. – accepted   Euphorbia bupleurifolia E. Mey. – not accepted   Euphorbia bupleuroides Desf. – accepted   Euphorbia bupleuroides Diels – not accepted   Euphorbia bupleuroides Willd. ex Boiss. – not accepted   Euphorbia bupleuroides Willd. ex Ledeb. – not accepted   Euphorbia bupleuroides ssp. luteola (Kralik) Maire – not accepted   Euphorbia burchellii Müll. Arg. – accepted   Euphorbia burgeri M.G. Gilbert – accepted   Euphorbia burkhartii Bacigalupo – accepted   Euphorbia burmanica Hook. f. – accepted   Euphorbia burmanniana J. Gay – not accepted   Euphorbia burmannii (Klotzsch & Garcke) E. Mey. ex Boiss. – accepted   Euphorbia burmannii var. karroensis Boiss. – not accepted   Euphorbia buruana Pax – accepted   Euphorbia buschiana Grossh. – accepted   Euphorbia bussei Pax – accepted   Euphorbia bussei var. bussei Pax – accepted   Euphorbia bussei var. kibwezensis (N.E. Br.) S. Carter – accepted   Euphorbia buxifolia Lam. – not accepted   Euphorbia buxifolia f. florida Millsp. – not accepted   Euphorbia buxifolia f. reclinata Millsp. – not accepted   Euphorbia buxifolia f. seminuda Millsp. – not accepted   Euphorbia buxifolia var. flexuosa (Kunth) Boiss. – not accepted   Euphorbia buxifolia var. ramosissima Millsp. – not accepted   Euphorbia buxoides Radcl.-Sm. – accepted   Euphorbia bwambensis S. Carter – accepted   Euphorbia cactus Ehrenb. ex Boiss. – accepted   Euphorbia cactus var. tortirama Rauh & Lavranos – not accepted   Euphorbia cadrilateri Prodán – not accepted   Euphorbia caducifolia Haines – accepted   Euphorbia caecorum Mart. ex Boiss. – not accepted   Euphorbia caeladenia Boiss. – accepted   Euphorbia caerulescens Haw. – accepted   Euphorbia caesaraugustana Willk. & Lange – not accepted   Euphorbia caesia Kar. & Kir. – accepted   Euphorbia caespitosa Lam. – accepted   Euphorbia caespitosa Ten. – not accepted   Euphorbia caespitosa ssp. typica Croizat – not accepted   Euphorbia caespitosa ssp. ventanicola Croizat – not accepted   Euphorbia caespitosa var. angustifolia Hauman – not accepted   Euphorbia caespitosa var. ventanicola (Croizat) Subils – not accepted   Euphorbia caiogala Ehrh. – not accepted   Euphorbia calabarica Burkill – not accepted   Euphorbia calabrica Huter, Porta & Rigo – not accepted   Euphorbia calamiformis P.R.O. Bally & S. Carter – accepted   Euphorbia calcarata (Schltdl.) V.W. Steinm. – accepted   Euphorbia calcarea Coss. & Durieu ex Coss. – not accepted   Euphorbia calcicola Fernald – accepted   Euphorbia calderensis Phil. – not accepted   Euphorbia calderoniae V.W. Steinm. – accepted   Euphorbia calendulifolia Delile – not accepted   Euphorbia californica Benth. – accepted   Euphorbia californica var. californica Benth. – not accepted   Euphorbia californica var. hindsiana (Benth.) Wiggins – not accepted   Euphorbia calliadena Engelm. ex Boiss. – not accepted   Euphorbia callitrichoides Kunth – not accepted   Euphorbia callitrichoides S. Schauer – not accepted   Euphorbia caloderma S. Carter – accepted   Euphorbia calonesiaca Croizat – not accepted   Euphorbia calva N.E. Br. – not accepted   Euphorbia calyciflora Sessé & Moç. – not accepted   Euphorbia calycina N.E. Br. – not accepted   Euphorbia calyculata Kunth – accepted – Chupire, Tencuante   Euphorbia calyptrata Coss. & Durieu – accepted   Euphorbia calyptrata var. involucrata Batt. – not accepted   Euphorbia camagueyensis (Millsp.) Urb. – accepted   Euphorbia cameronii N.E. Br. – accepted   Euphorbia campestris S. Geuns – not accepted   Euphorbia campestris var. esuliformis (S. Schauer ex Nees & S. Schauer) Boiss. – not accepted   Euphorbia campestris var. foliosa Millsp. – not accepted   Euphorbia campestris var. seemannii (Klotzsch) Boiss. – not accepted   Euphorbia campestris var. subpuberula Greenm. – not accepted   Euphorbia canaliculata Lam. – not accepted   Euphorbia canaliculata Pers. – not accepted   Euphorbia canaliculata Lodd. – not accepted   Euphorbia canariensis L. – accepted   Euphorbia canariensis f. viridis G. Kunkel – not accepted   Euphorbia canariensis var. spiralis Bolle ex Boiss. – not accepted   Euphorbia candelabrum Trémaux ex Kotschy – accepted   Euphorbia candelabrum Welw. ex Hiern – not accepted   Euphorbia candelabrum var. bilocularis (N.E. Br.) S. Carter – accepted   Euphorbia candelabrum var. candelabrum Trémaux ex Kotschy – accepted   Euphorbia canescens L. – not accepted   Euphorbia cannellii L.C. Leach – accepted   Euphorbia cantabrica Rouy – not accepted   Euphorbia canuti Parl. – not accepted   Euphorbia cap-saintemariensis Rauh – not accepted   Euphorbia capansa Ducke – not accepted   Euphorbia capazii Caball. – not accepted   Euphorbia caperata McVaugh – accepted   Euphorbia caperonioides R.A. Dyer & P.G. Mey. – accepted   Euphorbia capillaris Gagnep. – accepted   Euphorbia capitata Lam. – not accepted   Euphorbia capitellata Engelm. – accepted – head sandmat, capitate sandmat, head spurge   Euphorbia capitellata var. laxiflora S. Watson – not accepted   Euphorbia capitellata var. typica L.C. Wheeler – not accepted   Euphorbia capitulata Rchb. – accepted   Euphorbia capmanambatoensis Rauh – accepted   Euphorbia capsaintemariensis Rauh – accepted   Euphorbia capsaintemariensis var. tulearensis Rauh – not accepted   Euphorbia captiosa N.E. Br. – not accepted   Euphorbia capuronii Ursch & Leandri – accepted   Euphorbia capuronii Leandri – not accepted   Euphorbia caput-aureum Denis – accepted   Euphorbia caput-medusae L. – accepted   Euphorbia caput-medusae var. geminata Aiton – not accepted   Euphorbia caput-medusae var. major Aiton – not accepted   Euphorbia caracasana (Klotzsch & Garcke) Boiss. – not accepted   Euphorbia cardiophylla Boiss. & Heldr. – not accepted   Euphorbia careyi F. Muell. – not accepted   Euphorbia carinata Donn – not accepted   Euphorbia carinifolia N.E. Br. – accepted   Euphorbia carinthiaca Traunf. ex Boiss. – not accepted   Euphorbia carinulata P.R.O. Bally & S. Carter – accepted   Euphorbia carissoides F.M. Bailey – accepted   Euphorbia carmenensis Rose – not accepted   Euphorbia carniolica Jacq. – accepted   Euphorbia carniolica Scop. ex Brot. – not accepted   Euphorbia carniolica Lapeyr. – not accepted   Euphorbia carniolica DC. – not accepted   Euphorbia carniolica f. expansa (Janka) Prodán – not accepted   Euphorbia carniolica ssp. expansa (Janka) Nyman – not accepted   Euphorbia carniolica var. ambigua (Waldst. & Kit. ex Willd.) Nyman – not accepted   Euphorbia carnosa Paulsen – not accepted   Euphorbia carpasus Ehrenb. ex Boiss. – not accepted   Euphorbia carpatica Wol. – accepted   Euphorbia cartaginiensis Porta & Rigo – not accepted   Euphorbia carteriana P.R.O. Bally – accepted   Euphorbia carullae Sennen – not accepted   Euphorbia carunculata Waterf. – accepted – sanddune sandmat, sand-dune spurge   Euphorbia carunculifera L.C. Leach – accepted   Euphorbia carunculifera ssp. subfastigiata L.C. Leach – not accepted   Euphorbia cashmeriana Royle – accepted   Euphorbia cassia Boiss. – accepted   Euphorbia cassia ssp. cassia Boiss. – accepted   Euphorbia cassia ssp. rigoi (Boiss. ex Freyn) Holmboe – accepted   Euphorbia cassioides C. Presl – not accepted   Euphorbia cassythoides Boiss. – accepted   Euphorbia castillonii Lavranos – not accepted   Euphorbia catamarcensis (Croizat) Subils – accepted   Euphorbia cataractarum S. Carter – accepted   Euphorbia catenata (S. Carter) Bruyns – accepted   Euphorbia caterviflora N.E. Br. – accepted   Euphorbia cattimandoo Elliot ex Wight – accepted   Euphorbia caucasica Dubovik – not accepted   Euphorbia caudata Boiss. & Hausskn. – not accepted   Euphorbia caudiculosa Boiss. – accepted   Euphorbia caunculata Waterf. – not accepted   Euphorbia cavaleriei H. Lév. & Vaniot – not accepted   Euphorbia cayensis Millsp. – accepted   Euphorbia cebrina Hochst. ex Klotzsch & Garcke – not accepted   Euphorbia cechica Opiz – not accepted   Euphorbia cedrorum Rauh & Hebding – accepted   Euphorbia celastroides Boiss. – accepted – `ekoko   Euphorbia celastroides var. amplectens Sherff – not accepted – `ekoko   Euphorbia celastroides var. arenisaxosa H. St. John – not accepted   Euphorbia celastroides var. celastroides Boiss. – not accepted – `ekoko   Euphorbia celastroides var. halawana Sherff – not accepted   Euphorbia celastroides var. hanapepensis Sherff – not accepted – `ekoko   Euphorbia celastroides var. haupuana Sherff – not accepted   Euphorbia celastroides var. humbertii Sherff – not accepted   Euphorbia celastroides var. ingrata O. Deg. & Sherff – not accepted   Euphorbia celastroides var. kaenana Sherff – not accepted – `ekoko   Euphorbia celastroides var. kealiana Sherff – not accepted   Euphorbia celastroides var. kohalana Sherff – not accepted   Euphorbia celastroides var. laehiensis O. Deg., I. Deg. & Sherff – not accepted – `ekoko   Euphorbia celastroides var. limahuliensis H. St. John – not accepted   Euphorbia celastroides var. lorifolia (A. Gray ex H. Mann) Sherff – not accepted – `ekoko   Euphorbia celastroides var. mauiensis Sherff – not accepted   Euphorbia celastroides var. moomomiana Sherff – not accepted   Euphorbia celastroides var. nelsonii H. St. John – not accepted   Euphorbia celastroides var. nematopoda Sherff – not accepted   Euphorbia celastroides var. niuensis Sherff – not accepted   Euphorbia celastroides var. odonatoides O. Deg. & Sherff – not accepted   Euphorbia celastroides var. pseudoniuensis O. Deg. & Sherff – not accepted   Euphorbia celastroides var. saxicola O. Deg. & Sherff ex Sherff – not accepted   Euphorbia celastroides var. stokesii (C.N. Forbes) Sherff – not accepted – `ekoko   Euphorbia celastroides var. tomentella (Boiss.) Oudejans – not accepted – `ekoko   Euphorbia celastroides var. typica Sherff – not accepted   Euphorbia celastroides var. waikoluensis Sherff – not accepted   Euphorbia celata R.A. Dyer – accepted   Euphorbia celerieri (Emb.) Emb. ex Vindt – accepted   Euphorbia centralis B.G. Thomson – accepted   Euphorbia centunculoides Kunth – accepted   Euphorbia ceratocarpa Ten. – accepted   Euphorbia cerebrina Hochst. ex Boiss. – not accepted   Euphorbia cereiformis L. – accepted   Euphorbia cereiformis var. echinata Salm-Dyck ex Boiss. – not accepted   Euphorbia cereiformis var. submamillaris A. Berger – not accepted   Euphorbia cerifera Alcocer – not accepted   Euphorbia cerinthifolia Fisch. ex Boiss. – not accepted   Euphorbia cernua Coss. & Durieu ex Boiss. – not accepted   Euphorbia ceroderma I.M. Johnst. – accepted   Euphorbia cerralvensis Maya-Lastra & V.W. Steinm. – accepted   Euphorbia cervicornis Boiss. – not accepted   Euphorbia cervicornu Baill. – accepted   Euphorbia cestrifolia Kunth – accepted   Euphorbia chaborasia Gomb. – accepted   Euphorbia chaculana Donn. Sm. – not accepted   Euphorbia chaetocalyx (Boiss.) Tidestr. – accepted – bristlecup sandmat   Euphorbia chaetocalyx var. chaetocalyx (Boiss.) Tidestr. – accepted – bristlecup sandmat   Euphorbia chaetocalyx var. triligulata (L.C. Wheeler) M.C. Johnst. – accepted – bristlecup sandmat, Triligulate bristlecup sandmat   Euphorbia chaixiana Timb.-Lagr. – not accepted   Euphorbia chalicophila Weath. – not accepted   Euphorbia chamaebuxus Bernard ex Gren. & Godr. – not accepted   Euphorbia chamaecaula Weath. – not accepted   Euphorbia chamaeclada Ule – accepted   Euphorbia chamaecormos Chiov. – not accepted   Euphorbia chamaepeploides Lotsy – not accepted   Euphorbia chamaepeplus Boiss. & Gaill. – accepted   Euphorbia chamaepeplus var. angustifolia Danin – not accepted   Euphorbia chamaepeplus var. sinaica Boiss. – not accepted   Euphorbia chamaerrhodos Boiss. – accepted   Euphorbia chamaerrhodos var. hirsuta Chodat & Hassl. – not accepted   Euphorbia chamaesula Boiss. – accepted – mountain spurge   Euphorbia chamaesula var. subdentata (Engelm.) Norton – not accepted   Euphorbia chamaesyce auct. non L. – not accepted   Euphorbia chamaesyce L. – accepted   Euphorbia chamaesyce var. canescens (L.) Boiss. – not accepted   Euphorbia chamaesyce var. glabra Roep. – not accepted   Euphorbia chamaesyce var. glabra C.A. Mey. – not accepted   Euphorbia chamaesyce var. glabriuscula Lange – not accepted   Euphorbia chamaesyce var. massiliensis (DC.) Thell. – not accepted   Euphorbia chamaesyce var. pilosa Roep. – not accepted   Euphorbia chamaesyce var. pilosa C.A. Mey. – not accepted   Euphorbia chamaesycoides B. Nord. – accepted   Euphorbia chamberlinii I.M. Johnst. – accepted   Euphorbia chamissonis (Klotzsch & Garcke) Boiss. – accepted   Euphorbia chankoana Vorosch. – not accepted   Euphorbia chapmanii Oudejans – not accepted – Chapman's spurge   Euphorbia characias L. – accepted – Albanian spurge   Euphorbia characias ssp. characias L. – accepted   Euphorbia characias ssp. veneta (Willd.) Litard. – not accepted   Euphorbia characias ssp. wulfenii (Hoppe ex W. Koch) Radcl.-Sm. – accepted   Euphorbia characias var. eriocarpa (Bertol.) Nyman – not accepted   Euphorbia characias var. lusitanica O. Bolòs – not accepted   Euphorbia charleswilsoniana V. Vlk – accepted   Euphorbia chasmophila Rech. f. & Aellen – not accepted   Euphorbia cheiradenia Boiss. & Hohen. – accepted   Euphorbia cheirolepis Fisch. & C.A. Mey. ex Ledeb. – accepted   Euphorbia cheirolepis var. heterophylla Boiss. – not accepted   Euphorbia chenopodiifolia Boiss. – accepted   Euphorbia chersina N.E. Br. – accepted   Euphorbia chersonesa Huft – accepted   Euphorbia chesneyi (Klotzsch & Garcke) Boiss. – not accepted   Euphorbia chevalieri (N.E. Br.) Bruyns – accepted   Euphorbia chiapensis Brandegee – not accepted   Euphorbia chilensis Gay – not accepted   Euphorbia chimaera Lipsky – not accepted   Euphorbia chiogenes (Small) Oudejans – not accepted   Euphorbia chiogenoides Rusby – not accepted   Euphorbia chiribensis V.W. Steinm. & Felger – accepted   Euphorbia chrysochaeta W. Fitzg. – not accepted   Euphorbia chrysocoma H. Lév. & Vaniot – not accepted   Euphorbia chrysocoma var. glaucophylla H. Lév. & Vaniot – not accepted   Euphorbia chrysophylla (Klotzsch & Garcke) Klotzsch ex Boiss. – not accepted   Euphorbia cibdela N.E. Br. – accepted   Euphorbia cilicica Boiss. – not accepted   Euphorbia ciliolata Pax – not accepted   Euphorbia cinerascens Engelm. – accepted – ashy sandmat   Euphorbia cinerascens var. appendiculata Engelm. – not accepted   Euphorbia cinerea W. Fitzg. – not accepted   Euphorbia cirsioides Costantin & Gallaud – not accepted   Euphorbia citrina S. Carter – accepted   Euphorbia clandestina Jacq. – accepted   Euphorbia clarae (Malaisse & Lecron) Bruyns – accepted   Euphorbia clarionensis Brandegee – not accepted   Euphorbia clarkeana Hook. f. – accepted   Euphorbia classenii P.R.O. Bally & S. Carter – accepted   Euphorbia clava Jacq. – accepted   Euphorbia clavarioides Boiss. – accepted   Euphorbia clavarioides var. truncata (N.E. Br.) A.C. White, R.A. Dyer & B. Sloane – not accepted   Euphorbia clavata Salisb. – not accepted   Euphorbia clavidigitata Gage – accepted   Euphorbia clavigera N.E. Br. – accepted   Euphorbia clavigera Lacaita – not accepted   Euphorbia claytonioides Pax – accepted   Euphorbia clementei Boiss. – accepted   Euphorbia clementei Bourg. ex Boiss. – not accepted   Euphorbia clementei f. hozmariensis Pau – not accepted   Euphorbia clementei f. maroccana (Maire) Vindt – not accepted   Euphorbia clementei ssp. clementei Boiss. – accepted   Euphorbia clementei ssp. faurei (Maire) Vicens, Molero & C. Blanché – accepted   Euphorbia clementei ssp. villosa (Faure & Maire) Vicens, Molero & C. Blanché – accepted   Euphorbia clementei var. angustifolia Lange – not accepted   Euphorbia clementei var. euclementei Maire – not accepted   Euphorbia clementei var. maroccana Maire – not accepted   Euphorbia clementei var. puberula (Emb.) Maire – not accepted   Euphorbia clementei var. villifolia Maire – not accepted   Euphorbia clementii Domin – not accepted   Euphorbia cleopatra Baill. – not accepted   Euphorbia clivicola R.A. Dyer – accepted   Euphorbia clusiifolia Hook. & Arn. – accepted – forest sandmat   Euphorbia clusiifolia var. grandiflora Hillebr. – not accepted   Euphorbia clutioides (G. Forst.) C.A. Gardner – not accepted   Euphorbia coalcomanensis (Croizat) V.W. Steinm. – accepted   Euphorbia coccinea B. Heyne ex Roth – accepted   Euphorbia coccinea Willd. ex Boiss. – not accepted   Euphorbia coderiana DC. – not accepted   Euphorbia coerulans Pax – accepted   Euphorbia cofradiana Brandegee – not accepted   Euphorbia coghlanii F.M. Bailey – accepted   Euphorbia cognata (Klotzsch) Boiss. – not accepted   Euphorbia colchica (Litv.) Geltman – not accepted   Euphorbia colimae Rose – not accepted   Euphorbia collenetteae D. Al-Zahrani & El-Karemy – accepted – Marar, Saab, Scharath   Euphorbia colletioides Benth. – accepted   Euphorbia colliculina A.C. White, R.A. Dyer & B. Sloane – accepted   Euphorbia colligata V.W. Steinm. – accepted   Euphorbia collina Phil. – not accepted   Euphorbia collina Willd. ex Ledeb. – not accepted   Euphorbia collina Brandegee – not accepted   Euphorbia collina var. andina (Phil.) Subils – not accepted   Euphorbia collina var. chrysophylla (Klotzsch & Garcke) Subils – not accepted   Euphorbia collina var. glaucescens (Chodat & Wilczek) Subils – not accepted   Euphorbia collina var. minor (Hicken) Subils – not accepted   Euphorbia collina var. nahuelhuapina (Croizat) Subils – not accepted   Euphorbia collina var. patagonica (Hieron.) Subils – not accepted   Euphorbia collina var. spathulata (Chodat & Wilczek) Subils – not accepted   Euphorbia colorata Engelm. – accepted   Euphorbia colubrina P.R.O. Bally & S. Carter – accepted   Euphorbia columnaris P.R.O. Bally – accepted   Euphorbia comans W. Fitzg. – not accepted   Euphorbia commelinii DC. – not accepted   Euphorbia commiphoroides Dinter – not accepted   Euphorbia commutata Engelm. ex A. Gray – accepted – tinted woodland spurge, tinted euphorbia   Euphorbia commutata var. erecta Norton – not accepted   Euphorbia comonduana Millsp. – not accepted   Euphorbia comosa Vell. – accepted   Euphorbia complanata Warb. – accepted   Euphorbia complexa R.A. Dyer – accepted   Euphorbia compressa Boiss. – accepted   Euphorbia concanensis Janarth. & S.R. Yadav – accepted   Euphorbia conceptionis Rupr. ex Boiss. – not accepted   Euphorbia condensata Fisch. ex M. Bieb. – not accepted   Euphorbia condylocarpa M. Bieb. – accepted   Euphorbia conferta (Small) Oudejans – not accepted – Everglade Key sandmat   Euphorbia conferta (Small) B.E. Sm. – accepted – Everglade Key sandmat   Euphorbia confertiflora Volkens – not accepted   Euphorbia confinalis R.A. Dyer – accepted   Euphorbia confinalis ssp. confinalis R.A. Dyer – accepted   Euphorbia confinalis ssp. rhodesica L.C. Leach – accepted   Euphorbia conformis N.E. Br. – not accepted   Euphorbia confusa Blume ex Boiss. – not accepted   Euphorbia congenera Blume – not accepted   Euphorbia congesta Willd. – not accepted   Euphorbia congestiflora L.C. Leach – accepted   Euphorbia conifera Steph. ex Boiss. – not accepted   Euphorbia coniosperma Boiss. & Buhse – accepted   Euphorbia conjuncta Millsp. – not accepted   Euphorbia connata Boiss. – accepted   Euphorbia consanguinea Schrenk – accepted   Euphorbia consanguinea Klotzsch – not accepted   Euphorbia consanguinea Engelm. ex Boiss. – not accepted   Euphorbia consobrina N.E. Br. – not accepted   Euphorbia consoquitlae Brandegee – not accepted   Euphorbia conspicua N.E. Br. – accepted   Euphorbia contorta L.C. Leach – accepted   Euphorbia controversa N.E. Br. – not accepted   Euphorbia convolvuloides Hochst. ex Benth. – accepted   Euphorbia conzattii V.W. Steinm. – accepted   Euphorbia cooperi N.E. Br. ex A. Berger – accepted – candelabra tree   Euphorbia cooperi var. calidicola L.C. Leach – accepted   Euphorbia cooperi var. cooperi N.E. Br. ex A. Berger – accepted   Euphorbia cooperi var. ussanguensis (N.E. Br.) L.C. Leach – accepted   Euphorbia copiapina Phil. – accepted   Euphorbia corallifera M.E. Jones – not accepted   Euphorbia corallioides L. – accepted   Euphorbia corallioides var. denudata Boiss. – not accepted   Euphorbia corallothamnus Dinter – not accepted   Euphorbia cordata Meyen – not accepted   Euphorbia cordata Schrank – not accepted   Euphorbia cordata Larrañaga – not accepted   Euphorbia cordatella Oudejans – accepted   Euphorbia cordeiroae P. Carrillo & V.W. Steinm. – accepted   Euphorbia cordellata Haw. – not accepted   Euphorbia cordifolia Elliott – accepted – heartleaf sandmat   Euphorbia cordifolia C.A. Mey. ex Boiss. – not accepted   Euphorbia coriacea K. Koch – not accepted   Euphorbia coriariifolia Boiss. – not accepted   Euphorbia corifolia Lam. – not accepted   Euphorbia cornastra (Dressler) Radcl.-Sm. – accepted   Euphorbia corniculata R.A. Dyer – accepted   Euphorbia cornigera Boiss. – accepted   Euphorbia cornigera var. cognata (Klotzsch & Garcke) Binojk. & N.P. Balakr. – accepted   Euphorbia cornigera var. cornigera Boiss. – accepted   Euphorbia cornuta Pers. – not accepted   Euphorbia corollata L. – accepted – floweringspurge euphorbia, flowering spurge   Euphorbia corollata var. angustifolia Elliott – not accepted   Euphorbia corollata var. apocynifolia (Small) Millsp. – not accepted   Euphorbia corollata var. glauca Millsp. – not accepted   Euphorbia corollata var. grandiflora Boiss. – not accepted   Euphorbia corollata var. hirsuta Macnab – not accepted   Euphorbia corollata var. joorii Norton – not accepted   Euphorbia corollata var. molle Millsp. – not accepted   Euphorbia corollata var. mollis Millsp. – not accepted   Euphorbia corollata var. paniculata Boiss. – not accepted   Euphorbia corollata var. subpetiolata Boiss. – not accepted   Euphorbia corollata var. viridiflora Farw. – not accepted   Euphorbia corollata var. zinniiflora (Small) H.E. Ahles – not accepted   Euphorbia coronata Thunb. – not accepted   Euphorbia correllii M.C. Johnst. – accepted   Euphorbia correntina Parodi – accepted   Euphorbia corrigioloides Boiss. – accepted   Euphorbia corsica Req. – accepted   Euphorbia corymbosa N.E. Br. – accepted   Euphorbia corynoclada F. Muell. – not accepted   Euphorbia coscinosperma Rchb. – not accepted   Euphorbia cossoniana Boiss. – accepted   Euphorbia cossoniana var. maroccana Batt. – not accepted   Euphorbia costata Schur – not accepted   Euphorbia costeana (Rouy) P. Fourn. – not accepted   Euphorbia cotinifolia L. – accepted – Mexican shrubby spurge   Euphorbia cotinifolia ssp. cotinoides (Miq.) Christenh. – not accepted   Euphorbia cotinoides Miq. – not accepted   Euphorbia cotinoides var. riedeliana (Klotzsch & Garcke) Müll. Arg. – not accepted   Euphorbia cotinoides var. verrucosa Boiss. – not accepted   Euphorbia coudercii f. glaberrima Gagnep. – not accepted   Euphorbia cowellii (Millsp. ex Britton) Oudejans – accepted – Cowell's sandmat   Euphorbia cozumelensis Millsp. – accepted   Euphorbia cozumelensis var. pilosulca Millsp. – not accepted   Euphorbia craspedia Boiss. – accepted   Euphorbia crassinodis Urb. – accepted   Euphorbia crassipes Marloth – accepted   Euphorbia creberrima McVaugh – accepted   Euphorbia crebrifolia S. Carter – accepted   Euphorbia cremersii Rauh & Razaf. – accepted   Euphorbia cremersii f. viridifolia Rauh – accepted   Euphorbia cremersii var. cremersii Rauh & Razaf. – accepted   Euphorbia cremersii var. rakatozafyi (Cremers) Rauh – accepted   Euphorbia crenata (N.E. Br.) Bruyns – accepted   Euphorbia crenulata Engelm. – accepted – Chinese caps, Chinesecaps   Euphorbia crenulata var. franciscana Norton – not accepted   Euphorbia crepitata L.C. Wheeler – accepted   Euphorbia crepitata var. crepitata L.C. Wheeler – accepted   Euphorbia crepitata var. longa M.C. Johnst. – accepted   Euphorbia crepuscula (L.C. Wheeler) V.W. Steinm. & Felger – accepted   Euphorbia cressoides M.C. Johnst. – accepted   Euphorbia cretica Mill. – not accepted   Euphorbia cretophila Klokov – not accepted   Euphorbia crispa (Haw.) Sweet – not accepted   Euphorbia crispata Willd. ex Hornem. – not accepted   Euphorbia crispata Lem. – not accepted   Euphorbia cristata B. Heyne ex Roth – accepted   Euphorbia cristata D. Dietr. – not accepted   Euphorbia croizatii Leandri – accepted   Euphorbia croizatii (Hurus.) Kitag. – not accepted   Euphorbia crossadenia Pax & K. Hoffm. – accepted   Euphorbia crotonoides Boiss. – accepted   Euphorbia crotonoides ssp. crotonoides Boiss. – accepted   Euphorbia crotonoides ssp. narokensis S. Carter – accepted   Euphorbia cruentata Graham – not accepted   Euphorbia crypta Ewest – accepted   Euphorbia cryptocaulis M.G. Gilbert – accepted   Euphorbia cryptorubra N.C. Taylor & M. Terry – accepted   Euphorbia cryptospinosa P.R.O. Bally – accepted   Euphorbia cuatrecasasii Pau – not accepted   Euphorbia cubensis Boiss. – accepted   Euphorbia cuchumatanensis Standl. & Steyerm. – not accepted   Euphorbia culminicola Ant. Molina – not accepted   Euphorbia cumbrae Boiss. – accepted   Euphorbia cumulata R.A. Dyer – accepted   Euphorbia cumulicola (Small) Oudejans – accepted – coastal dune sandmat   Euphorbia cuneata Vahl – accepted   Euphorbia cuneata ssp. cretacea S. Carter – accepted   Euphorbia cuneata ssp. cuneata Vahl – accepted   Euphorbia cuneata ssp. lamproderma S. Carter – accepted   Euphorbia cuneata ssp. spinescens (Pax) S. Carter – accepted   Euphorbia cuneata ssp. wajirensis S. Carter – accepted   Euphorbia cuneata var. carpasus Boiss. – not accepted   Euphorbia cuneata var. perrottetii (Jaub. & Spach) Boiss. – not accepted   Euphorbia cuneata var. pumilans S. Carter – accepted   Euphorbia cuneata var. spinescens (Pax) S. Carter – accepted   Euphorbia cuneifolia Guss. – accepted   Euphorbia cuneifolia Roxb. – not accepted   Euphorbia cuneneana L.C. Leach – accepted   Euphorbia cuneneana ssp. cuneneana L.C. Leach – accepted   Euphorbia cuneneana ssp. rhizomatosa L.C. Leach – accepted   Euphorbia cupanii Guss. ex Bertol. – not accepted   Euphorbia cupanii A. Schultz ex Gren. & Godr. – not accepted   Euphorbia cupanii var. spartioides (Jacq.) Boiss. – not accepted   Euphorbia cuphosperma (Engelm.) Boiss. – accepted – hairy-fruit spurge, Hairy-fruited Spurge   Euphorbia cupricola (Malaisse & Lecron) Bruyns – accepted   Euphorbia cuprispina S. Carter – accepted   Euphorbia cupularis Boiss. – accepted   Euphorbia curocana L.C. Leach – not accepted   Euphorbia currorii N.E. Br. – not accepted   Euphorbia curtifolia Chaub. – not accepted   Euphorbia curtisii Engelm. – accepted – Curtis' spurge, sandhills spurge   Euphorbia curtisii var. longipes Boiss. – not accepted   Euphorbia curvirama R.A. Dyer – accepted   Euphorbia cuspidata Bertol. – accepted   Euphorbia cuspidata Bernh. ex Krauss – not accepted   Euphorbia cussonioides P.R.O. Bally – accepted   Euphorbia cyanofolia Ewest – accepted   Euphorbia cyanogala C. Wright ex Griseb. – not accepted   Euphorbia cyanophylla H. Lév. – not accepted   Euphorbia cyathophora Murray – accepted – fire on the mountain, fire-on-the-mountain, painted leaf   Euphorbia cybirensis Boiss. – accepted   Euphorbia cybirensis var. acutifolia Boiss. – not accepted   Euphorbia cybirensis var. dehiscens Boiss. – not accepted   Euphorbia cybirensis var. longifolia Boiss. – not accepted   Euphorbia cybirensis var. microcarpa Boiss. – not accepted   Euphorbia cybirensis var. valerianifolia (Lam.) Nyman – not accepted   Euphorbia cylindrica Marloth ex A.C. White, R.A. Dyer & B. Sloane – accepted   Euphorbia cylindrifolia Marn.-Lap. & Rauh – accepted   Euphorbia cylindrifolia ssp. cylindrifolia Marn.-Lap. & Rauh – accepted   Euphorbia cylindrifolia ssp. tuberifera Rauh – accepted   Euphorbia cymbifera (Schltdl.) V.W. Steinm. – accepted   Euphorbia cymbiformis Rusby – accepted   Euphorbia cymosa Poir. – accepted   Euphorbia cynanchoides Drake – not accepted   Euphorbia cyparissias L. – accepted – cypress spurge, graveyard spurge   Euphorbia cyparissias var. esuloides DC. – not accepted   Euphorbia cyparissias var. major Boiss. – not accepted   Euphorbia cyparissioides Pax – accepted   Euphorbia cyparissioides var. minor N.E. Br. – not accepted   Euphorbia cypria Boiss. – not accepted   Euphorbia cyprianii Maire & Sennen – not accepted   Euphorbia cyri V.W. Steinm. – accepted   Euphorbia cyrtophylla (Prokh.) Prokh. – accepted   Euphorbia czerepanovii Geltman – accepted   Euphorbia daghestanica Geltman – accepted   Euphorbia dahurica Peschkova – accepted   Euphorbia dalettiensis M.G. Gilbert – accepted   Euphorbia dallachyana Baill. – accepted   Euphorbia dalmatica Vis. – not accepted   Euphorbia dalmatica f. isophylla K. Malý – not accepted   Euphorbia damarana L.C. Leach – accepted   Euphorbia damascena Boiss. – not accepted   Euphorbia damasoi Oudejans – accepted   Euphorbia daphnoides Balf. f. – accepted   Euphorbia daphnoides Baill. – not accepted   Euphorbia darbandensis N.E. Br. – accepted   Euphorbia darlingtonii A. Gray – not accepted   Euphorbia darlingtonii var. glabra Boiss. – not accepted   Euphorbia dasyacantha S. Carter – accepted   Euphorbia dasycarpa Coss. ex Batt. & Trab. – not accepted   Euphorbia dasyclada Dusén – not accepted   Euphorbia dauana S. Carter – accepted   Euphorbia davidii Subils – accepted – David's spurge, Toothed Spurge   Euphorbia daviesii E.A. Bruce – accepted   Euphorbia davisii M.S. Khan – accepted   Euphorbia davyi N.E. Br. – accepted   Euphorbia dawei N.E. Br. – accepted   Euphorbia debilispina L.C. Leach – accepted   Euphorbia decariana Croizat – not accepted   Euphorbia decaryi Guillaumin – accepted   Euphorbia decaryi var. ampanihyensis Cremers – accepted   Euphorbia decaryi var. cap-saintemariensis (Rauh) Cremers – not accepted   Euphorbia decaryi var. capsaintemariensis (Rauh) Cremers – not accepted   Euphorbia decaryi var. crassicaulis (Rauh) J.-P. Castillon & J.-B. Castillon – accepted   Euphorbia decaryi var. decaryi Guillaumin – accepted   Euphorbia decaryi var. robinsonii Cremers – accepted   Euphorbia decaryi var. spirosticha Rauh & Buchloh – accepted   Euphorbia deccanensis V.S. Raju – accepted   Euphorbia deccanensis var. deccanensis V.S. Raju – accepted   Euphorbia deccanensis var. nallamalayana (J.L. Ellis) V.S. Raju – accepted   Euphorbia decepta N.E. Br. – accepted   Euphorbia decidua P.R.O. Bally & L.C. Leach – accepted   Euphorbia decliviticola L.C. Leach – accepted   Euphorbia decorsei Drake – accepted   Euphorbia decumbens (Forssk.) Willd. – not accepted   Euphorbia decussata Salisb. – not accepted   Euphorbia decussata E. Mey. ex Boiss. – not accepted   Euphorbia dedzana L.C. Leach – accepted   Euphorbia deflexa Sibth. & Sm. – accepted   Euphorbia deflexa ssp. deflexa Sibth. & Sm. – accepted   Euphorbia deflexa ssp. purpureosuffusa (Rech. f.) Biel & Kit Tan – accepted   Euphorbia deflexa var. purpureosuffusa Rech. f. – not accepted   Euphorbia defoliata Urb. – accepted   Euphorbia degenerata D. Dietr. – not accepted   Euphorbia degeneri Sherff – accepted – beach sandmat   Euphorbia degeneri var. molokaiensis Sherff – not accepted   Euphorbia degeneri var. typica Sherff – not accepted   Euphorbia deightonii Croizat – accepted   Euphorbia dejecta N.E. Br. – not accepted   Euphorbia dekindtii Pax – accepted   Euphorbia delicatissima S. Carter – accepted   Euphorbia delicatula auct. non Boiss. – not accepted   Euphorbia delicatula Boiss. – accepted   Euphorbia delphinensis Ursch & Leandri – accepted   Euphorbia deltobracteata (Prokh.) Prokh. – accepted   Euphorbia deltoidea Engelm. ex Chapm. – accepted – wedge sandmat   Euphorbia deltoidea ssp. adhaerens (Small) Oudejans – accepted – wedge sandmat   Euphorbia deltoidea ssp. deltoidea Engelm. ex Chapm. – accepted – wedge sandmat   Euphorbia deltoidea ssp. pinetorum (Small) Oudejans – accepted – wedge sandmat   Euphorbia deltoidea ssp. serpyllum (Small) Ya Yang – accepted – wedge sandmat   Euphorbia deltoidea var. adhaerens (Small) Oudejans – not accepted   Euphorbia deltoidea var. deltoidea Engelm. ex Chapm. – not accepted   Euphorbia deltoidea var. serpyllum (Small) Oudejans – not accepted   Euphorbia demissa L.C. Leach – accepted   Euphorbia demnatensis Coss. ex Batt. & Trab. – not accepted   Euphorbia dendroides L. – accepted – tree spurge   Euphorbia denisiana Guillaumin – accepted   Euphorbia denisii Oudejans – accepted   Euphorbia densa Schrenk – accepted   Euphorbia densa Schott & Kotschy ex Tchich. – not accepted   Euphorbia densa ssp. badghysi Botsch. – accepted   Euphorbia densa ssp. densa Schrenk – accepted   Euphorbia densiflora (Klotzsch & Garcke) Klotzsch – accepted   Euphorbia densifolia K. Koch – accepted   Euphorbia densispina S. Carter – accepted   Euphorbia densiuscula Popov – accepted   Euphorbia densiusculiformis (Pazij) Botsch. – accepted   Euphorbia dentata Michx. – accepted – toothed spurge, toothedleaf poinsettia, toothed euphorbia   Euphorbia dentata auct. non Michx. – not accepted   Euphorbia dentata f. cuphosperma (Engelm.) Fernald – not accepted   Euphorbia dentata var. cuphosperma Engelm. – not accepted   Euphorbia dentata var. dentata Michx. – not accepted – toothedleaf poinsettia, toothed spurge   Euphorbia dentata var. gracillima Millsp. – not accepted   Euphorbia dentata var. lancifolia Farw. – not accepted   Euphorbia dentata var. lasiocarpa Boiss. – not accepted – toothed spurge, toothedleaf poinsettia   Euphorbia dentata var. linearis Engelm. ex Boiss. – not accepted   Euphorbia dentata var. rigida Engelm. – not accepted   Euphorbia denticulata Lam. – accepted   Euphorbia dentosa I.M. Johnst. – accepted   Euphorbia denudata Bertol. – not accepted   Euphorbia depauperata Hochst. ex A. Rich. – accepted   Euphorbia depauperata ssp. aprica Pax – not accepted   Euphorbia depauperata var. depauperata Hochst. ex A. Rich. – accepted   Euphorbia depauperata var. laevicarpa Friis & Vollesen – accepted   Euphorbia depauperata var. pubescens Pax – accepted   Euphorbia depauperata var. pubiflora N.E. Br. – not accepted   Euphorbia depauperata var. trachycarpa (Pax) S. Carter – accepted   Euphorbia depauperata var. tsetserrensis S. Carter – accepted   Euphorbia deppeana Boiss. – accepted – Oahu sandmat   Euphorbia depressa Torr. ex Spreng. – not accepted   Euphorbia depressa Phil. ex Klotzsch & Garcke – not accepted   Euphorbia derickii V.W. Steinm. – accepted   Euphorbia descampsii (Pax) Bruyns – accepted   Euphorbia deseglisei Boreau ex Boiss. – not accepted   Euphorbia deserticola F. Muell. – not accepted   Euphorbia desertorum Weinm. – not accepted   Euphorbia desmondii Keay & Milne-Redh. – accepted   Euphorbia despoliata (Menezes) Monod – not accepted   Euphorbia dhofarensis S. Carter – accepted   Euphorbia diazlunana (J. Lomelí & Sahagun) V.W. Steinm. – accepted   Euphorbia dichotoma Forssk. – not accepted   Euphorbia dichotoma Roxb. – not accepted   Euphorbia dichroa S. Carter – accepted   Euphorbia dictyosperma Fisch. & C.A. Mey. – not accepted   Euphorbia dictyosperma var. leiococca Engelm. – not accepted   Euphorbia dictyosperma var. mexicana Engelm. – not accepted   Euphorbia dictyosperma var. multicaulis J.M. Coult. – not accepted   Euphorbia didiereoides Denis ex Leandri – accepted   Euphorbia diffusa Jacq. – not accepted   Euphorbia diffusa Hook. f. – not accepted   Euphorbia diffusa Dufour – not accepted   Euphorbia digestiva Rojas – accepted   Euphorbia digitata S. Watson – not accepted   Euphorbia dilatata Hochst. ex A. Rich. – not accepted   Euphorbia dilatata Torr. & A. Gray – not accepted   Euphorbia dilatata E. Mey. – not accepted   Euphorbia dilloniana Haager & Sedivá – accepted   Euphorbia dilobadena S. Carter – accepted   Euphorbia dilunguensis (Malaisse & Lecron) Bruyns – accepted   Euphorbia diminuta S. Carter – accepted   Euphorbia dimorphocaulon P.H. Davis – accepted   Euphorbia dioeca Kunth – accepted   Euphorbia dioeca var. indivisa Engelm. – not accepted   Euphorbia dioica Hieron. – not accepted   Euphorbia dioica f. parvifolia Hieron. – not accepted   Euphorbia dioscoreoides Boiss. – accepted   Euphorbia dioscoreoides ssp. attenuata V.W. Steinm. – accepted   Euphorbia dioscoreoides ssp. dioscoreoides Boiss. – accepted   Euphorbia disclusa N.E. Br. – not accepted   Euphorbia discoidalis Chapm. – accepted – summer spurge   Euphorbia discoidea (P.R.O. Bally) Bruyns – accepted   Euphorbia discolor Ledeb. – accepted   Euphorbia discolor Bertol. – not accepted   Euphorbia discolor Klotzsch ex Boiss. – not accepted   Euphorbia discolor Shuttlew. ex Boiss. – not accepted   Euphorbia discolor (Klotzsch & Garcke) Boiss. – not accepted   Euphorbia discolor ssp. karoi (Freyn) Bassargin – not accepted   Euphorbia discolor var. glabra Loschk. & Polozhij – not accepted   Euphorbia discolor var. pilosa Loschk. & Polozhij – not accepted   Euphorbia discrepans S. Carter – accepted   Euphorbia discreta N.E. Br. – not accepted   Euphorbia dispersa L.C. Leach – accepted   Euphorbia dissimilis Cordem. – not accepted   Euphorbia dissitispina L.C. Leach – accepted   Euphorbia distans W. Fitzg. – not accepted   Euphorbia distincta Schur – not accepted   Euphorbia distincta Stschegl. – not accepted   Euphorbia distinctissima L.C. Leach – accepted   Euphorbia distinguenda Schur – not accepted   Euphorbia divaricata Jacq. – not accepted   Euphorbia divaricata A. Cunn. ex Benth. – not accepted   Euphorbia divergens Klotzsch – not accepted   Euphorbia diversifolia Poir. – not accepted   Euphorbia diversifolia Hochst. ex Boiss. – not accepted   Euphorbia diversifolia Schrad. ex Steud. – not accepted   Euphorbia diversifolia Willd. ex Boiss. – not accepted   Euphorbia djimilensis Boiss. – accepted   Euphorbia djurensis Schweinf. ex Pax – not accepted   Euphorbia dobrogensis Prodán – not accepted   Euphorbia dobrogensis f. latibracteata Prodán – not accepted   Euphorbia dolichoceras S. Carter – accepted   Euphorbia doloensis M.G. Gilbert – accepted   Euphorbia domingensis Spreng. ex Boiss. – not accepted   Euphorbia dominii Röhl. – not accepted   Euphorbia donii Oudejans – accepted   Euphorbia dorsiventralis Urb. – not accepted   Euphorbia dracunculoides Lam. – accepted   Euphorbia dracunculoides ssp. dracunculoides Lam. – accepted   Euphorbia dracunculoides ssp. eudracunculoides Maire – not accepted   Euphorbia dracunculoides ssp. flamandii (Batt.) Maire – accepted   Euphorbia dracunculoides ssp. glebulosa (Coss. & Durieu) Maire – accepted   Euphorbia dracunculoides ssp. hesperia Maire – accepted   Euphorbia dracunculoides ssp. inconspicua (Ball) Maire – accepted   Euphorbia dracunculoides ssp. intermedia (Maire) Maire – accepted   Euphorbia dracunculoides ssp. melillensis Maire – not accepted   Euphorbia dracunculoides ssp. volutiana Maire – accepted   Euphorbia dracunculoides var. africana Rikli & Schröt. – not accepted   Euphorbia dracunculoides var. ballii Maire – not accepted   Euphorbia dracunculoides var. faurei Maire – not accepted   Euphorbia dracunculoides var. pseudoafricana Maire – not accepted   Euphorbia dracunculoides var. taourirtensis (Batt. & Trab.) Batt. – not accepted   Euphorbia drastica Siev. – not accepted   Euphorbia dregeana E. Mey. ex Boiss. – accepted   Euphorbia dressleri V.W. Steinm. – accepted   Euphorbia drummondii Boiss. – accepted   Euphorbia drummondii var. dallachyana Baill. – not accepted   Euphorbia drummondii var. erythropeplis Baill. – not accepted   Euphorbia drummondii var. rubescens Benth. – not accepted   Euphorbia drupifera Thonn. – accepted   Euphorbia dubia Dierb. – not accepted   Euphorbia dubovikii Oudejans – accepted   Euphorbia duckei (Croizat) Oudejans – accepted   Euphorbia duclouxii H. Lév. & Vaniot – not accepted   Euphorbia dugandiana Croizat – accepted   Euphorbia dulcis L. – accepted   Euphorbia dulcis f. lanuginosa (Peterm.) Oudejans – not accepted   Euphorbia dulcis ssp. angulata (Jacq.) Rouy – not accepted   Euphorbia dulcis ssp. incompta (Ces.) Nyman – not accepted   Euphorbia dulcis var. alpigena (A. Kern.) Nyman – not accepted   Euphorbia dulcis var. chloradenia Boiss. – not accepted   Euphorbia dulcis var. incompta (Ces.) Nyman – not accepted   Euphorbia dulcis var. lanuginosa Peterm. – not accepted   Euphorbia dulcis var. viridiflora (Waldst. & Kit.) Nyman – not accepted   Euphorbia dumalis S. Carter – accepted   Euphorbia dumeticola P.R.O. Bally & S. Carter – accepted   Euphorbia dumetorum Coss. & Durieu ex Boiss. – not accepted   Euphorbia dumosa A. Rich. – not accepted   Euphorbia dumosa Boiss. – not accepted   Euphorbia dumosa E. Mey. ex Boiss. – not accepted   Euphorbia dunensis S. Carter – accepted   Euphorbia durandoi Chabert – accepted   Euphorbia duranii Ursch & Leandri – accepted   Euphorbia duranii var. ankaratrae Ursch & Leandri – accepted   Euphorbia duranii var. duranii Ursch & Leandri – accepted   Euphorbia duriuscula Pax & K. Hoffm. ex Herzog – accepted   Euphorbia duseimata R.A. Dyer – accepted   Euphorbia dussii Krug & Urb. ex Duss – accepted   Euphorbia duvalii Lecoq & Lamotte – accepted   Euphorbia duvalii ssp. ruscinonensis (Boiss.) Kerguélen – not accepted   Euphorbia dwyeri D.G. Burch – accepted   Euphorbia eanophylla Croizat – accepted   Euphorbia ebracteolata Hayata – accepted   Euphorbia ebracteolata f. magna Y.N. Lee – not accepted   Euphorbia ebracteolata var. anhweiensis (Hurus.) Oudejans – not accepted   Euphorbia echinata Salm-Dyck – not accepted   Euphorbia echinocarpa Sieber ex Boiss. – not accepted   Euphorbia echinulata (Stapf) Bruyns – accepted   Euphorbia echinus Hook. f. & Coss. – not accepted   Euphorbia ecklonii (Klotzsch & Garcke) Baill. – accepted   Euphorbia ecorniculata Kitam. – accepted   Euphorbia edgeworthii Boiss. – accepted   Euphorbia edmondii Hochr. – accepted   Euphorbia eduardoi L.C. Leach – accepted   Euphorbia edulis Lour. – not accepted   Euphorbia edulis Sessé & Moç. – not accepted   Euphorbia eendornensis Dinter – not accepted   Euphorbia effusa Ehrenb. ex Boiss. – not accepted   Euphorbia eggersii Urb. – accepted   Euphorbia eglandulosa V.W. Steinm. – accepted   Euphorbia ehrenbergii Sweet – not accepted   Euphorbia eichleri Müll. Arg. – accepted   Euphorbia eilensis S. Carter – accepted   Euphorbia einensis G. Will. – accepted   Euphorbia einensis var. anemoarenicola G. Will. – accepted   Euphorbia einensis var. einensis G. Will. – accepted   Euphorbia elastica Jum. – accepted   Euphorbia elastica Marloth – not accepted   Euphorbia elastica Poiss. & Pax – not accepted   Euphorbia elastica Altam. & Rose – not accepted   Euphorbia elata Brandegee – not accepted   Euphorbia eleanoriae (Lorence & W.L. Wagner) Govaerts – accepted – Na Pali sandmat   Euphorbia elegans Spreng. – accepted   Euphorbia elegans var. laxa Boiss. – not accepted   Euphorbia elegantissima P.R.O. Bally & S. Carter – accepted   Euphorbia ellenbeckii Pax – accepted   Euphorbia elliotii Leandri – accepted   Euphorbia ellipsifolia Gilli – accepted   Euphorbia elliptica Lam. – accepted   Euphorbia elliptica Thunb. – not accepted   Euphorbia elodes Boiss. – accepted   Euphorbia elodes var. minor Boiss. – not accepted   Euphorbia elongata Poir. – not accepted   Euphorbia elquiensis Phil. – accepted   Euphorbia elwendica Stapf – not accepted   Euphorbia elymaitica Bornm. – accepted   Euphorbia emarginata Lam. – not accepted   Euphorbia emarginata Aiton – not accepted   Euphorbia emarginata (Klotzsch & Garcke) Boiss. – not accepted   Euphorbia emirnensis Baker – accepted   Euphorbia emodi Hook. f. – not accepted   Euphorbia enalla Brandegee – not accepted   Euphorbia engelmannii Boiss. – accepted   Euphorbia engelmannii var. depressa Boiss. – not accepted   Euphorbia engleri Pax – accepted   Euphorbia engleriana Dinter – accepted   Euphorbia enneagona Haw. – not accepted   Euphorbia enormis N.E. Br. – accepted   Euphorbia ensifolia Baker – accepted   Euphorbia enterophora Drake – accepted   Euphorbia enterophora ssp. crassa Cremers – accepted   Euphorbia enterophora ssp. enterophora Drake – accepted   Euphorbia ephedroides E. Mey. ex Boiss. – accepted   Euphorbia ephedroides var. debilis L.C. Leach – accepted   Euphorbia ephedroides var. ephedroides E. Mey. ex Boiss. – accepted   Euphorbia ephedroides var. imminuta L.C. Leach & G. Will. – accepted   Euphorbia ephedromorpha Bartlett ex B.L. Rob. & Bartlett – accepted   Euphorbia epicyparissias (E. Mey. ex Klotzsch & Garcke) Boiss. – accepted   Euphorbia epicyparissias E. Mey. ex Klotzsch & Garcke – not accepted   Euphorbia epilobiifolia W.T. Wang – not accepted   Euphorbia epiphylloides Kurz – accepted   Euphorbia epithymoides L. – accepted – cushion spurge   Euphorbia epithymoides f. glabrescens Rostanski – not accepted   Euphorbia epithymoides ssp. lingulata (Heuff.) Nyman – not accepted   Euphorbia epithymoides var. polychroma (A. Kern.) Nyman – not accepted   Euphorbia epithymoides var. samnitica Fiori – not accepted   Euphorbia epithymoides var. verrucosa Fiori – not accepted   Euphorbia equisetiformis A. Stewart – accepted   Euphorbia eranthes R.A. Dyer & Milne-Redh. – accepted   Euphorbia eremica Jeps. – not accepted   Euphorbia eremocarpus Pharm. ex Wehmer – not accepted   Euphorbia eremophila A. Cunn. ex Hook. – not accepted   Euphorbia eremophila var. dracunculina Baill. – not accepted   Euphorbia eremophila var. filiformis Baill. – not accepted   Euphorbia eremophila var. genuina Baill. – not accepted   Euphorbia eremophila var. latifolia Boiss. – not accepted   Euphorbia eremophila var. microdendron Baill. – not accepted   Euphorbia eremophila var. oblonga Domin – not accepted   Euphorbia eremophila var. phyllanthina Baill. – not accepted   Euphorbia eremophila var. typica Domin – not accepted   Euphorbia eriantha Benth. – accepted – beetle spurge, Mexican poinsettia   Euphorbia ericetorum Zumagl. – not accepted   Euphorbia ericifolia Pax – not accepted   Euphorbia ericoides Lam. – accepted   Euphorbia erigavensis S. Carter – accepted   Euphorbia erinacea Boiss. & Kotschy – accepted   Euphorbia eriocarpa Bertol. – not accepted   Euphorbia erioclada Boiss. & Heldr. – not accepted   Euphorbia eriogonoides Small – not accepted   Euphorbia eriophora Boiss. – accepted   Euphorbia eriophylla Kar. & Kir. – not accepted   Euphorbia erlangeri Pax – accepted   Euphorbia erosa Willd. – not accepted   Euphorbia erubescens Boiss. – accepted   Euphorbia erubescens E. Mey. ex Boiss. – not accepted   Euphorbia erythradenia Boiss. – accepted   Euphorbia erythradenia var. obovata Boiss. – not accepted   Euphorbia erythraea Hemsl. – not accepted   Euphorbia erythraeae (Berger) N.E. Br. – not accepted   Euphorbia erythrantha F. Muell. – not accepted   Euphorbia erythrina Link – accepted   Euphorbia erythrina var. burchellii Boiss. – not accepted   Euphorbia erythrocephala P.R.O. Bally & Milne-Redh. – accepted   Euphorbia erythroclada Boiss. – accepted – Dhudheri   Euphorbia erythrocoma H. Lév. – not accepted   Euphorbia erythrocucullata Mangelsdorff – accepted   Euphorbia erythrodon Boiss. & Heldr. – accepted   Euphorbia erythrophylla Bertol. – not accepted   Euphorbia erythrorrhiza (Klotzsch & Garcke) Boiss. – not accepted   Euphorbia erythrosperma A. Kern. – not accepted   Euphorbia erythroxyloides Baker – accepted   Euphorbia esculenta Marloth – accepted   Euphorbia espinosa Pax – accepted   Euphorbia espirituensis M.E. Jones – not accepted   Euphorbia esquirolii H. Lév. & Vaniot – not accepted   Euphorbia estevesii N. Zimm. & P.J. Braun – accepted   Euphorbia esula L. – accepted – spurge, wolf's milk, wolf's-milk, leafy spurge   Euphorbia esula f. esulifolia (Thell.) Kuzmanov – not accepted   Euphorbia esula ssp. aragonensis Nyman – not accepted   Euphorbia esula ssp. chankoana (Vorosch.) Vorosch. – not accepted   Euphorbia esula ssp. esula L. – accepted   Euphorbia esula ssp. maglicensis (Rohlena) Hayek – accepted   Euphorbia esula ssp. nevadensis (Boiss. & Reut.) Malag. – not accepted   Euphorbia esula ssp. orientalis (Boiss.) Molero & Rovira – not accepted   Euphorbia esula ssp. paradoxa (Schur) Simonk. – not accepted   Euphorbia esula ssp. pseudocyparissias (Jord.) Nyman – not accepted   Euphorbia esula ssp. saratoi (Ardoino) P. Fourn. – not accepted   Euphorbia esula ssp. tommasiniana (Bertol.) Kuzmanov – accepted   Euphorbia esula ssp. tristis (Besser) Rouy – not accepted   Euphorbia esula var. acutifolia Lange – not accepted   Euphorbia esula var. ararica (Jord.) Nyman – not accepted   Euphorbia esula var. cyparissioides Boiss. – accepted   Euphorbia esula var. esula L. – accepted – spurge, wolf's milk, wolf's-milk, leafy spurge   Euphorbia esula var. genuina Boiss. – not accepted   Euphorbia esula var. gracilis Nyman – not accepted   Euphorbia esula var. latifolia (C.A. Mey. ex Ledeb.) Ledeb. – not accepted   Euphorbia esula var. mosana (Lej.) Boiss. – not accepted   Euphorbia esula var. orientalis (Boiss.) Kuzmanov – not accepted – leafy spurge, spurge, oriental wolf's milk   Euphorbia esula var. paradoxa Schur – not accepted   Euphorbia esula var. pinifolia Boiss. – not accepted   Euphorbia esula var. pseudotenuifolia Sennen – not accepted   Euphorbia esula var. riparia (Jord.) Schur – not accepted   Euphorbia esula var. taurica Besser – not accepted   Euphorbia esula var. triumfetti (Bertol.) Nyman – not accepted   Euphorbia esula var. uralensis (Fisch. ex Link) Dorn – not accepted – Russian leafy spurge, leafy spurge, spurge, wolf's milk   Euphorbia esuliformis S. Schauer ex Nees & S. Schauer – accepted   Euphorbia esuliformis var. subdentata Engelm. – not accepted   Euphorbia esuloides (DC.) Ten. – not accepted   Euphorbia esuloides Velen. ex Nyman – not accepted   Euphorbia etuberculosa P.R.O. Bally & S. Carter – accepted   Euphorbia euboea Halácsy – not accepted   Euphorbia eugeniae Prokh. – accepted   Euphorbia eumyrmodes Baker ex Denis – not accepted   Euphorbia euonymoclada Croizat – accepted   Euphorbia euryops Bullock – not accepted   Euphorbia evansii Pax – accepted   Euphorbia evonymicarpa Chodat & Hassl. – not accepted   Euphorbia excelsa A.C. White, R.A. Dyer & B. Sloane – accepted   Euphorbia exclusa S. Watson – not accepted   Euphorbia exigua L. – accepted – dwarf spurge, ésula meno, hierbecilla traidora, small spurge   Euphorbia exigua ssp. exigua L. – accepted   Euphorbia exigua ssp. merinoi M. Laínz – accepted   Euphorbia exigua subvar. tricuspidata (Lapeyr.) Nyman – not accepted   Euphorbia exigua var. acuta L. – not accepted   Euphorbia exigua var. melillensis Sennen – not accepted   Euphorbia exigua var. pycnophylla K.U. Kramer & Westra – not accepted   Euphorbia exigua var. retusa L. – not accepted   Euphorbia exigua var. tricuspidata (Lapeyr.) W. Koch – not accepted   Euphorbia exigua var. truncata W. Koch – not accepted   Euphorbia exilis L.C. Leach – accepted   Euphorbia exilispina S. Carter – accepted   Euphorbia expansa Janka – not accepted   Euphorbia exserta (Small) Coker – accepted – coastal sand spurge   Euphorbia exstipulata Engelm. – accepted – squareseed spurge, square-seed spurge, Clark Mountain spurge   Euphorbia exstipulata var. exstipulata Engelm. – not accepted – squareseed spurge, Clark Mountain spurge   Euphorbia exstipulata var. lata Warnock & M.C. Johnst. – not accepted – squareseed spurge   Euphorbia exumensis (Millsp.) Correll – not accepted   Euphorbia eyassiana P.R.O. Bally & S. Carter – accepted   Euphorbia eylesii Rendle – accepted   Euphorbia falcata L. – accepted – sickle spurge   Euphorbia falcata f. rubra (Cav.) Nikolic – not accepted   Euphorbia falcata ssp. falcata L. – accepted   Euphorbia falcata ssp. macrostegia (Bornm.) O. Schwarz – accepted   Euphorbia falcata ssp. rubra (Cav.) Mateo & Figuerola – not accepted   Euphorbia falcata var. acuminata (Lam.) St.-Amans – not accepted   Euphorbia falcata var. croizatii Sennen & Mauricio – not accepted   Euphorbia falcata var. ecornuta Boiss. – not accepted   Euphorbia falcata var. falcata L. – accepted   Euphorbia falcata var. falciformis Griseb. – not accepted   Euphorbia falcata var. galilaea (Boiss.) Boiss. – accepted   Euphorbia falcata var. genuina Maire – not accepted   Euphorbia falcata var. latifolia Font Quer – not accepted   Euphorbia falcata var. macrostegia Bornm. – not accepted   Euphorbia falcata var. maroccana Murb. – not accepted   Euphorbia falcata var. minor W. Koch – not accepted   Euphorbia falcata var. obscura (Loisel.) Nyman – not accepted   Euphorbia falcata var. peploiforme Sennen – not accepted   Euphorbia falcata var. rubra (Cav.) Boiss. – not accepted   Euphorbia fallax Hagenb. – not accepted   Euphorbia fallax Deysson – not accepted   Euphorbia falsa N.E. Br. – not accepted   Euphorbia famatamboay F. Friedmann & Cremers – accepted   Euphorbia famatamboay ssp. famatamboay F. Friedmann & Cremers – accepted   Euphorbia famatamboay ssp. itampolensis F. Friedmann & Cremers – accepted   Euphorbia fanshawei L.C. Leach – accepted   Euphorbia fascicaulis S. Carter – accepted   Euphorbia fasciculata Thunb. – accepted   Euphorbia fastuosa Sessé & Moç. – not accepted   Euphorbia faucicola L.C. Leach – accepted   Euphorbia fauriei H. Lév. & Vaniot – accepted   Euphorbia faurotii Franch. – not accepted   Euphorbia feddemae McVaugh – accepted   Euphorbia fendleri Torr. & A. Gray – accepted – Fendler's sandmat   Euphorbia fendleri var. chaetocalyx Boiss. – not accepted   Euphorbia fendleri var. dissimilis Payson – not accepted   Euphorbia fendleri var. triligulata L.C. Wheeler – not accepted   Euphorbia fendleri var. typica L.C. Wheeler – not accepted   Euphorbia ferdinandii Baill. – not accepted   Euphorbia ferdowsiana Pahlevani – accepted   Euphorbia ferganensis B. Fedtsch. – accepted   Euphorbia ferox Marloth – accepted   Euphorbia festiva Sherff – not accepted   Euphorbia fianarantsoae Ursch & Leandri – accepted   Euphorbia fidjiana Boiss. – not accepted   Euphorbia fieldii Sirj. – not accepted   Euphorbia fiha Decary – not accepted   Euphorbia fiherenensis Poiss. – accepted   Euphorbia filicaulis Urb. – not accepted   Euphorbia filicina Port. – accepted   Euphorbia filicina var. alpina Boiss. – not accepted   Euphorbia filicina var. montana Boiss. – not accepted   Euphorbia filiflora Marloth – accepted   Euphorbia filiflora var. nana G. Will. – not accepted   Euphorbia filiformis (P.R.O. Bally) Bruyns – accepted   Euphorbia filipes Benth. – not accepted   Euphorbia fimbriata Scop. – not accepted   Euphorbia fimbriata B. Heyne ex Roth – not accepted   Euphorbia fimbriata Wall. ex Boiss. – not accepted   Euphorbia fimbriata Boiss. – not accepted   Euphorbia fimbriata var. laxa Boiss. – not accepted   Euphorbia fimbrilligera Mart. – not accepted   Euphorbia finkii (Boiss.) V.W. Steinm. – accepted   Euphorbia finlaysonii J.M. Black – not accepted   Euphorbia firma Ledeb. – not accepted   Euphorbia fischeri Pax – accepted   Euphorbia fischeriana Steud. – accepted   Euphorbia fischeriana f. glaberrima (Maxim.) Oudejans – not accepted   Euphorbia fischeriana f. pilosa (Regel) Oudejans – not accepted   Euphorbia fischeriana var. komaroviana (Prokh.) G.L. Chu – not accepted   Euphorbia fissispina P.R.O. Bally & S. Carter – accepted   Euphorbia fistulosa M.S. Khan – accepted   Euphorbia flabellaris Anderson ex Boiss. – not accepted   Euphorbia flagelliformis (Engelm.) Engelm. – not accepted   Euphorbia flamandii Batt. – not accepted   Euphorbia flanaganii N.E. Br. – accepted   Euphorbia flaviana Carn.-Torres & Cordeiro – accepted   Euphorbia flavicoma DC. – accepted   Euphorbia flavicoma ssp. bermejense Hidalgo-Triana, Pérez Lat. & Cabezudo – accepted   Euphorbia flavicoma ssp. brittingeri (Opiz ex Samp.) O. Bolòs & Vigo – not accepted   Euphorbia flavicoma ssp. costeana (Rouy) Vindt & Guin. ex Greuter & Burdet – accepted   Euphorbia flavicoma ssp. flavicoma DC. – accepted   Euphorbia flavicoma ssp. giselae Simon Pall. – accepted   Euphorbia flavicoma ssp. mariolensis (Rouy) O. Bolòs & Vigo – not accepted   Euphorbia flavicoma ssp. occidentalis M. Laínz – accepted   Euphorbia flavicoma ssp. polygalifolia (Boiss. & Reut.) O. Bolòs & Vigo – not accepted   Euphorbia flavicoma ssp. verrucosa (L.) Breistr. – not accepted   Euphorbia flavicoma ssp. verrucosa (Fiori) Pignatti – not accepted   Euphorbia flavicoma var. ruscinonensis (Boiss.) O. Bolòs & Vigo – not accepted   Euphorbia flavicoma var. velutina (Boiss.) Breistr. – not accepted   Euphorbia flavopurpurea Willk. – not accepted   Euphorbia fleurotii Jord. – not accepted   Euphorbia flexicaulis Scheele – not accepted   Euphorbia flexuosa Kunth – not accepted   Euphorbia flindersica Halford & W.K. Harris – accepted   Euphorbia floccosiuscula M.E. Jones – not accepted   Euphorbia floresii Standl. – not accepted   Euphorbia floribunda Engelm. ex Boiss. – accepted   Euphorbia florida Engelm. – accepted – Chiricahua Mountain sandmat   Euphorbia floridana Chapm. – accepted – Greater Florida spurge   Euphorbia fluminis S. Carter – accepted   Euphorbia fodhliana Deflers – not accepted   Euphorbia foetida Kit. – not accepted   Euphorbia foetida Schult. ex Rchb. – not accepted   Euphorbia foetida Hoppe ex W.D.J. Koch – not accepted   Euphorbia foliata Buch.-Ham. ex Dillwyn – not accepted   Euphorbia foliiflua Ule – not accepted   Euphorbia foliolosa Boiss. – accepted   Euphorbia foliosa (Klotzsch & Garcke) N.E. Br. – accepted   Euphorbia fontanesii Steud. – not accepted   Euphorbia fontqueriana Greuter – accepted   Euphorbia forbesii Sherff – not accepted   Euphorbia formosana Hayata – not accepted   Euphorbia forolensis L.E. Newton – accepted   Euphorbia forskalii var. glabrata J. Gay – not accepted   Euphorbia forsskalii J. Gay – accepted   Euphorbia fortissima L.C. Leach – accepted   Euphorbia fortuita A.C. White, R.A. Dyer & B. Sloane – accepted   Euphorbia fosbergii (J. Florence) Govaerts – accepted   Euphorbia fossulata Boiss. & Gaill. – not accepted   Euphorbia fournieri Leandri – not accepted   Euphorbia fournieri Rebut – not accepted   Euphorbia fractiflexa S. Carter & J.R.I. Wood – accepted   Euphorbia fragifera Jan – accepted   Euphorbia fragifera Schur – not accepted   Euphorbia fragifera var. inermis Nyman – not accepted   Euphorbia fragiliramulosa L.C. Leach – not accepted   Euphorbia fragilis Decne. – not accepted   Euphorbia francescae L.C. Leach – not accepted   Euphorbia franchetii B. Fedtsch. – accepted   Euphorbia franckiana A. Berger – accepted   Euphorbia francoana Boiss. – accepted   Euphorbia francoisii Leandri – accepted   Euphorbia francoisii var. crassicaulis Rauh – accepted   Euphorbia francoisii var. francoisii Leandri – accepted   Euphorbia francoisii var. rakotozafyi Cremers – not accepted   Euphorbia frangulifolia Kunth – not accepted   Euphorbia frankii Lavranos – accepted   Euphorbia fraseri Boiss. – accepted   Euphorbia fraterna N.E. Br. – not accepted   Euphorbia frickiana N.E. Br. – not accepted   Euphorbia friedrichiae Dinter – accepted   Euphorbia friesii (N.E. Br.) Bruyns – accepted   Euphorbia friesiorum (Hassl.) S. Carter – accepted   Euphorbia frivaldszkyana Dörfl. & Degen ex Halácsy – not accepted   Euphorbia froedinii Rech. f. – not accepted   Euphorbia fructus-pini Mill. – not accepted   Euphorbia frutescens N.E. Br. – not accepted   Euphorbia fruticosa Forssk. – accepted – Shurur   Euphorbia fruticosa Biv. – not accepted   Euphorbia fruticosa Edgew. – not accepted   Euphorbia fruticulosa Engelm. ex Boiss. – accepted   Euphorbia fruticulosa var. fruticulosa Engelm. ex Boiss. – accepted   Euphorbia fruticulosa var. hirtella M.C. Johnst. – accepted   Euphorbia fuentesii V.W. Steinm. – accepted   Euphorbia fuhsii Bornm. & Sint. ex Prokh. – not accepted   Euphorbia fulgens Karw. ex Klotzsch – accepted – scarlet-plume   Euphorbia fulva Stapf – not accepted   Euphorbia furcata N.E. Br. – accepted   Euphorbia furcatifolia M.G. Gilbert – accepted   Euphorbia furcillata Kunth – accepted   Euphorbia furcillata var. ribana M.C. Johnst. – not accepted   Euphorbia fusca Marloth – not accepted   Euphorbia fuscolanata Gilli – accepted   Euphorbia fusiformis Buch.-Ham. ex D. Don – accepted   Euphorbia fusiformis var. fusiformis Buch.-Ham. ex D. Don – accepted   Euphorbia fusiformis var. khandallensis (Blatt. & Hallb.) Binojk. & N.P. Balakr. – accepted   Euphorbia fwambensis (N.E. Br.) Bruyns – accepted   Euphorbia gaditana Coss. – accepted   Euphorbia gaillardotii Boiss. & Blanche – accepted   Euphorbia galapageia B.L. Rob. & Greenm. – accepted   Euphorbia galgalana S. Carter – accepted   Euphorbia galiciana McVaugh – not accepted   Euphorbia galilaea Boiss. – not accepted   Euphorbia galioides Boiss. – not accepted   Euphorbia galpinii Pax – not accepted   Euphorbia gammaranoi G. Will. – accepted   Euphorbia garanbiensis Hayata – accepted   Euphorbia garberi Engelm. ex Chapm. – accepted – Garber's spurge, Garber's sandmat   Euphorbia garheana Boiss. – not accepted   Euphorbia gariepina Boiss. – accepted   Euphorbia gariepina ssp. balsamea (Welw. ex Hiern) L.C. Leach – accepted   Euphorbia gariepina ssp. gariepina Boiss. – accepted   Euphorbia garkeana Boiss. – not accepted   Euphorbia garrullae Sennen – not accepted   Euphorbia garuana N.E. Br. – accepted   Euphorbia gasparrinii Boiss. – accepted   Euphorbia gasparrinii ssp. gasparrinii Boiss. – accepted   Euphorbia gasparrinii ssp. samnitica (Fiori) Pignatti – accepted   Euphorbia gaubae var. velutina (Bornm. & Gauba) Oudejans – not accepted   Euphorbia gaudichaudii Boiss. – accepted – spurge   Euphorbia gaumeri Millsp. – not accepted   Euphorbia gayi Salis – accepted   Euphorbia gayi var. balearica Willk. – not accepted   Euphorbia geayi Costantin & Gallaud – not accepted   Euphorbia gebelica Brullo – accepted   Euphorbia gedrosiaca Rech. f., Aellen & Esfand. – accepted   Euphorbia geldorensis S. Carter – accepted   Euphorbia gemella Lag. – not accepted   Euphorbia geminata (Aiton) Marloth ex A.C. White, R.A. Dyer & B. Sloane – not accepted   Euphorbia geminiloba Millsp. – not accepted   Euphorbia gemmea P.R.O. Bally & S. Carter – accepted   Euphorbia geniculata Ortega – not accepted   Euphorbia genistoides P.J. Bergius – accepted   Euphorbia genistoides var. corifolia (Lam.) N.E. Br. – accepted   Euphorbia genistoides var. genistoides P.J. Bergius – accepted   Euphorbia genistoides var. leiocarpa Boiss. – accepted   Euphorbia genistoides var. major Boiss. – accepted   Euphorbia genoudiana Ursch & Leandri – accepted   Euphorbia gentilis N.E. Br. – accepted   Euphorbia gentilis ssp. gentilis N.E. Br. – accepted   Euphorbia gentilis ssp. tanquana L.C. Leach – accepted   Euphorbia gentryi V.W. Steinm. & T.F. Daniel – accepted   Euphorbia georgei Oudejans – not accepted – pointed sandmat   Euphorbia georgiana Mayfield – accepted   Euphorbia gerardiana Jacq. – not accepted   Euphorbia gerardiana ssp. loiseleurii Rouy – not accepted   Euphorbia gerardiana ssp. saxicola Velen. – not accepted   Euphorbia gerardiana var. arenivaga Martrin-Donos – not accepted   Euphorbia gerardiana var. dentata Chabert – not accepted   Euphorbia gerardiana var. firma (Ledeb.) Boiss. – not accepted   Euphorbia gerardiana var. hohenackeri Boiss. – not accepted   Euphorbia gerardiana var. homophylla (Lange ex Schrank) Nyman – not accepted   Euphorbia gerardiana var. intermedia Savul. – not accepted   Euphorbia gerardiana var. lanceolata Cariot – not accepted   Euphorbia gerardiana var. latifolia J.J. Schmitz & Regel – not accepted   Euphorbia gerardiana var. minor Duby – not accepted   Euphorbia gerardiana var. sturii Holuby – not accepted   Euphorbia germainii Phil. – accepted   Euphorbia geroldii Rauh – accepted   Euphorbia gerstneriana Bruyns – accepted   Euphorbia geyeri Engelm. – accepted – Geyer's sandmat, Geyer's spurge   Euphorbia geyeri var. geyeri Engelm. – accepted – Geyer's sandmat, Geyer's spurge   Euphorbia geyeri var. microsperma A. Gray – not accepted   Euphorbia geyeri var. wheeleriana Warnock & M.C. Johnst. – accepted – Geyer's sandmat   Euphorbia gibelliana Peola – not accepted   Euphorbia gibraltarica Wolley-Dod – not accepted   Euphorbia giessii L.C. Leach – accepted   Euphorbia gilbertiana Bisseret & Specks – accepted   Euphorbia gilbertii A. Berger – not accepted   Euphorbia gillettii P.R.O. Bally & S. Carter – accepted   Euphorbia gillettii ssp. gillettii P.R.O. Bally & S. Carter – accepted   Euphorbia gillettii ssp. tenuior S. Carter – accepted   Euphorbia giumboensis A. Hässl. – accepted   Euphorbia glaberrima K. Koch – accepted   Euphorbia glaberrima Klotzsch – not accepted   Euphorbia glabrata Sw. – not accepted   Euphorbia glabriflora Vis. – accepted   Euphorbia gladiata (P.R.O. Bally) Bruyns – accepted   Euphorbia gladiosa M.E. Jones – not accepted   Euphorbia glanduligera Pax – accepted   Euphorbia glareosa Pall. ex M. Bieb. – accepted   Euphorbia glareosa ssp. maleevii (Tamamsch.) Tamamsch. – not accepted   Euphorbia glareosa var. lasiocarpa Boiss. – not accepted   Euphorbia glareosa var. pannonica (Host) Nyman – not accepted   Euphorbia glareosa var. varnensis Velen. – not accepted   Euphorbia glauca G. Forst. – accepted   Euphorbia glauca Steud. – not accepted   Euphorbia glauca Roxb. – not accepted   Euphorbia glaucella Pax – not accepted   Euphorbia glaucophylla Poir. – accepted   Euphorbia glaucopoda Diels – not accepted   Euphorbia glebulosa Coss. & Durieu – not accepted   Euphorbia glebulosa ssp. intermedia Maire – not accepted   Euphorbia glebulosa var. almeriensis Lange – not accepted   Euphorbia glebulosa var. peplidea Boiss. – not accepted   Euphorbia globosa (Haw.) Sims – accepted   Euphorbia globulicaulis S. Carter – accepted   Euphorbia globulifera Kunth – not accepted   Euphorbia globulosa Boiss. – not accepted   Euphorbia glochidiata Pax – accepted   Euphorbia glomerifera (Millsp.) L.C. Wheeler – not accepted   Euphorbia glomerulans (Prokh.) Prokh. – accepted   Euphorbia glyptosperma Engelm. – accepted – ridgeseed spurge, ribseed sandmat   Euphorbia glyptosperma var. pubescens Boiss. – not accepted   Euphorbia glyptosperma var. tenerrima Engelm. – not accepted   Euphorbia gmelinii Steud. – accepted   Euphorbia godana Buddens., Lawant & Lavranos – accepted   Euphorbia goeringii Steud. ex Boiss. – not accepted   Euphorbia goetzei Pax – accepted   Euphorbia gokakensis S.R. Yadav, Malpure & Chandore – accepted   Euphorbia goldei Prokh. – not accepted   Euphorbia goliana Comm. ex Lam. – accepted   Euphorbia golisana N.E. Br. – not accepted   Euphorbia gollmeriana Klotzsch ex Boiss. – accepted   Euphorbia golondrina L.C. Wheeler – accepted – Boquillas sandmat, canyon spurge, swallow spurge   Euphorbia gorinii Chiov. – not accepted   Euphorbia gossweileri Pax – not accepted   Euphorbia gossypina Pax – accepted   Euphorbia gossypina ssp. gossypina Pax – accepted   Euphorbia gossypina ssp. mangulensis S. Carter – accepted   Euphorbia gossypina var. coccinea Pax – accepted   Euphorbia gossypina var. gossypina Pax – accepted   Euphorbia gottlebei Rauh – accepted   Euphorbia goudotii Boiss. – not accepted   Euphorbia goyazensis Boiss. – accepted   Euphorbia gracilicaulis L.C. Leach – accepted   Euphorbia gracilior Cronquist – not accepted   Euphorbia gracilipes Baill. – not accepted   Euphorbia graciliramea Pax – accepted   Euphorbia gracilis Elliott – not accepted   Euphorbia gracilis Loisel. – not accepted   Euphorbia gracilis Besser ex M. Bieb. – not accepted   Euphorbia gracilis var. rotundifolia A. Wood – not accepted   Euphorbia gracillima S. Watson – accepted – Mexican sandmat   Euphorbia gradyi V.W. Steinm. & Ram.-Roa – accepted   Euphorbia graeca Boiss. & Spruner – not accepted   Euphorbia graeca ssp. dalmatica (Vis.) Nyman – not accepted   Euphorbia graeca var. brachyceras Candargy – not accepted   Euphorbia graminea Jacq. – accepted – grassleaf spurge   Euphorbia graminea Schltdl. & Cham. – not accepted   Euphorbia graminea f. foliosa McVaugh – accepted   Euphorbia graminea var. acutifolia Boiss. – not accepted   Euphorbia graminea var. graminea Jacq. – accepted   Euphorbia graminea var. lancifolia Millsp. – not accepted   Euphorbia graminea var. novogaliciana McVaugh – accepted   Euphorbia graminea var. pedunculosa (A. Rich.) Boiss. – not accepted   Euphorbia graminea var. picta (Jacq.) Boiss. – not accepted   Euphorbia graminea var. subsinuata (Klotzsch & Garcke) Boiss. – not accepted   Euphorbia graminea var. virgata Millsp. – not accepted   Euphorbia graminifolia Michx. – not accepted   Euphorbia graminifolia Vill. – accepted   Euphorbia graminifolia ssp. tommasiniana (Bertol.) Oudejans – not accepted   Euphorbia graminifolia ssp. zhiguliensis (Prokh.) Oudejans – not accepted   Euphorbia grammata (McVaugh) Oudejans – accepted   Euphorbia grandialata R.A. Dyer – accepted   Euphorbia grandicornis Goebel ex N.E. Br. – accepted   Euphorbia grandicornis ssp. grandicornis Goebel ex N.E. Br. – accepted   Euphorbia grandicornis ssp. sejuncta L.C. Leach – accepted   Euphorbia grandidens Haw. – accepted   Euphorbia grandidieri Baill. – accepted   Euphorbia grandifolia Haw. – accepted   Euphorbia grandis Lem. – not accepted   Euphorbia graniticola L.C. Leach – accepted   Euphorbia grantii Oliv. – accepted   Euphorbia grantii var. friesiorum Hassl. – not accepted   Euphorbia granulata Forssk. – accepted   Euphorbia granulata var. decumbens Forssk. – not accepted   Euphorbia granulata var. dentata N.E. Br. – not accepted   Euphorbia granulata var. glaberrima Boiss. – not accepted   Euphorbia granulata var. glabra Maire – not accepted   Euphorbia granulata var. granulata Forssk. – accepted   Euphorbia granulata var. turcomanica (Boiss.) Hadidi – accepted   Euphorbia graveolens N.E. Br. – not accepted   Euphorbia greenei Millsp. – not accepted   Euphorbia greenwayi P.R.O. Bally & S. Carter – accepted   Euphorbia greenwayi ssp. breviaculeata S. Carter – accepted   Euphorbia greenwayi ssp. greenwayi P.R.O. Bally & S. Carter – accepted   Euphorbia gregaria Marloth – accepted   Euphorbia gregersenii K. Malý ex Beck – accepted   Euphorbia greggii Engelm. ex Boiss. – accepted   Euphorbia greuteri N. Kilian, Kürschner & P. Hein – accepted   Euphorbia griffithii Hook. f. – accepted   Euphorbia griffithii var. bhutanica (Fisch.) D.G. Long – accepted   Euphorbia griffithii var. griffithii Hook. f. – accepted   Euphorbia grisea Engelm. ex Boiss. – not accepted   Euphorbia griseola Pax – accepted   Euphorbia griseola ssp. griseola Pax – accepted   Euphorbia griseola ssp. mashonica L.C. Leach – accepted   Euphorbia griseola ssp. zambiensis L.C. Leach – accepted   Euphorbia grisophylla M.S. Khan – accepted   Euphorbia groenewaldii R.A. Dyer – accepted   Euphorbia grosseri Pax – accepted   Euphorbia grossheimii (Prokh.) Prokh. – accepted   Euphorbia guachanca Haenke – accepted   Euphorbia guadalajarana S. Watson – accepted   Euphorbia guadalupensis J.T. Howell – not accepted   Euphorbia guanarensis Pittier – accepted   Euphorbia guaraniorum P. Carrillo & V.W. Steinm. – accepted   Euphorbia guatemalensis Standl. & Steyerm. – accepted   Euphorbia gueinzii Boiss. – accepted   Euphorbia guentheri (Pax) Bruyns – accepted   Euphorbia guerichiana Pax – accepted   Euphorbia guestii Blakelock – not accepted   Euphorbia guiengola W.R. Buck & Huft – accepted   Euphorbia guilielmii A. Gray – not accepted   Euphorbia guillauminiana Boiteau – accepted   Euphorbia guillemetii Ursch & Leandri – not accepted   Euphorbia gulestanica Podlech – accepted   Euphorbia gumaroi J. Meyrán – accepted   Euphorbia gummifera Boiss. – accepted   Euphorbia gundlachii Urb. – not accepted   Euphorbia guntensis (Prokh.) Prokh. – accepted   Euphorbia gussoneana Lojac. – not accepted   Euphorbia guyoniana Boiss. & Reut. – accepted   Euphorbia gymnadenia Urb. – not accepted   Euphorbia gymnocalycioides M.G. Gilbert & S. Carter – accepted   Euphorbia gymnoclada Boiss. – accepted   Euphorbia gymnoclada Engelm. – not accepted   Euphorbia gymnonota Urb. – accepted   Euphorbia gynophora Pax – not accepted   Euphorbia gypsicola Rech. f. & Aellen – accepted   Euphorbia gypsophila S. Carter – accepted   Euphorbia hadramautica Baker – accepted   Euphorbia haeleeleana D.R. Herbst – accepted – Kauai spurge, `akoko   Euphorbia haematantha Boiss. – accepted   Euphorbia haematodes Boiss. – not accepted   Euphorbia haevermansii X. Aubriot & Lowry – accepted   Euphorbia hainanensis Croizat – accepted   Euphorbia hajhirensis Radcl.-Sm. – accepted   Euphorbia hakutosanensis Hurus. – accepted   Euphorbia halacsyi Formánek – not accepted   Euphorbia halemanui Sherff – accepted – Kauai sandmat   Euphorbia halipedicola L.C. Leach – accepted   Euphorbia halleri Dinter – not accepted   Euphorbia hallii R.A. Dyer – accepted   Euphorbia halophila Miq. – not accepted   Euphorbia halophila Bornm. & Gauba – not accepted   Euphorbia halophila var. velutina Bornm. & Gauba – not accepted   Euphorbia hamaderoensis A.G. Mill. – accepted – Gisso, Jissoh   Euphorbia hamata (Haw.) Sweet – accepted   Euphorbia hamiltonii Oudejans – not accepted   Euphorbia handeniensis S. Carter – accepted   Euphorbia handiensis Burchard – accepted   Euphorbia harmandii Gagnep. – not accepted   Euphorbia hartwegiana Boiss. – not accepted   Euphorbia hassleriana Chodat – not accepted   Euphorbia hastisquama N.E. Br. – not accepted   Euphorbia haussknechtii Boiss. – accepted   Euphorbia havanensis Willd. ex Boiss. – not accepted   Euphorbia hebecarpa Boiss. – accepted   Euphorbia hebegyne Pax & K. Hoffm. ex Emrich – not accepted   Euphorbia hedigeriana (Malaisse) Bruyns – accepted   Euphorbia hedyotoides N.E. Br. – accepted   Euphorbia heishuiensis W.T. Wang – accepted   Euphorbia heldreichii Orph. ex Boiss. – accepted   Euphorbia heldreichii var. roeseri Boiss. – not accepted   Euphorbia helenae Urb. – accepted   Euphorbia helenae ssp. grandifolia Borhidi & O. Muñiz – accepted   Euphorbia helenae ssp. helenae Urb. – accepted   Euphorbia heleniana Thell. & Stapf – accepted   Euphorbia helicothele Lem. – not accepted   Euphorbia helioscopia L. – accepted – madwoman's milk, summer spurge, sun spurge, wartweed   Euphorbia helioscopia f. litoralis (Hurus.) Oudejans – not accepted   Euphorbia helioscopia f. major (Mutel) Oudejans – not accepted   Euphorbia helioscopia ssp. dominii (Röhl.) K. Malý – not accepted   Euphorbia helioscopia ssp. helioscopia L. – accepted   Euphorbia helioscopia ssp. helioscopioides (Loscos & Pardo) Nyman – accepted   Euphorbia helioscopia ssp. hiemalis A.P. Khokhr. – accepted   Euphorbia helioscopia var. haussknechtii (Boiss.) Boiss. – not accepted   Euphorbia helioscopia var. major Mutel – not accepted   Euphorbia helioscopioides Loscos & Pardo – not accepted   Euphorbia helioscopioides Blatt. – not accepted   Euphorbia helleri Millsp. – accepted – Heller's spurge   Euphorbia helwigii Urb. & Ekman – accepted   Euphorbia henricksonii M.C. Johnst. – accepted   Euphorbia henryi Hemsl. – not accepted   Euphorbia hepatica Urb. & Ekman – accepted   Euphorbia hepatica P.R.O. Bally & S. Carter – not accepted   Euphorbia heptagona L. – accepted   Euphorbia heptapotamica Golosk. – accepted   Euphorbia heraldiana (Millsp.) Oudejans – not accepted   Euphorbia herbacea (Pax) Bruyns – accepted   Euphorbia herbstii (W.L. Wagner) Oudejans – accepted – Herbst's sandmat   Euphorbia hercegovina Beck – accepted   Euphorbia hereroensis Pax – not accepted   Euphorbia hermanschwartzii Rauh – accepted   Euphorbia hermentiana Lem. – not accepted   Euphorbia hernandez-pachecoi Caball. – not accepted   Euphorbia hernariifolia Willd. – not accepted   Euphorbia herniarifolia Willd. – not accepted – herniaria-leaf spurge   Euphorbia herniariifolia Willd. – accepted – herniaria-leaf spurge   Euphorbia herniariifolia var. glaberrima Halácsy – accepted   Euphorbia herniariifolia var. hebecarpa Boiss. – not accepted   Euphorbia herniariifolia var. herniariifolia Willd. – accepted   Euphorbia herniarioides Nutt. – not accepted   Euphorbia herpetorrhiza Prokh. – not accepted   Euphorbia herrei A.C. White, R.A. Dyer & B. Sloane – accepted   Euphorbia herronii Riddell – not accepted   Euphorbia herteri Arechav. – accepted   Euphorbia herteri var. glabra Arechav. – not accepted   Euphorbia heteracantha Pax – not accepted   Euphorbia heteradena Jaub. & Spach – accepted   Euphorbia heteradena Boiss. & Buhse – not accepted   Euphorbia heterantha Nutt. – not accepted   Euphorbia heterochroma Pax – accepted   Euphorbia heterochroma ssp. heterochroma Pax – accepted   Euphorbia heterochroma ssp. tsavoensis S. Carter – accepted   Euphorbia heterochroma var. mitis (Pax) N.E. Br. – not accepted   Euphorbia heterodoxa Müll. Arg. – accepted   Euphorbia heterophylla L. – accepted – Mexican fireplant, painted euphorbia   Euphorbia heterophylla Desf. – not accepted   Euphorbia heterophylla f. cyathophora (Murray) Voss – not accepted   Euphorbia heterophylla f. hirticaulis Kuntze – not accepted   Euphorbia heterophylla var. barbellata (Engelm.) Holz. – not accepted   Euphorbia heterophylla var. brasiliensis Müll. Arg. – not accepted   Euphorbia heterophylla var. cyathophora (Murray) Griseb. – not accepted   Euphorbia heterophylla var. elliptica (Lam.) Kuntze – not accepted   Euphorbia heterophylla var. eriocarpa Millsp. – not accepted   Euphorbia heterophylla var. geniculata (Ortega) M. Gómez – not accepted   Euphorbia heterophylla var. genuina Boiss. – not accepted   Euphorbia heterophylla var. graminifolia Engelm. – not accepted   Euphorbia heterophylla var. linifolia Kuntze – not accepted   Euphorbia heterophylla var. minor Boiss. – not accepted   Euphorbia heteropoda Pax – accepted   Euphorbia heteropoda var. formosa (P.R.O. Bally) Bruyns – accepted   Euphorbia heteropoda var. heteropoda Pax – accepted   Euphorbia heterospina S. Carter – accepted   Euphorbia heterospina ssp. baringoensis S. Carter – accepted   Euphorbia heterospina ssp. heterospina S. Carter – accepted   Euphorbia hexadenia Denis – accepted   Euphorbia hexagona Nutt. ex Spreng. – accepted – sixangle spurge, six-angle spurge   Euphorbia hexagonoides S. Watson – accepted   Euphorbia heyligersiana P.I. Forst. – accepted   Euphorbia heyneana Spreng. – accepted   Euphorbia heyneana ssp. galioides (Boiss.) Panigrahi – accepted   Euphorbia heyneana ssp. heyneana Spreng. – accepted   Euphorbia heyneana ssp. nilagirica (Miq.) Panigrahi – accepted   Euphorbia heyneana var. scindica Boiss. – not accepted   Euphorbia hiberna Welw. ex Nyman – not accepted   Euphorbia hiberna Lepech. – not accepted   Euphorbia hibernica Spreng. – not accepted   Euphorbia hiernii (Croizat) Oudejans – accepted   Euphorbia hieroglyphica Coss. & Durieu ex Boiss. – accepted   Euphorbia hieroglyphica Correll – not accepted   Euphorbia hieronymi Subils – accepted   Euphorbia hieronymi f. parvifolia (Hieron.) Oudejans – not accepted   Euphorbia hierosolymitana Boiss. – accepted   Euphorbia hierosolymitana var. hierosolymitana Boiss. – accepted   Euphorbia hierosolymitana var. ramanensis (Baum) Zohary – accepted   Euphorbia hillebrandii H. Lév. – not accepted   Euphorbia hillebrandii var. palikeana O. Deg. & Sherff ex Sherff – not accepted   Euphorbia hillebrandii var. typica Sherff – not accepted   Euphorbia hillebrandii var. waimanoana Sherff – not accepted   Euphorbia himalayensis (Klotzsch) Boiss. – accepted   Euphorbia hindsiana Benth. – accepted   Euphorbia hinkleyorum I.M. Johnst. – accepted   Euphorbia hintonii L.C. Wheeler – accepted   Euphorbia hippocrepica Hemsl. – not accepted   Euphorbia hirsuta L. – accepted   Euphorbia hirsuta (Torr.) Wiegand – not accepted   Euphorbia hirsuta Kit. ex Boiss. – not accepted   Euphorbia hirsuta f. crispata (Willd. ex Hornem.) Oudejans – not accepted   Euphorbia hirsuta f. glabrescens (St.-Lag.) Oudejans – not accepted   Euphorbia hirsuta f. integrifolia (Deysson) Oudejans – not accepted   Euphorbia hirsuta f. laevis (Merino) Oudejans – not accepted   Euphorbia hirsuta f. serrata (Lojac.) Oudejans – not accepted   Euphorbia hirsuta f. serrulatifolia (Deysson) Oudejans – not accepted   Euphorbia hirsuta f. subglabra (Gren. & Godr.) Oudejans – not accepted   Euphorbia hirsuta var. leucotricha (Boiss.) Oudejans – not accepted   Euphorbia hirsuta var. subglabra (Gren. & Godr.) Nebot, De la Torrek, Mateo & Alcaraz – not accepted   Euphorbia hirta L. – accepted – pillpod sandmat, pillpod spurge, asthma spurge   Euphorbia hirta var. destituta L.C. Wheeler – not accepted   Euphorbia hirta var. glaberrima Koidz. – not accepted   Euphorbia hirta var. nocens L.C. Wheeler – not accepted   Euphorbia hirta var. ophthalmica (Pers.) Allem & Irgang – not accepted   Euphorbia hirta var. procumbens (Boiss.) N.E. Br. – not accepted   Euphorbia hirta var. typica L.C. Wheeler – not accepted   Euphorbia hirtella Boiss. – accepted   Euphorbia hirtella var. brevifolia Müll. Arg. – not accepted   Euphorbia hirtella var. genuina Müll. Arg. – not accepted   Euphorbia hirtella var. longifolia Müll. Arg. – not accepted   Euphorbia hirtella var. pusilla Müll. Arg. – not accepted   Euphorbia hirtula Engelm. ex S. Watson – not accepted   Euphorbia hislopii N.E. Br. – not accepted   Euphorbia hispida Boiss. – accepted   Euphorbia hissarica Lipsky ex Prokh. – not accepted   Euphorbia hochstetteriana Pax – not accepted   Euphorbia hockii De Wild. – accepted   Euphorbia hoffmanniana (Klotzsch & Garcke) Boiss. – accepted   Euphorbia hofstaetteri Rauh – accepted   Euphorbia hohenackeri Hochst. ex Boiss. – not accepted   Euphorbia hohenackeri Orph. ex Boiss. – not accepted   Euphorbia holmesiae Lavranos – accepted   Euphorbia holochlorina Rizzini – accepted   Euphorbia holstii Pax – not accepted   Euphorbia holstii var. hebecarpa Pax – not accepted   Euphorbia homophylla Lange ex Schrank – not accepted   Euphorbia hondurana Standl. & L.O. Williams – not accepted   Euphorbia hookeri Steud. – not accepted   Euphorbia hookeri var. integrifolia Hillebr. – not accepted   Euphorbia hookeri var. typica Sherff – not accepted   Euphorbia hooveri L.C. Wheeler – accepted – Hoover's sandmat   Euphorbia hormorrhiza Radcl.-Sm. – accepted   Euphorbia horombensis Ursch & Leandri – accepted   Euphorbia horrida Boiss. – not accepted   Euphorbia horrida ssp. noorsveldensis A.C. White, R.A. Dyer & B. Sloane – not accepted   Euphorbia horrida var. major A.C. White, R.A. Dyer & B. Sloane – not accepted   Euphorbia horrida var. striata A.C. White, R.A. Dyer & B. Sloane – not accepted   Euphorbia hortensis Engelm. ex Boiss. – not accepted   Euphorbia horwoodii S. Carter & Lavranos – accepted   Euphorbia hottentota Marloth – accepted   Euphorbia howellii L.C. Wheeler – not accepted   Euphorbia hsinchuensis (S.C. Lin & S.M. Chaw) C.Y. Wu & J.S. Ma – accepted   Euphorbia huanchahana (Klotzsch & Garcke) Boiss. – accepted   Euphorbia huanchahana ssp. huanchahana (Klotzsch & Garcke) Boiss. – accepted   Euphorbia huanchahana ssp. penazuelensis Croizat – accepted   Euphorbia huanchahana ssp. typica Croizat – not accepted   Euphorbia huanchahana var. peperomioides Croizat – not accepted   Euphorbia hubertii Pax – accepted   Euphorbia huillensis Pax – not accepted   Euphorbia humayensis Brandegee – accepted   Euphorbia humbertiana Maire – not accepted   Euphorbia humbertii Denis – accepted   Euphorbia humboldtii Willd. – not accepted   Euphorbia humifusa Willd. – accepted   Euphorbia humifusa f. glabra (Thell.) S.Z. Liou – not accepted   Euphorbia humifusa f. pilosa (Thell.) S.Z. Liou – not accepted   Euphorbia humifusa var. glabra Thell. – not accepted   Euphorbia humifusa var. pilosa Thell. – not accepted   Euphorbia humifusa var. pseudochamaesyce (Fisch. & C.A. Mey.) Murata – not accepted   Euphorbia humilis Ledeb. – accepted   Euphorbia humilis Royle – not accepted   Euphorbia humistrata Engelm. ex A. Gray – accepted – spreading sandmat   Euphorbia hunzikeri Subils – accepted   Euphorbia hurusawae Oudejans – not accepted   Euphorbia hurusawae var. imaii (Hurus.) Oudejans – not accepted   Euphorbia huttonae N.E. Br. – accepted   Euphorbia hyberna L. – accepted   Euphorbia hyberna ssp. canuti (Parl.) Tutin – accepted   Euphorbia hyberna ssp. gibelliana (Peola) Raffaelli – accepted   Euphorbia hyberna ssp. hyberna L. – accepted   Euphorbia hyberna ssp. insularis (Boiss.) Briq. – accepted   Euphorbia hydnorae E. Mey. ex Boiss. – not accepted   Euphorbia hylonoma Hand.-Mazz. – accepted   Euphorbia hypericifolia L. – accepted – graceful sandmat   Euphorbia hypericifolia var. bracteolaris (Boiss.) Ewart – not accepted   Euphorbia hypericifolia var. coimbatorensis Chandrab. – not accepted   Euphorbia hypericifolia var. communis Engelm. – not accepted   Euphorbia hypericifolia var. falciformis Klotzsch – not accepted   Euphorbia hypericifolia var. hirsuta Torr. – not accepted   Euphorbia hypericifolia var. maculata Klotzsch – not accepted   Euphorbia hypericifolia var. pusilla Webb – not accepted   Euphorbia hypogaea Marloth – accepted   Euphorbia hypoleuca (Prokh.) Rech. – not accepted   Euphorbia hyrcana Grossh. – accepted   Euphorbia hyssopifolia L. – accepted – hyssopleaf sandmat   Euphorbia hyssopifolia var. blanchetii (Miq. ex Boiss.) Oudejans – not accepted   Euphorbia hyssopifolia var. paraguayensis (Chodat) Oudejans – not accepted   Euphorbia hyssopifolia var. pruinosa (Chodat) Oudejans – not accepted   Euphorbia hyssopifolia var. pubescenticocca Christenh. – not accepted   Euphorbia hyssopifolia var. pulchella (Kunth) Oudejans – not accepted   Euphorbia hyssopifolia var. uniflora (Chodat & Hassl.) Oudejans – not accepted   Euphorbia hystrix Jacq. – not accepted   Euphorbia iancannellii Bruyns – accepted   Euphorbia iberica Boiss. – accepted   Euphorbia iberica var. intermedia Boiss. – not accepted   Euphorbia idzuensis Nakai ex Hurus. – not accepted   Euphorbia iharanae Rauh – accepted   Euphorbia illirica Lam. – accepted   Euphorbia illirica ssp. semivillosa (Prokh.) Govaerts – not accepted   Euphorbia iloitaii Powys & S. Carter – accepted   Euphorbia imaii Hurus. – not accepted   Euphorbia imaii f. denudata Hurus. – not accepted   Euphorbia imbricata Vahl – not accepted   Euphorbia imbricata E.A. Bruce – not accepted   Euphorbia imbricata Sessé & Moç. – not accepted   Euphorbia imerina Cremers – accepted   Euphorbia imitata N.E. Br. – accepted   Euphorbia immersa P.R.O. Bally & S. Carter – accepted – Denegu   Euphorbia imparispina S. Carter – accepted   Euphorbia imperfoliata Vis. – accepted   Euphorbia impervia A. Berger – not accepted   Euphorbia implexa Stapf – not accepted   Euphorbia impressa Chiov. – accepted   Euphorbia inaequalis N.E. Br. – not accepted   Euphorbia inaequilatera Sond. – accepted   Euphorbia inaequilatera var. dentata (N.E. Br.) M.G. Gilbert – not accepted   Euphorbia inaequilatera var. jemenica (Schweinf.) Oudejans – not accepted   Euphorbia inaequilatera var. perennis N.E. Br. – not accepted   Euphorbia inaequilatera var. spanothrix S. Carter – not accepted   Euphorbia inaequispina N.E. Br. – accepted   Euphorbia inaguaensis Oudejans – accepted   Euphorbia inappendiculata Domin – accepted   Euphorbia inappendiculata var. queenslandica Domin – not accepted   Euphorbia inarticulata Schweinf. – accepted   Euphorbia incana Schur – not accepted   Euphorbia incerta Brandegee – accepted   Euphorbia incisa Engelm. – not accepted – Mojave spurge   Euphorbia incisa var. incisa Engelm. – not accepted – Mojave spurge   Euphorbia incisa var. mollis (Norton) L.C. Wheeler – not accepted – Mojave spurge   Euphorbia inclinata Boiss. – not accepted   Euphorbia incompta Ces. – not accepted   Euphorbia inconspicua Ball – not accepted   Euphorbia inculta P.R.O. Bally – accepted   Euphorbia incurva N.E. Br. – not accepted   Euphorbia indecora N.E. Br. – accepted   Euphorbia inderiensis Less. ex Kar. & Kir. – accepted   Euphorbia indica Lam. – accepted   Euphorbia indica var. angustifolia Boiss. – not accepted   Euphorbia indica var. pubescens Pax – not accepted   Euphorbia indistincta P.I. Forst. – accepted   Euphorbia indivisa (Engelm.) Tidestr. – accepted – royal sandmat   Euphorbia indurescens L.C. Leach – accepted   Euphorbia inelegans N.E. Br. – not accepted   Euphorbia inermis Mill. – accepted   Euphorbia inermis Pancic ex Boiss. – not accepted   Euphorbia inermis var. huttonae A.C. White, R.A. Dyer & B. Sloane – not accepted   Euphorbia inermis var. laniglans N.E. Br. – not accepted   Euphorbia infausta N.E. Br. – not accepted   Euphorbia infernidialis V.W. Steinm. – accepted   Euphorbia infesta Pax – not accepted   Euphorbia inflexa Urb. & Ekman – accepted   Euphorbia ingallsii (Small) Cory – not accepted   Euphorbia ingens E. Mey. ex Boiss. – accepted   Euphorbia ingenticapsa L.C. Leach – accepted   Euphorbia innocua L.C. Wheeler – accepted – velvet spurge   Euphorbia inornata (Dressler) Radcl.-Sm. – not accepted   Euphorbia insarmentosa P.G. Mey. – accepted   Euphorbia insulae-europae Pax – not accepted   Euphorbia insulana Vell. – accepted   Euphorbia insulana ssp. insulana Vell. – accepted   Euphorbia insulana ssp. pilcomayensis Croizat – accepted   Euphorbia insulana ssp. tovarensis (Boiss.) Croizat – accepted   Euphorbia insulana ssp. typica Croizat – not accepted   Euphorbia insulana var. minor Müll. Arg. – not accepted   Euphorbia insulana var. pilcomayensis (Croizat) Oudejans – not accepted   Euphorbia insulana var. tovarensis (Boiss.) Oudejans – not accepted   Euphorbia insularis Boiss. – not accepted   Euphorbia interaxillaris Fernald – not accepted   Euphorbia intercedens Pax – not accepted   Euphorbia intermedia Bréb. – not accepted   Euphorbia intermedia Fisch. & C.A. Mey. ex Boiss. – not accepted   Euphorbia intermedia Hochst. ex Boiss. – not accepted   Euphorbia intermixta S. Watson – not accepted   Euphorbia intisy Drake – accepted   Euphorbia intricata S. Carter – accepted   Euphorbia inundata Torr. ex Chapm. – accepted – Florida pineland spurge   Euphorbia inundata var. garrettii E.L. Bridges & Orzell – accepted – Florida pineland spurge   Euphorbia inundata var. inundata Torr. ex Chapm. – accepted – Florida pineland spurge   Euphorbia inundaticola L.C. Leach – accepted   Euphorbia invaginata Croizat – accepted   Euphorbia invenusta (N.E. Br.) Bruyns – accepted   Euphorbia invenusta var. angusta (P.R.O. Bally) Bruyns – accepted   Euphorbia invenusta var. invenusta (N.E. Br.) Bruyns – accepted   Euphorbia involucrata (Klotzsch & Garcke) Boiss. – not accepted   Euphorbia involucrata var. megastegia Boiss. – not accepted   Euphorbia involuta Millsp. – not accepted   Euphorbia ipecacuanhae L. – accepted – American ipecac, Carolina ipecac   Euphorbia ipecacuanhae f. linearis (Moldenke) Fernald – not accepted   Euphorbia ipecacuanhae var. gracilis Boiss. – not accepted   Euphorbia ipecacuanhae var. portulacoides Boiss. – not accepted   Euphorbia iranshahri Pahlevani – accepted   Euphorbia irgisensis Litv. – accepted   Euphorbia isacantha Pax – accepted   Euphorbia isalensis Leandri – accepted   Euphorbia isatidifolia Lam. – accepted   Euphorbia isatis Pers. – not accepted   Euphorbia isaurica M.S. Khan – accepted   Euphorbia isophylla Bornm. – not accepted   Euphorbia ispahanica Boiss. – not accepted   Euphorbia issykkulensis Prokh. – not accepted   Euphorbia isthmia Täckh. – not accepted   Euphorbia italica Lam. – not accepted   Euphorbia italica Salzm. ex Boiss. – not accepted   Euphorbia italica G. Tineo – not accepted   Euphorbia iteophylla Boiss. – not accepted   Euphorbia itremensis Kimnach & Lavranos – accepted   Euphorbia ivanjohnstonii M.C. Johnst. – accepted   Euphorbia ixtlana Huft – accepted   Euphorbia jablonskii V.W. Steinm. – accepted   Euphorbia jacquemontii Boiss. – accepted   Euphorbia jacquemontii var. jacquemontii Boiss. – accepted   Euphorbia jacquemontii var. lasiocarpa Boiss. – accepted   Euphorbia jacquinii Fenzl ex Boiss. – accepted   Euphorbia jacquiniiflora Hook. – not accepted   Euphorbia jacquiniiflora Neumann – not accepted   Euphorbia jaegeri V.W. Steinm. & J. André – accepted   Euphorbia jaegeriana Pax – not accepted   Euphorbia jaliscensis B.L. Rob. & Greenm. – accepted   Euphorbia jaliscensis var. durangensis Millsp. – not accepted   Euphorbia jamesonii Boiss. – accepted   Euphorbia jansenvillensis Nel – accepted   Euphorbia japonica Siebold ex Boiss. – not accepted   Euphorbia japonica Zoll. ex Boiss. – not accepted   Euphorbia japygica Ten. – not accepted   Euphorbia jaroslavii Poljakov – not accepted   Euphorbia jasiewiczii (Chrtek & Krísa) Radcl.-Sm. – not accepted   Euphorbia jatrophoides Pax – accepted   Euphorbia javanica Jungh. – not accepted   Euphorbia jaxartica (Prokh.) Krylov – accepted   Euphorbia jejuna M.C. Johnst. & Warnock – accepted – dwarf sandmat, dwarf broomspurge   Euphorbia jenisseiensis Baikov – accepted   Euphorbia jessonii Oudejans – not accepted   Euphorbia jodhpurensis Blatt. & Hallb. – accepted   Euphorbia johannis S. Carter – accepted   Euphorbia johnsonii N.E. Br. – not accepted   Euphorbia johnstonii Mayfield – accepted   Euphorbia jolkinii Boiss. – accepted   Euphorbia jolkinii f. insularis (Hurus.) Oudejans – not accepted   Euphorbia jonesii Millsp. – not accepted   Euphorbia josei Oudejans – not accepted – Jose spurge   Euphorbia jovetii Huguet – not accepted   Euphorbia joyae P.R.O. Bally & S. Carter – accepted   Euphorbia jubata L.C. Leach – accepted   Euphorbia juncea Aiton – not accepted   Euphorbia junciformis Sessé & Moç. – not accepted   Euphorbia juncoides (Haw.) Sweet – not accepted   Euphorbia juniperifolia Rich. ex Boiss. – not accepted   Euphorbia juttae Dinter – accepted   Euphorbia kabridarensis Thulin – accepted   Euphorbia kadapensis Sarojin. & R.R.V. Raju – accepted   Euphorbia kaessneri Pax – accepted   Euphorbia kaessneri (N.E. Br.) Bruyns – not accepted   Euphorbia kahirensis Raeusch. – not accepted   Euphorbia kalaharica Marloth – not accepted   Euphorbia kaleniczenkii Czern. – not accepted   Euphorbia kalisana S. Carter – accepted   Euphorbia kamerunica Pax – accepted   Euphorbia kamponii Rauh & Petignat – accepted   Euphorbia kanalensis Boiss. – accepted   Euphorbia kanaorica Boiss. – accepted   Euphorbia kangdingensis W.T. Wang – not accepted   Euphorbia kangdingensis var. puberula W.T. Wang – not accepted   Euphorbia kansuensis Prokh. – accepted   Euphorbia kansui S.L. Liou ex S.B. Ho – accepted   Euphorbia kaokoensis (A.C. White, R.A. Dyer & B. Sloane) L.C. Leach – accepted   Euphorbia karibensis S. Carter – accepted   Euphorbia karoi Freyn – not accepted   Euphorbia karroensis (Boiss.) N.E. Br. – accepted   Euphorbia karwinskyi Boiss. – not accepted   Euphorbia kaschgarica Regel – not accepted   Euphorbia katrajensis Gage – accepted   Euphorbia kazerouni Parsa – not accepted   Euphorbia keithii R.A. Dyer – accepted   Euphorbia kelleri Pax – accepted   Euphorbia kelleri var. kelleri Pax – accepted   Euphorbia kelleri var. latifolia Pax – accepted   Euphorbia kemulariae Ter-Chatsch. – not accepted   Euphorbia kerneri Huter ex A. Kern. – accepted   Euphorbia kerrii Craib – not accepted   Euphorbia kerstingii Pax – accepted   Euphorbia khasyana Boiss. – accepted   Euphorbia khorasanica Saeidi & Ghayorm. – accepted   Euphorbia kibwezensis N.E. Br. – not accepted   Euphorbia kilimandscharica Pax ex Engl. – not accepted   Euphorbia kilwana N.E. Br. – accepted   Euphorbia kimberleyana (G. Will.) Bruyns – accepted   Euphorbia kimberleyensis B.G. Thomson – accepted   Euphorbia kimmerica Lipsky ex Grossh. – accepted   Euphorbia kingdon-wardii Binojk. & N.P. Balakr. – accepted   Euphorbia kirimzjulica Stepanov – accepted   Euphorbia kiritensis P.R.O. Bally & S. Carter – accepted   Euphorbia kirkii (N.E. Br.) Bruyns – accepted   Euphorbia kischenensis Vierh. – accepted   Euphorbia kitagawae (Hurus.) Kitag. – not accepted   Euphorbia klokoviana Railyan – not accepted   Euphorbia klokovii Dubovik – not accepted   Euphorbia klotzschiana Miq. – not accepted   Euphorbia klotzschii Oudejans – accepted   Euphorbia klotzschii var. argentina (Müll. Arg. ex Griseb.) Oudejans – not accepted   Euphorbia klotzschii var. dentata (R.E. Fr.) Oudejans – not accepted   Euphorbia klotzschii var. schizosepala (Engelm. ex Boiss.) Oudejans – not accepted   Euphorbia knobelii Letty – accepted   Euphorbia knuthii Pax – accepted   Euphorbia knuthii ssp. johnsonii (N.E. Br.) L.C. Leach – accepted   Euphorbia knuthii ssp. knuthii Pax – accepted   Euphorbia koerneriana Allem & Irgang – not accepted   Euphorbia komaroviana Prokh. – accepted   Euphorbia kondoi Rauh & Razaf. – accepted   Euphorbia kopetdaghensis Korovin ex Prokh. – not accepted   Euphorbia kopetdaghi (Prokh.) Prokh. – accepted   Euphorbia korovinii Pavlov – not accepted   Euphorbia korshinskyi Geltman – accepted   Euphorbia kotschyana Fenzl – accepted   Euphorbia kotschyana var. kotschyana Fenzl – accepted   Euphorbia kotschyana var. thyrsoidea Boiss. – accepted   Euphorbia kouandenensis Beille ex A. Chev. – accepted   Euphorbia kozlovii Prokh. – accepted   Euphorbia kozlovii var. angustifolia S.Q. Zhou – not accepted   Euphorbia kralickii Coss. ex Batt. & Trab. – not accepted   Euphorbia kraussiana Bernh. ex Krauss – accepted   Euphorbia kudrjaschevii (Pazij) Prokh. – accepted   Euphorbia kundelunguensis (Malaisse) Bruyns – accepted   Euphorbia kunzei Lehm. – not accepted   Euphorbia kurdica Boiss. – not accepted   Euphorbia kuriensis Vierh. – accepted   Euphorbia kurioca Bornm. – not accepted   Euphorbia kurtzii Subils – accepted   Euphorbia kuwaleana O. Deg. & Sherff – accepted – kokomalei   Euphorbia kwebensis N.E. Br. – not accepted   Euphorbia labatii Rauh & Bard.-Vauc. – accepted   Euphorbia labbei H. Lév. – not accepted   Euphorbia lacei Craib – accepted   Euphorbia lacera Boiss. – accepted   Euphorbia laciniata Panigrahi – accepted   Euphorbia laciniata ssp. burmanica Panigrahi – not accepted   Euphorbia lactea Haw. – accepted – mottled spurge   Euphorbia lactea Roxb. – not accepted   Euphorbia lactiflua Phil. – accepted   Euphorbia laeta Aiton – not accepted   Euphorbia laeta B. Heyne ex Roth – not accepted   Euphorbia laevigata Lam. – accepted   Euphorbia laevigata Vahl – not accepted   Euphorbia lagascae Spreng. – accepted   Euphorbia lagascae Spruner ex Nyman – not accepted   Euphorbia lagunensis Huft – accepted   Euphorbia lagunillarum Croizat – accepted   Euphorbia laikipiensis S. Carter – accepted   Euphorbia lamarckii Sweet – accepted   Euphorbia lamarckii f. latibracteata (G. Kunkel) Oudejans – not accepted   Euphorbia lamarckii ssp. regis-jubae (Webb & Berthel.) Oudejans – not accepted   Euphorbia lamarckii var. berthelotii (Bolle ex Boiss.) Oudejans – not accepted   Euphorbia lamarckii var. desfoliata (Menezes) Oudejans – not accepted   Euphorbia lamarckii var. pseudodendroides (H. Lindb.) Oudejans – not accepted   Euphorbia lambii Svent. – not accepted   Euphorbia lamprocarpa (Prokh.) Prokh. – accepted   Euphorbia lanata Sieber ex Spreng. – not accepted   Euphorbia lancasteriana Radcl.-Sm. – not accepted   Euphorbia lanceolaria Wall. – not accepted   Euphorbia lanceolata Spreng. – not accepted   Euphorbia lanceolata Larrañaga – not accepted   Euphorbia lanceolata Liou – not accepted   Euphorbia lanceolata Phil. – not accepted   Euphorbia lancifolia Schltdl. – accepted – ixbut   Euphorbia lancifolia var. villicaulis Fernald – not accepted   Euphorbia lanuginosa Lam. – not accepted   Euphorbia lanuginosa Thuill. – not accepted   Euphorbia laredana Millsp. – accepted – Laredo sandmat   Euphorbia larica Boiss. – accepted   Euphorbia laro Drake – not accepted   Euphorbia larranagae Oudejans – accepted   Euphorbia lasiocarpa Klotzsch – accepted – roadside sandmat   Euphorbia lasiocarpa K. Koch – not accepted   Euphorbia lasiocarpa var. subprostrata Boiss. – not accepted   Euphorbia lasiocaula Boiss. – not accepted   Euphorbia lasiocaula f. maritima (Hurus.) T. Kuros. & H. Ohashi – not accepted   Euphorbia lasiocaula var. ibukiensis (Hurus.) T. Kuros. & H. Ohashi – not accepted   Euphorbia lata Engelm. – accepted – hoary sandmat, broadleaf spurge   Euphorbia latazi Kunth – not accepted   Euphorbia latazi var. glabra Steyerm. – not accepted   Euphorbia latericolor Brandegee – not accepted   Euphorbia lateriflora Schumach. – accepted   Euphorbia lateriflora Jaub. & Spach – not accepted   Euphorbia lathyris L. – accepted – moleplant, cañamón purgante, gopher plant, caper spurge   Euphorbia lathyris Georgi – not accepted   Euphorbia lathyris var. minor Hook. & Arn. – not accepted   Euphorbia lathyrus L. – not accepted   Euphorbia latifolia C.A. Mey. ex Ledeb. – accepted   Euphorbia latifolia Boiss. – not accepted   Euphorbia latifolia Salzm. ex Boiss. – not accepted   Euphorbia latifolia var. intermedia Boiss. – not accepted   Euphorbia laurentii De Wild. – not accepted   Euphorbia laurifolia Juss. ex Lam. – accepted – Nonocta, noñocta, Lechero   Euphorbia lavicola S. Carter – accepted   Euphorbia lavranii L.C. Leach – accepted   Euphorbia lawsonii Binojk. & Dwarakan – accepted   Euphorbia laxiflora Kuntze – not accepted   Euphorbia leachii Lawant & van Veldh. – accepted   Euphorbia lecheoides Millsp. – accepted   Euphorbia lecheoides var. exumensis (Millsp.) Oudejans – accepted   Euphorbia lecheoides var. lecheoides Millsp. – accepted   Euphorbia lecheoides var. wilsonii (Millsp.) Oudejans – accepted   Euphorbia ledebourii Boiss. – not accepted   Euphorbia ledermanniana Pax & K. Hoffm. – accepted   Euphorbia ledienii A. Berger – accepted   Euphorbia lehmanniana Pax – not accepted   Euphorbia lehmbachii Pax – not accepted   Euphorbia leiococca (Engelm.) Norton – not accepted   Euphorbia leiosperma Sibth. & Sm. – not accepted   Euphorbia leiosperma (Klotzsch & Garcke) Boiss. – not accepted   Euphorbia leistneri R.H. Archer – accepted   Euphorbia lemaireana Boiss. – not accepted   Euphorbia lemesiana Hadjik., Hand, Christodoulou & Frajman – accepted   Euphorbia lenensis Baikov – accepted   Euphorbia lenewtonii S. Carter – accepted   Euphorbia leonardii (D.G. Burch) Radcl.-Sm. – accepted   Euphorbia leoncroizatii Oudejans – not accepted   Euphorbia leonensis N.E. Br. – not accepted   Euphorbia leontopoda S. Carter – accepted   Euphorbia lepidocarpa Pax – not accepted   Euphorbia leptalea S. Schauer – not accepted   Euphorbia leptocaula Boiss. – accepted   Euphorbia leptocaula var. praecox Boiss. – not accepted   Euphorbia leptocera Engelm. ex Boiss. – not accepted   Euphorbia leptocera Engelm. ex Torr. – not accepted   Euphorbia leptocera var. crenulata (Engelm.) Boiss. – not accepted   Euphorbia leptoclada Balf. f. – accepted   Euphorbia leptomyura Baill. ex Poiss. – not accepted   Euphorbia leptophylla Vill. – not accepted   Euphorbia leshumensis N.E. Br. – not accepted   Euphorbia letestuana (Denis) Bruyns – accepted   Euphorbia letestui J. Raynal – accepted   Euphorbia letouzeyana (Malaisse) Bruyns – accepted   Euphorbia leucantha (Klotzsch & Garcke) Boiss. – accepted   Euphorbia leucocephala Lotsy – accepted – pascuita   Euphorbia leucochlamys Chiov. – accepted   Euphorbia leucodendron Drake – not accepted   Euphorbia leucodendron ssp. oncoclada (Drake) Rauh & Koutnik – not accepted   Euphorbia leucoloma Raf. – not accepted   Euphorbia leuconeura Boiss. – accepted   Euphorbia leucophylla Benth. – accepted   Euphorbia leucophylla ssp. comcaacorum V.W. Steinm. & Felger – accepted   Euphorbia leucophylla ssp. leucophylla Benth. – accepted   Euphorbia leucotricha Boiss. – not accepted   Euphorbia leviana Croizat – not accepted   Euphorbia levis Poir. – not accepted   Euphorbia levis var. imbricata Boiss. – not accepted   Euphorbia libassii Lojac. – not accepted   Euphorbia lignosa Marloth – accepted   Euphorbia ligulata Chaub. – not accepted   Euphorbia ligustrina Boiss. – not accepted   Euphorbia liliputiana C. Wright ex Urb. – not accepted   Euphorbia limaensis Oudejans – not accepted   Euphorbia limpopoana L.C. Leach ex S. Carter – accepted   Euphorbia linaria Link – not accepted   Euphorbia linarifolia Willd. – not accepted   Euphorbia linariifolia Lam. – not accepted   Euphorbia linarioides Poir. – not accepted   Euphorbia lindeniana A. Rich. – not accepted   Euphorbia lindenii (S. Carter) Bruyns – accepted   Euphorbia lindheimeriana Engelm. ex Boiss. – not accepted   Euphorbia linearibracteata L.C. Leach – accepted   Euphorbia linearifolia Roth – not accepted   Euphorbia linearifolia var. nallamalayana J.L. Ellis – not accepted   Euphorbia linearis Retz. – accepted   Euphorbia linearis Schrank – not accepted   Euphorbia linearis B. Heyne ex Roth – not accepted   Euphorbia linearis var. heterophylla Kuntze – not accepted   Euphorbia lineata S. Watson – accepted   Euphorbia lingiana C. Shih – not accepted   Euphorbia linguiformis McVaugh – accepted   Euphorbia linguiformis var. actinadenia (McVaugh) Oudejans – not accepted   Euphorbia lingulata Heuff. – not accepted   Euphorbia linifolia Nath. ex L. – not accepted   Euphorbia linifolia Wall. ex Boiss. – not accepted   Euphorbia linifolia Burm. f. – not accepted   Euphorbia linifolia Vahl – not accepted   Euphorbia lioui C.Y. Wu & J.S. Ma – accepted   Euphorbia lipskyi (Prokh.) Prokh. – accepted   Euphorbia lissosperma S. Carter – accepted   Euphorbia literata Jacq. – not accepted   Euphorbia litoralis Kunth – not accepted   Euphorbia litoralis Sessé & Moç. – not accepted   Euphorbia litoralis Noë ex Nyman – not accepted   Euphorbia littorea Miq. ex Boiss. – not accepted   Euphorbia litwinowii Prokh. – not accepted   Euphorbia liukiuensis Hayata – accepted   Euphorbia livida E. Mey. ex Boiss. – accepted   Euphorbia lividiflora L.C. Leach – accepted   Euphorbia loandensis N.E. Br. – accepted   Euphorbia lockhartii Steud. – not accepted   Euphorbia lohaensis Baill. – not accepted   Euphorbia loiseleurii Rouy – not accepted   Euphorbia lombardensis Nel – not accepted   Euphorbia lomelii V.W. Steinm. – accepted   Euphorbia longibracteata DC. – not accepted   Euphorbia longibracteata Pax – not accepted   Euphorbia longicorniculata Kitam. – not accepted   Euphorbia longicornuta S. Watson – accepted   Euphorbia longicornuta Pax ex Engl. – not accepted   Euphorbia longicornuta var. pubescens N.E. Br. – not accepted   Euphorbia longicruris Scheele – accepted – wedgeleaf spurge, wedge-leaf spurge   Euphorbia longifolia Lam. – not accepted   Euphorbia longifolia D. Don – not accepted   Euphorbia longifolia Baill. ex Boiss. – not accepted   Euphorbia longifolia Gueldenst. – not accepted   Euphorbia longifolia var. canariensis (Boiss.) Oudejans – not accepted   Euphorbia longinsulicola S.R. Hill – accepted   Euphorbia longipetiolata Pax & K. Hoffm. – not accepted   Euphorbia longipetiolata M.E. Jones – not accepted   Euphorbia longipila Rusby – not accepted   Euphorbia longiradiata Lapeyr. – not accepted   Euphorbia longiramosa S. Watson – not accepted   Euphorbia longispina Chiov. – accepted   Euphorbia longistyla Boiss. – accepted   Euphorbia longituberculosa Hochst. ex Boiss. – accepted   Euphorbia lophiosperma S. Carter – accepted   Euphorbia lophogona Lam. – accepted   Euphorbia lophogona var. lophogona Lam. – accepted   Euphorbia lophogona var. tenuicaulis Rauh – accepted   Euphorbia lorentii Hochst. – not accepted   Euphorbia lorentzii Müll. Arg. – not accepted   Euphorbia loreyi Jord. – not accepted   Euphorbia loricata Lam. – accepted   Euphorbia lorifolia (A. Gray ex H. Mann) Hillebr. – not accepted   Euphorbia lorifolia var. gracilis Rock – not accepted   Euphorbia lottiae V.W. Steinm. – accepted   Euphorbia louisii Thiébaut – not accepted   Euphorbia louwii L.C. Leach – accepted   Euphorbia luapulana L.C. Leach – accepted   Euphorbia lucida Waldst. & Kit. – accepted – shining spurge   Euphorbia lucida f. angustifolia (Tausch) Slavík – not accepted   Euphorbia lucida f. leiocarpa (Tausch) Slavík – not accepted   Euphorbia lucida var. androsaemifolia (Haw.) Schur – not accepted   Euphorbia lucida var. angustifolia Tausch – not accepted   Euphorbia lucida var. esulolucida André – not accepted   Euphorbia lucida var. leiocarpa Tausch – not accepted   Euphorbia lucida var. salicifolia Wimm. & Grab. – not accepted   Euphorbia luciismithii B.L. Rob. & Greenm. – accepted   Euphorbia lucorum Rupr. – accepted   Euphorbia lucorum var. parvifolia H.L. Yang – not accepted   Euphorbia lugardiae (N.E. Br.) Bruyns – accepted   Euphorbia lugubris Chabert – not accepted   Euphorbia lukoseana S. Carter – accepted   Euphorbia lumbricalis L.C. Leach – accepted   Euphorbia lundelliana Croizat – accepted   Euphorbia lunulata Bunge – accepted   Euphorbia lupatensis N.E. Br. – accepted   Euphorbia lupulina Boiss. – not accepted   Euphorbia lurida Engelm. – accepted – San Francisco Mountain spurge, woodland spurge   Euphorbia lurida var. pringlei Norton – not accepted   Euphorbia lusitanica Steud. – not accepted   Euphorbia lutea Alam. ex Boiss. – not accepted   Euphorbia luteola Kralik – not accepted   Euphorbia luteoviridis D.G. Long – accepted   Euphorbia lutescens C.A. Mey. – not accepted   Euphorbia luticola Hand.-Mazz. – not accepted   Euphorbia lutosa S. Carter – accepted   Euphorbia lutulenta (Croizat) Oudejans – accepted   Euphorbia lutzenbergeriana Croizat – not accepted   Euphorbia luzoniensis Merr. – accepted   Euphorbia lycia Boiss. – not accepted   Euphorbia lycioides Boiss. – accepted   Euphorbia lyciopsis Pax – not accepted   Euphorbia lydenburgensis Schweick. & Letty – accepted   Euphorbia maackii Meinsh. – not accepted   Euphorbia macella N.E. Br. – not accepted   Euphorbia macgillivrayi Boiss. – accepted   Euphorbia macgillivrayi var. filipes (Benth.) Domin – not accepted   Euphorbia macgillivrayi var. micradenia (Boiss.) Domin – not accepted   Euphorbia macgillivrayi var. pseudoserrulata Domin – not accepted   Euphorbia macgillivrayi var. typica Domin – not accepted   Euphorbia macgillivrayi var. yarrabensis Domin – not accepted   Euphorbia machrisiae Steyerm. – accepted   Euphorbia maconochieana B.G. Thomson – accepted   Euphorbia macowanii N.E. Br. – not accepted   Euphorbia macra Hiern – accepted   Euphorbia macraulonia Phil. – accepted   Euphorbia macrocarpa Boiss. & Buhse – accepted   Euphorbia macroceras Fisch. & C.A. Mey. – accepted   Euphorbia macroclada Boiss. – accepted   Euphorbia macroclada var. aceras Hand.-Mazz. – not accepted   Euphorbia macrophylla Pax – accepted   Euphorbia macropodoides B.L. Rob. & Greenm. – accepted   Euphorbia macropus (Klotzsch & Garcke) Boiss. – accepted – Huachuca Mountain spurge   Euphorbia macrorhiza Ledeb. – accepted   Euphorbia macrostegia Boiss. – not accepted   Euphorbia macrostegia var. pauciradiata Bornm. – not accepted   Euphorbia maculata auct. non L. – not accepted   Euphorbia maculata L. – accepted – milk purslane, prostrate spurge, spotted spurge, spotted sandmat   Euphorbia maculata Lechl. ex Boiss. – not accepted   Euphorbia maculata var. detonsa Engelm. ex Boiss. – not accepted   Euphorbia maculata var. parvula Riddell – not accepted   Euphorbia macvaughii Carvajal & Lomelí – accepted   Euphorbia madagascariensis Comm. ex Lam. – not accepted   Euphorbia maddenii Boiss. – accepted   Euphorbia madinahensis Fayed & D. Al-Zahrani – accepted – Karath, Karathah   Euphorbia mafingensis (Hargreaves) Bruyns – accepted   Euphorbia magdalenae Benth. – accepted   Euphorbia maglicensis Rohlena – not accepted   Euphorbia magnicapsula S. Carter – accepted   Euphorbia magnicapsula var. lacertosa S. Carter – accepted   Euphorbia magnicapsula var. magnicapsula S. Carter – accepted   Euphorbia magnidens Haw. ex Salm.-Dyck – not accepted   Euphorbia magnifica (E.A. Bruce) Bruyns – accepted   Euphorbia mahabobokensis Rauh – accepted   Euphorbia mahafalensis Denis – accepted   Euphorbia mahafalensis var. mahafalensis Denis – accepted   Euphorbia mahafalensis var. xanthadenia (Denis) Leandri – accepted   Euphorbia mainiana Poiss. – accepted   Euphorbia mainty Denis ex Leandri – accepted   Euphorbia mairei H. Lév. – not accepted   Euphorbia mairei var. luteociliata W.T. Wang – not accepted   Euphorbia major (Pax) Bruyns – accepted   Euphorbia makallensis S. Carter – accepted   Euphorbia makinoi Hayata – accepted   Euphorbia malaca (Small) Little – not accepted   Euphorbia malachophylla Clarke – not accepted   Euphorbia malacitana Pau – not accepted   Euphorbia maleevii Tamamsch. – not accepted   Euphorbia maleolens E. Phillips – accepted   Euphorbia malevola L.C. Leach – accepted   Euphorbia malevola ssp. bechuanica L.C. Leach – not accepted   Euphorbia malleata Boiss. – accepted   Euphorbia malurensis Rech. f. – accepted   Euphorbia malvana Maire – accepted   Euphorbia mamfwensis (Malaisse & Lecron) Bruyns – accepted   Euphorbia mamillosa Lem. – not accepted   Euphorbia mammillaris L. – accepted   Euphorbia mananarensis Leandri – accepted   Euphorbia manca A. Nelson – not accepted   Euphorbia mancinella Baill. – not accepted   Euphorbia mandoniana Boiss. – accepted   Euphorbia mandravioky Leandri – accepted   Euphorbia mandshurica Maxim. – accepted   Euphorbia mangelsdorffii Rauh – accepted   Euphorbia mangletii Urb. – not accepted   Euphorbia mangokyensis Denis – accepted   Euphorbia mangorensis Leandri – accepted   Euphorbia maoershanensis F.N. Wei & J.S. Ma – accepted   Euphorbia marayensis Subils – accepted   Euphorbia maresii Knoche – accepted   Euphorbia maresii ssp. balearica (Willk.) Malag. – accepted   Euphorbia maresii ssp. maresii Knoche – accepted   Euphorbia margalidiana Kuhbier & Lewej. – accepted   Euphorbia margaretae S. Carter – accepted   Euphorbia marginata Pursh – accepted – snow on the mountain, snow-on-the-mountain, smoke-on-the-prairie, variegated spurge, whitemargined spurge   Euphorbia marginata Kunth – not accepted   Euphorbia marginata var. uloleuca Engelm. & A. Gray – not accepted   Euphorbia marianoi Oudejans – not accepted   Euphorbia marie-cladieae Rzepecky – accepted   Euphorbia marilandica Greene – not accepted   Euphorbia mariolensis Rouy – not accepted   Euphorbia maritae Rauh – accepted   Euphorbia maritima Nutt. – not accepted   Euphorbia maritima Willd. ex Boiss. – not accepted   Euphorbia marlothii Pax – not accepted   Euphorbia marrupana Bruyns – accepted   Euphorbia marsabitensis S. Carter – accepted   Euphorbia marschalliana Boiss. – accepted   Euphorbia marschalliana Kotschy ex Boiss. – not accepted   Euphorbia marschalliana ssp. armena (Prokh.) Oudejans – accepted   Euphorbia marschalliana ssp. marschalliana Boiss. – accepted   Euphorbia martinae Rauh – accepted   Euphorbia martiusiana Steud. – not accepted   Euphorbia maryrichardsiae G. Will. – accepted   Euphorbia masirahensis Ghaz. – accepted   Euphorbia massiliensis DC. – not accepted   Euphorbia matabelensis Pax – accepted   Euphorbia matritensis Boiss. – accepted   Euphorbia mauritanica L. – accepted   Euphorbia mauritanica Webb ex J. Gay – not accepted   Euphorbia mayana Millsp. – not accepted   Euphorbia mayfieldii V.W. Steinm. – accepted   Euphorbia maysillesii McVaugh – not accepted   Euphorbia mayuranathanii Croizat – accepted   Euphorbia mazandaranica Pahlevani – accepted   Euphorbia mazarronensis Esteve – not accepted   Euphorbia mazatlamensis Oudejans – not accepted   Euphorbia mazicum Emb. & Maire – accepted   Euphorbia mbaluensis Pax – not accepted   Euphorbia mcvaughiana M.C. Johnst. – accepted   Euphorbia mcvaughii M.C. Johnst. – not accepted   Euphorbia media N.E. Br. – not accepted   Euphorbia media var. bashawei N.E. Br. – not accepted   Euphorbia medicaginea Boiss. – accepted   Euphorbia medicaginea ssp. arsenariensis (Batt.) Batt. – not accepted   Euphorbia medicaginea var. arsenariensis Batt. – not accepted   Euphorbia medicaginea var. genuina Maire – not accepted   Euphorbia medicaginea var. oblongifolia Ball – not accepted   Euphorbia medusae Panz. – not accepted   Euphorbia meenae S. Carter – accepted   Euphorbia megalantha Boiss. – not accepted   Euphorbia megalantha var. denticulata Boiss. – not accepted   Euphorbia megalantha var. gracilis Boiss. – not accepted   Euphorbia megalantha var. hirtiflora Boiss. – not accepted   Euphorbia megalatlantica Ball – accepted   Euphorbia megalatlantica ssp. briquetii (Emb. & Maire) Losa & Vindt – not accepted   Euphorbia megalocarpa Rech. f. – accepted   Euphorbia meganaesos Featherman – accepted   Euphorbia megapolitana Henker & Kiesew. – accepted   Euphorbia megistopoda Diels – not accepted   Euphorbia mehadiensis Kit. – not accepted   Euphorbia melanacantha Drake – not accepted   Euphorbia melanadenia Torr. & A. Gray – accepted – prostrate spurge, red-gland spurge, squaw sandmat   Euphorbia melanadenia var. subinappendiculata Engelm. – not accepted   Euphorbia melanocarpa Boiss. – not accepted   Euphorbia melanohydrata Nel – accepted   Euphorbia melanohydrata ssp. conica Swanepoel – accepted   Euphorbia melanohydrata ssp. melanohydrata Nel – accepted   Euphorbia melanosticta E. Mey. ex Boiss. – not accepted   Euphorbia melapetala Gasp. ex Guss. – accepted   Euphorbia melapetala var. leiocarpa Guss. ex Boiss. – not accepted   Euphorbia melicae Ewest – accepted   Euphorbia melillensis Sennen & Mauricio – not accepted   Euphorbia melitensis Parl. – accepted   Euphorbia mellifera Aiton – accepted   Euphorbia mellifera Seub. – not accepted   Euphorbia mellifera var. canariensis Boiss. – not accepted   Euphorbia meloformis Aiton – accepted   Euphorbia meloformis f. falsa (N.E. Br.) Marx – not accepted   Euphorbia meloformis f. magna R.A. Dyer ex G. Marx – not accepted   Euphorbia meloformis ssp. meloformis Aiton – accepted   Euphorbia meloformis ssp. valida (N.E. Br.) G.D. Rowley – accepted   Euphorbia meloniformis Lem. – not accepted   Euphorbia membranacea Pax – not accepted   Euphorbia memoralis R.A. Dyer – accepted   Euphorbia mendax Maire & Wilczek – not accepted   Euphorbia mendezii Boiss. – accepted – Mendez's sandmat   Euphorbia menelikii Pax – not accepted   Euphorbia mercurialina Michx. – accepted – mercury spurge   Euphorbia mercurialis Pers. – not accepted   Euphorbia meridensis Pittier – not accepted   Euphorbia meridionalis P.R.O. Bally & S. Carter – accepted   Euphorbia merkeri N.E. Br. – not accepted   Euphorbia mertonii Fosberg – accepted   Euphorbia mesembrianthemifolia Jacq. – not accepted – coastal beach sandmat   Euphorbia mesembryanthemifolia Jacq. – accepted – Coastal beach sandmat   Euphorbia mesembryanthemifolia f. florida (Millsp.) Oudejans – not accepted   Euphorbia mesembryanthemifolia f. reclinata (Millsp.) Oudejans – not accepted   Euphorbia mesembryanthemifolia f. seminuda (Millsp.) Oudejans – not accepted   Euphorbia mesembryanthemifolia var. flexuosa (Kunth) Oudejans – not accepted   Euphorbia mesembryanthemifolia var. ramosissima (Millsp.) Oudejans – not accepted   Euphorbia mesopotamica M.S. Khan – not accepted   Euphorbia messeniaca Heldr. ex Halácsy – not accepted   Euphorbia meuleniana O. Schwartz – accepted   Euphorbia meuselii Geltman – not accepted   Euphorbia mexiae Standl. – accepted   Euphorbia mexicana (Engelm.) Norton – not accepted   Euphorbia meyeniana Klotzsch – accepted   Euphorbia meyeniana var. viscidula Boiss. – not accepted   Euphorbia meyeri Boiss. – not accepted   Euphorbia meyeri Steud. – not accepted   Euphorbia meyeri Nel – not accepted   Euphorbia meyeriana Galushko – not accepted   Euphorbia micans Scheele – not accepted   Euphorbia michaelii Thulin – accepted   Euphorbia micracantha Boiss. – accepted   Euphorbia micractina Boiss. – accepted   Euphorbia micractina var. tangutica (Prokh.) W.T. Wang – not accepted   Euphorbia micradenia Boiss. – not accepted   Euphorbia micrantha Stephan ex Willd. – not accepted   Euphorbia microappendiculata Lotsy – not accepted   Euphorbia microcarpa (Prokh.) Krylov – accepted   Euphorbia microcephala Boiss. – not accepted   Euphorbia microclada Urb. – not accepted   Euphorbia micromera Boiss. ex Engelm. – accepted – Sonoran sandmat, tiny sandmat, desert spurge   Euphorbia microphylla Lam. – not accepted   Euphorbia microphylla B. Heyne ex Roth – not accepted   Euphorbia microsciadia Boiss. – accepted   Euphorbia microsperma (Murb.) K. Malý – not accepted   Euphorbia microsphaera Boiss. – accepted   Euphorbia migiurtinorum Chiov. – accepted   Euphorbia milii Des Moul. – accepted – christplant   Euphorbia milii f. lutea Leandri – not accepted   Euphorbia milii var. bevilaniensis (Croizat) Ursch & Leandri – accepted   Euphorbia milii var. bosseri Rauh – not accepted   Euphorbia milii var. breoni Ursch & Leandri – not accepted   Euphorbia milii var. hislopii (N.E. Br.) Ursch & Leandri – accepted   Euphorbia milii var. imperatae Ursch & Leandri – not accepted   Euphorbia milii var. longifolia Rauh – accepted   Euphorbia milii var. milii Des Moul. – accepted   Euphorbia milii var. roseana Marn.-Lap. ex J.-P. Demoly – accepted   Euphorbia milii var. splendens (Bojer ex Hook.) Ursch & Leandri – accepted   Euphorbia milii var. tananarivae Leandri – not accepted   Euphorbia milii var. tenuispina Rauh & Razaf. – accepted   Euphorbia milii var. tulearensis Ursch & Leandri – accepted   Euphorbia milii var. vulcani Leandri – not accepted   Euphorbia millotii Ursch & Leandri – accepted   Euphorbia millspaughii V.W. Steinm. & P.E. Berry – accepted   Euphorbia minbuensis Gage – accepted   Euphorbia minima (Haw.) Mart. – not accepted   Euphorbia minuta Loscos & Pardo – accepted   Euphorbia minuta Phil. – not accepted   Euphorbia minuta ssp. minuta Loscos & Pardo – accepted   Euphorbia minuta ssp. moleroi P. Monts. & Ferrández – accepted   Euphorbia minutiflora N.E. Br. – not accepted   Euphorbia minutifolia Boiss. – not accepted   Euphorbia minutula Boiss. – accepted   Euphorbia minxianensis W.T. Wang – not accepted   Euphorbia miricornis Maire & Wilczek – not accepted   Euphorbia miscella L.C. Leach – not accepted   Euphorbia misella S. Watson – accepted   Euphorbia misera Benth. – accepted – cliff spurge   Euphorbia missurica Raf. – accepted – prairie spurge, prairie sandmat, Missouri spurge   Euphorbia missurica var. calcicola (Shinners) Waterf. – not accepted   Euphorbia missurica var. intermedia (Engelm.) L.C. Wheeler – not accepted   Euphorbia missurica var. missurica Raf. – not accepted – prairie spurge   Euphorbia missurica var. petaloidea (Engelm.) Dorn – not accepted   Euphorbia missurica var. typica L.C. Wheeler – not accepted   Euphorbia mitchelliana Boiss. – accepted   Euphorbia mitchelliana var. cairnsiana Domin – not accepted   Euphorbia mitchelliana var. dietrichiae Domin – not accepted   Euphorbia mitchelliana var. filifolia Domin – not accepted   Euphorbia mitchelliana var. glauca Benth. – not accepted   Euphorbia mitchelliana var. hirta Boiss. – not accepted   Euphorbia mitchelliana var. oblongifolia Boiss. – not accepted   Euphorbia mitchelliana var. obtusifolia Domin – not accepted   Euphorbia mitchelliana var. stenophylla Benth. – not accepted   Euphorbia mitchelliana var. typica Domin – not accepted   Euphorbia mitis Pax – not accepted   Euphorbia mitriformis P.R.O. Bally & S. Carter – accepted   Euphorbia mixta N.E. Br. – not accepted   Euphorbia mlanjeana L.C. Leach – accepted   Euphorbia mocinoi Oudejans – not accepted   Euphorbia modesta Boiss. – not accepted   Euphorbia moehringioides Pax – not accepted   Euphorbia moenchiana Steud. – not accepted   Euphorbia mohammerensis Boiss. – not accepted   Euphorbia mollis C.C. Gmel. – not accepted   Euphorbia momccoyae Lavranos – accepted   Euphorbia monacantha Pax – accepted   Euphorbia monadenioides M.G. Gilbert – accepted   Euphorbia monantha C. Wright ex Boiss. – accepted   Euphorbia monchiquensis Franco & P. Silva – not accepted   Euphorbia monensis (Millsp.) Urb. – not accepted   Euphorbia mongolica (Prokh.) Prokh. – accepted   Euphorbia monocephala Pax – not accepted   Euphorbia monocephala Baker ex Denis – not accepted   Euphorbia monocyathium (Prokh.) Prokh. – accepted   Euphorbia monostyla Prokh. – accepted   Euphorbia montana Engelm. – not accepted   Euphorbia montana var. gracilior Engelm. – not accepted   Euphorbia montana var. robusta Engelm. – not accepted   Euphorbia montana var. trifaris Norton – not accepted   Euphorbia monteiroi Hook. – accepted   Euphorbia monteiroi ssp. brandbergensis B. Nord. – accepted   Euphorbia monteiroi ssp. monteiroi Hook. – accepted   Euphorbia monteiroi ssp. ramosa L.C. Leach – accepted   Euphorbia montenegrina (Bald.) K. Malý – accepted   Euphorbia montereyana Millsp. – accepted   Euphorbia montevidensis Casar. ex Boiss. – not accepted   Euphorbia montevidensis Klotzsch ex Boiss. – not accepted   Euphorbia monticola Boiss. – not accepted   Euphorbia monticola Hochst. ex A. Rich. – not accepted   Euphorbia moratii Rauh – accepted   Euphorbia moratii var. antsingiensis Cremers – accepted   Euphorbia moratii var. bemarahensis Cremers – accepted   Euphorbia moratii var. moratii Rauh – accepted   Euphorbia moratii var. multiflora Rauh – accepted   Euphorbia morinii A. Berger – not accepted   Euphorbia morisoniana Klotzsch ex Seem. – not accepted   Euphorbia mosaica P.R.O. Bally & S. Carter – accepted   Euphorbia mosana Lej. – not accepted   Euphorbia mossambicensis (Klotzsch & Garcke) Boiss. – accepted   Euphorbia mossambicensis var. fischeri (Pax) N.E. Br. – not accepted   Euphorbia mossambicensis var. nyasica N.E. Br. – not accepted   Euphorbia mossamedensis N.E. Br. – accepted   Euphorbia mtolohensis Lodé – accepted   Euphorbia mucronata Lam. – not accepted   Euphorbia mucronata Lapeyr. – not accepted   Euphorbia mucronata Clarke – not accepted   Euphorbia mucronulata (Prokh.) Pavlov – accepted   Euphorbia muelleri Boiss. – accepted   Euphorbia mulemae Rendle – not accepted   Euphorbia multicaulis Thuill. – not accepted   Euphorbia multicaulis Engelm. – not accepted   Euphorbia multiceps A. Berger – accepted   Euphorbia multiclava P.R.O. Bally & S. Carter – accepted   Euphorbia multiflora Willd. ex Klotzsch – not accepted   Euphorbia multifolia A.C. White, R.A. Dyer & B. Sloane – accepted   Euphorbia multifoliosa M.E. Jones – not accepted   Euphorbia multiformis Gaudich. ex Hook. & Arn. – accepted – variable sandmat   Euphorbia multiformis Schur – not accepted   Euphorbia multiformis var. celastroides A. Gray – not accepted   Euphorbia multiformis var. haleakalana Sherff – not accepted   Euphorbia multiformis var. kaalana Sherff – not accepted   Euphorbia multiformis var. kapuleiensis O. Deg. & Sherff – not accepted   Euphorbia multiformis var. lorifolia A. Gray ex H. Mann – not accepted   Euphorbia multiformis var. manoana Sherff – not accepted   Euphorbia multiformis var. microphylla Boiss. – accepted – variable sandmat   Euphorbia multiformis var. mohihiensis Sherff – not accepted   Euphorbia multiformis var. multiformis Gaudich. ex Hook. & Arn. – accepted – variable sandmat   Euphorbia multiformis var. perdita Sherff – not accepted   Euphorbia multiformis var. sparsiflora (A. Heller) Sherff – not accepted   Euphorbia multiformis var. tenuior A. Gray ex H. Mann – not accepted   Euphorbia multiformis var. tomentella Boiss. – not accepted   Euphorbia multiformis var. typica Sherff – not accepted   Euphorbia multifurcata Rech. f., Aellen & Esfand. – not accepted   Euphorbia multinodis Urb. – accepted   Euphorbia multiradiata Pax & K. Hoffm. – not accepted   Euphorbia multiramosa Nel – not accepted   Euphorbia multiseta Benth. – accepted   Euphorbia mundii N.E. Br. – accepted   Euphorbia munizii Borhidi – accepted   Euphorbia muraltioides N.E. Br. – accepted   Euphorbia muricata Thunb. – accepted   Euphorbia muricata M. Bieb. – not accepted   Euphorbia muricata var. wilhelmsiana K. Koch – not accepted   Euphorbia murielii N.E. Br. – not accepted   Euphorbia murrayana J.M. Black – not accepted   Euphorbia muscicola Fernald – accepted   Euphorbia muscosa Ten. – not accepted   Euphorbia mwinilungensis L.C. Leach – accepted   Euphorbia myrioclada S. Carter – accepted   Euphorbia myrsinites L. – accepted – myrtle spurge, donkey tail, blue spurge, creeping spurge   Euphorbia myrsinites Pall. ex Ledeb. – not accepted   Euphorbia myrsinites ssp. litardierei Font Quer & Garcias Font – not accepted   Euphorbia myrsinites ssp. pontica (Prokh.) R. Turner – not accepted   Euphorbia myrsinites ssp. rechingeri (Greuter) Aldén – not accepted   Euphorbia myrtifolia Hook. & Arn. – not accepted   Euphorbia myrtifolia (L.) Lam. – not accepted   Euphorbia myrtillifolia L. – accepted   Euphorbia myrtilloides Schltdl. ex Klotzsch & Garcke – not accepted   Euphorbia myrtoides Boiss. – not accepted   Euphorbia nagleri (Klotzsch & Garcke) Boiss. – accepted   Euphorbia nagleri var. baliensis Boiss. – not accepted   Euphorbia nakaiana H. Lév. – not accepted   Euphorbia nakaii Hurus. – accepted   Euphorbia namaquensis N.E. Br. – accepted   Euphorbia namibensis Marloth – accepted   Euphorbia namuliensis Bruyns – accepted   Euphorbia namuskluftensis L.C. Leach – accepted   Euphorbia nana Royle – accepted   Euphorbia nana Klotzsch ex Boiss. – not accepted   Euphorbia napoides Pax – accepted   Euphorbia natalensis Bernh. ex Krauss – accepted   Euphorbia nayarensis V.W. Steinm. – accepted   Euphorbia ndurumensis P.R.O. Bally – not accepted   Euphorbia nealleyi J.M. Coult. & Fisher – not accepted   Euphorbia neapolitana Ten. – not accepted   Euphorbia nebrownii Merr. – not accepted   Euphorbia neglecta N.E. Br. – not accepted   Euphorbia negromontana N.E. Br. – accepted   Euphorbia neilmulleri M.C. Johnst. – accepted   Euphorbia nelii A.C. White, R.A. Dyer & B. Sloane – not accepted   Euphorbia nelsii Pax – not accepted   Euphorbia nelsonii Millsp. – not accepted   Euphorbia nematocypha Hand.-Mazz. – not accepted   Euphorbia nematocypha var. induta Hand.-Mazz. – not accepted   Euphorbia nemoralis Salisb. – not accepted   Euphorbia nemoralis Kit. – not accepted   Euphorbia nemoralis Darl. – not accepted   Euphorbia nenensis Hiern – not accepted   Euphorbia neoangolensis Bruyns – accepted   Euphorbia neoarborescens Bruyns – accepted   Euphorbia neobosseri (Rauh) Rauh – accepted   Euphorbia neobosseri var. itampolensis Rauh – accepted   Euphorbia neobosseri var. neobosseri (Rauh) Rauh – accepted   Euphorbia neocaledonica Boiss. – accepted   Euphorbia neocapitata Bruyns – accepted   Euphorbia neochamaeclada Bruyns – accepted   Euphorbia neococcinea Bruyns – accepted   Euphorbia neocrispa Bruyns – accepted   Euphorbia neocymosa Bruyns – accepted   Euphorbia neoerubescens Bruyns – not accepted   Euphorbia neogillettii Bruyns – accepted   Euphorbia neoglabrata Bruyns – accepted   Euphorbia neoglaucescens Bruyns – accepted   Euphorbia neogoetzei Bruyns – accepted   Euphorbia neogossweileri Bruyns – accepted   Euphorbia neogracilis Bruyns – accepted   Euphorbia neohalipedicola Bruyns – accepted   Euphorbia neohumbertii Boiteau – accepted   Euphorbia neohumbertii var. aureoviridiflora Rauh – not accepted   Euphorbia neokaessneri Bruyns – accepted   Euphorbia neomexicana Greene – not accepted   Euphorbia neomontana Bruyns – accepted   Euphorbia neoparviflora Bruyns – accepted   Euphorbia neopedunculata Bruyns – accepted   Euphorbia neopolycnemoides Pax & K. Hoffm. – accepted   Euphorbia neoreflexa Bruyns – accepted   Euphorbia neorubella Bruyns – accepted   Euphorbia neorugosa Bruyns – accepted   Euphorbia neospinescens Bruyns – accepted   Euphorbia neostapelioides Bruyns – not accepted   Euphorbia neostapelioides var. congesta Bruyns – not accepted   Euphorbia neostolonifera Bruyns – accepted   Euphorbia neovirgata Bruyns – accepted   Euphorbia neovolkensii Pax – not accepted   Euphorbia nepalensis Boiss. – not accepted   Euphorbia nephradenia Barneby – accepted – Paria spurge, Utah spurge   Euphorbia nereidum Jahand. & Maire – accepted   Euphorbia neriifolia L. – accepted – Indian spurgetree   Euphorbia neriifolia Roxb. – not accepted   Euphorbia nervosa Kit. – not accepted   Euphorbia nesemannii R.A. Dyer – accepted   Euphorbia nesiotica B.L. Rob. – not accepted   Euphorbia nesomii Mayfield – accepted   Euphorbia neutra A. Berger – not accepted   Euphorbia nevadensis Boiss. & Reut. – accepted   Euphorbia nevadensis ssp. aragonensis (Loscos & Pardo) O. Bolòs & Vigo – accepted   Euphorbia nevadensis ssp. bolosii Molero & Rovira – accepted   Euphorbia nevadensis ssp. nevadensis Boiss. & Reut. – accepted   Euphorbia nevadensis var. acutifolia (Lange) O. Bolòs & Vigo – not accepted   Euphorbia nevadensis var. aragonensis (Loscos & Pardo) O. Bolòs & Vigo – not accepted   Euphorbia nevadensis var. carpetana Pau ex Losa – not accepted   Euphorbia nevadensis var. granatensis Ladero & Valdés Berm. – not accepted   Euphorbia nicaeensis All. – accepted   Euphorbia nicaeensis f. latibracteata (Prodán) Kuzmanov – not accepted   Euphorbia nicaeensis f. varnensis (Velen.) Kuzmanov – not accepted   Euphorbia nicaeensis ssp. cadrilateri (Prodán) Kuzmanov – accepted   Euphorbia nicaeensis ssp. demnatensis (Coss. ex Batt. & Trab.) Breistr. – accepted   Euphorbia nicaeensis ssp. dobrogensis (Prodán) Kuzmanov – accepted   Euphorbia nicaeensis ssp. goldei (Prokh.) Greuter & Burdet – accepted   Euphorbia nicaeensis ssp. hispanica Degen & Hervier – not accepted   Euphorbia nicaeensis ssp. japygica (Ten.) Arcang. – not accepted   Euphorbia nicaeensis ssp. maleevii (Tamamsch.) Oudejans – not accepted   Euphorbia nicaeensis ssp. nicaeensis All. – accepted   Euphorbia nicaeensis ssp. prostrata (Fiori) Arrigoni – not accepted   Euphorbia nicaeensis ssp. stepposa (Zoz) Greuter & Burdet – not accepted   Euphorbia nicaeensis ssp. volgensis (Krysht.) Oudejans – accepted   Euphorbia nicaeensis var. hispanica (Degen & Hervier) Cuatrec. – accepted   Euphorbia nicaeensis var. japygica (Ten.) Nyman – not accepted   Euphorbia nicaeensis var. lasiocarpa (Boiss.) Radcl.-Sm. & Govaerts – accepted   Euphorbia nicaeensis var. nicaeensis All. – accepted   Euphorbia nicholasii Oudejans – accepted   Euphorbia niciciana Borbás ex Novák – accepted   Euphorbia nigrispina N.E. Br. – accepted   Euphorbia nigrispinoides M.G. Gilbert – accepted   Euphorbia nilagirica Miq. – not accepted   Euphorbia nipensis Carabia – not accepted   Euphorbia niqueroana Urb. – not accepted   Euphorbia nirurioides (Millsp.) Fawc. & Rendle – not accepted   Euphorbia nitens Trevir. – not accepted   Euphorbia nivulia Buch.-Ham. – accepted   Euphorbia nivulia var. helicothele (Lem.) Boiss. – not accepted   Euphorbia nocens (L.C. Wheeler) V.W. Steinm. – accepted   Euphorbia nodiflora Steud. – not accepted   Euphorbia nodosa Houtt. – accepted   Euphorbia nodosa N.E. Br. – not accepted   Euphorbia noeana Boiss. – not accepted   Euphorbia nogalensis (A. Hässl.) S. Carter – accepted   Euphorbia norfolkiana Boiss. – accepted   Euphorbia normannii Schmalh. ex Lipsky – accepted   Euphorbia nortoniana A. Nelson – not accepted   Euphorbia notadenia Boiss. & Hohen. – not accepted   Euphorbia notata Engelm. ex Boiss. – not accepted   Euphorbia notoptera Boiss. – accepted   Euphorbia novomexicana (Klotzsch & Garcke) L.C. Wheeler – not accepted   Euphorbia noxia Pax – accepted   Euphorbia nubica N.E. Br. – accepted   Euphorbia nubigena L.C. Leach – accepted   Euphorbia nubigena var. nubigena L.C. Leach – accepted   Euphorbia nubigena var. rutilans L.C. Leach – accepted   Euphorbia nuda (Velen.) Velen. – not accepted   Euphorbia nuda Lam. ex Pers. – not accepted   Euphorbia nudicaulis Chapm. – not accepted – Chapman's spurge   Euphorbia nudiflora Lam. – not accepted   Euphorbia nudiflora Jacq. – not accepted   Euphorbia nummularia Hook. f. – accepted   Euphorbia nummularia var. glabra B.L. Rob. & Greenm. – not accepted   Euphorbia nummulariifolia Willd. – not accepted   Euphorbia nurae P. Fraga & Rossello – accepted   Euphorbia nusbaumeri X. Aubriot & Lowry – accepted   Euphorbia nutans Lag. – accepted – eyebane, upright spotted spurge, nodding spurge   Euphorbia nutans var. glaberrima Thell. – not accepted   Euphorbia nuttallii (Engelm.) Small – not accepted   Euphorbia nyassae Pax – accepted   Euphorbia nyassae ssp. mentiens S. Carter – not accepted   Euphorbia nyikae Pax ex Engl. – accepted   Euphorbia nyikae var. neovolkensii (Pax) S. Carter – accepted   Euphorbia nyikae var. nyikae Pax ex Engl. – accepted   Euphorbia oahuensis Skottsb. – not accepted   Euphorbia oatesii Rolfe – accepted   Euphorbia oaxacana B.L. Rob. & Greenm. – accepted   Euphorbia obconica Bojer ex N.E. Br. – accepted   Euphorbia obcordata Balf. f. – accepted   Euphorbia obcordata Denis – not accepted   Euphorbia obesa Hook. f. – accepted   Euphorbia obesa ssp. obesa Hook. f. – accepted   Euphorbia obesa ssp. symmetrica (A.C. White, R.A. Dyer & B. Sloane) G.D. Rowley – accepted   Euphorbia obliqua F.A. Bauer ex Endl. – accepted   Euphorbia obliqua var. phyllanthoides (Boiss.) Boiss. – not accepted   Euphorbia obliquata Forssk. – not accepted   Euphorbia obliquifolia Kunze ex Boiss. – not accepted   Euphorbia obliterata Jacq. – not accepted   Euphorbia oblongata Griseb. – accepted – eggleaf spurge, oblong spurge, egg-leaf spurge   Euphorbia oblongata ssp. sessiliflora (Boiss.) Nyman – not accepted   Euphorbia oblongata var. oblongata Griseb. – accepted   Euphorbia oblongata var. sessiliflora Boiss. – accepted   Euphorbia oblongicaulis Baker – not accepted   Euphorbia oblongifolia (K. Koch) K. Koch – accepted   Euphorbia obovalifolia A. Rich. – not accepted   Euphorbia obovata Decne. – accepted   Euphorbia obscura Loisel. – not accepted   Euphorbia obscura Láng ex Rchb. – not accepted   Euphorbia obtusata Pursh – not accepted   Euphorbia obtusifolia Lam. – not accepted   Euphorbia obtusifolia Poir. – not accepted   Euphorbia obtusifolia f. barbaricensis Pedro – not accepted   Euphorbia obtusifolia f. latibracteata G. Kunkel – not accepted   Euphorbia obtusifolia f. sesimbrensis Pedro – not accepted   Euphorbia obtusifolia ssp. regis-jubae (Webb & Berthel.) Maire – not accepted   Euphorbia obtusifolia var. despoliata Menezes – not accepted   Euphorbia obtusifolia var. wildpretii Molero & Rovira – not accepted   Euphorbia occidentalis Drew – not accepted   Euphorbia occidentaustralica Radcl.-Sm. & Govaerts – accepted   Euphorbia occulta Klotzsch – not accepted   Euphorbia ocellata Durand & Hilg. – accepted – Contura Creek sandmat   Euphorbia ocellata ssp. arenicola (Parish) Oudejans – accepted – Contura Creek sandmat, Yellow-flowered sandmat   Euphorbia ocellata ssp. ocellata Durand & Hilg. – accepted – Contura Creek sandmat   Euphorbia ocellata ssp. rattanii (S. Watson) Oudejans – accepted – Rattan's sandmat   Euphorbia ocellata var. arenicola (Parish) Jeps. – not accepted   Euphorbia ocellata var. kirbyi J.T. Howell – not accepted   Euphorbia ocellata var. rattanii (S. Watson) L.C. Wheeler – not accepted   Euphorbia ocellata var. sulfurea (Millsp.) Jeps. – not accepted   Euphorbia ocellata var. typica L.C. Wheeler – not accepted   Euphorbia octoradiata H. Lév. & Vaniot – accepted   Euphorbia ocymoidea L. – accepted   Euphorbia ocymoidea var. barnesii (Millsp.) McVaugh – not accepted   Euphorbia ocymoidea var. subreniformis (S. Watson) McVaugh – not accepted   Euphorbia odontadenia Boiss. – not accepted – Segi Canyon spurge   Euphorbia odontophora S. Carter – accepted   Euphorbia odontophylla Willd. – not accepted   Euphorbia odontophylla Boiss. – not accepted   Euphorbia oerstediana (Klotzsch & Garcke) Boiss. – accepted – West Indian spurge   Euphorbia officinarum L. – accepted   Euphorbia officinarum Hochst. ex Boiss. – not accepted   Euphorbia officinarum ssp. beaumieriana (Hook. f. & Coss.) Vindt – accepted   Euphorbia officinarum ssp. echinus (Hook. f. & Coss.) Vindt – accepted   Euphorbia officinarum ssp. officinarum L. – accepted   Euphorbia officinarum var. beaumieriana (Hook. f. & Coss.) Maire – not accepted   Euphorbia officinarum var. genuina Maire – not accepted   Euphorbia officinarum var. hernandez-pachecoi (Caball.) Oudejans – not accepted   Euphorbia officinarum var. kolquall Willd. – not accepted   Euphorbia ogadenensis P.R.O. Bally & S. Carter – accepted   Euphorbia ohiotica Steud. & Hochst. ex Boiss. – not accepted   Euphorbia oidorrhiza Pojark. – accepted   Euphorbia oleifolia Pourr. – not accepted   Euphorbia oleifolia Gouan – not accepted   Euphorbia oleracea Pers. – not accepted   Euphorbia oligantha Boiss. – not accepted   Euphorbia oligoclada L.C. Leach – accepted   Euphorbia olivacea Small – not accepted   Euphorbia olowaluana Sherff – accepted – alpine sandmat   Euphorbia olowaluana var. gracilis (Rock) Sherff – not accepted   Euphorbia olowaluana var. lepidofolia O. Deg. & Sherff – not accepted   Euphorbia olowaluana var. typica Sherff – not accepted   Euphorbia omariana M.G. Gilbert – accepted   Euphorbia oncoclada Drake – not accepted   Euphorbia onoi Franch. & Sav. – not accepted   Euphorbia opaca Láng ex Rchb. – not accepted   Euphorbia operta Halford & W.K. Harris – accepted   Euphorbia ophiolitica (P.I. Forst.) Y. Yang – accepted   Euphorbia ophthalmica Pers. – accepted – Florida hammock sandmat   Euphorbia oppositifolia McVaugh – accepted   Euphorbia opuntioides Welw. ex Hiern – accepted   Euphorbia orabensis Dinter – not accepted   Euphorbia oranensis (Croizat) Subils – accepted   Euphorbia oraria F. Muell. ex Boiss. – not accepted   Euphorbia orbiculata Kunth – accepted   Euphorbia orbiculata Miq. – not accepted   Euphorbia orbiculata var. jawaharii Rajagopal & Panigrahi – not accepted   Euphorbia orbiculifolia S. Carter – accepted   Euphorbia orbifolia (Alain) Oudejans – accepted – Mona Island sandmat   Euphorbia oreophila Miq. – not accepted   Euphorbia oreophila var. pubescens Boiss. – not accepted   Euphorbia oreophila var. wightiana (Boiss.) Boiss. – not accepted   Euphorbia orientalis L. – accepted   Euphorbia orientalis (Boiss.) Velen. – not accepted   Euphorbia origanoides L. – accepted   Euphorbia orizabae Boiss. – accepted   Euphorbia orjeni Beck – accepted   Euphorbia ornata Stapf – not accepted   Euphorbia orobanchoides (P.R.O. Bally) Bruyns – accepted   Euphorbia orobanchoides var. calycina (P.R.O. Bally) Bruyns – accepted   Euphorbia orobanchoides var. orobanchoides (P.R.O. Bally) Bruyns – accepted   Euphorbia orphanidis Boiss. – accepted   Euphorbia orthoclada Baker – accepted   Euphorbia oschtenica Galushko – not accepted   Euphorbia osyridea Boiss. – accepted   Euphorbia osyridiformis Parsa – accepted   Euphorbia otjingandu Swanepoel – accepted   Euphorbia otjipembana L.C. Leach – accepted   Euphorbia ouachitana Mayfield – accepted   Euphorbia ovalifolia Kostel. – not accepted   Euphorbia ovalifolia (Engelm. ex Klotzsch) Boiss. – not accepted   Euphorbia ovalifolia var. argentina Müll. Arg. ex Griseb. – not accepted   Euphorbia ovalifolia var. dentata R.E. Fr. – not accepted   Euphorbia ovalifolia var. montevidensis Boiss. – not accepted   Euphorbia ovalifolia var. schizosepala Engelm. ex Boiss. – not accepted   Euphorbia ovalleana Phil. – accepted   Euphorbia ovata (E. Mey. ex Klotzsch & Garcke) Boiss. – accepted   Euphorbia ovata Larrañaga – not accepted   Euphorbia oxycoccoides Boiss. – accepted   Euphorbia oxyodonta Boiss. – accepted   Euphorbia oxyphylla Boiss. – accepted   Euphorbia oxystegia Boiss. – accepted   Euphorbia pachyceras Coss. ex Lacaita – not accepted   Euphorbia pachyclada S. Carter – accepted   Euphorbia pachypoda Urb. – not accepted   Euphorbia pachypodioides Boiteau – accepted   Euphorbia pachyrrhiza Kar. & Kir. – accepted   Euphorbia pachysantha Baill. – accepted   Euphorbia padifolia (L.) Guss. – not accepted   Euphorbia padifolia Brandegee – not accepted   Euphorbia paganorum A. Chev. – accepted   Euphorbia palatinata F. Zimmerm. ex Thell. & F. Zimmerm. – not accepted   Euphorbia pallasiana Turcz. ex Fisch. & E.H. Mey. – not accepted   Euphorbia pallasii Turcz. – not accepted   Euphorbia pallasii f. glaberrima (Maxim.) Kitag. – not accepted   Euphorbia pallasii var. glaberrima Maxim. – not accepted   Euphorbia pallasii var. komaroviana (Prokh.) Y.C. Zhu – not accepted   Euphorbia pallasii var. pilosa Regel – not accepted   Euphorbia pallens Dillwyn – not accepted   Euphorbia pallida Willd. – not accepted   Euphorbia palmeri Engelm. ex S. Watson – not accepted – wood spurge, woodland spurge   Euphorbia palmeri var. palmeri Engelm. ex S. Watson – not accepted – woodland spurge   Euphorbia palmeri var. peplofolia Norton – not accepted   Euphorbia palmeri var. subpubens (Engelm. ex S. Watson) L.C. Wheeler – not accepted – woodland spurge   Euphorbia palmyrena Mouterde – not accepted   Euphorbia paludicola McVaugh – not accepted   Euphorbia paludosa Rouy – not accepted   Euphorbia palustris L. – accepted – marsh spurge   Euphorbia palustris var. brinonense Cezard – not accepted   Euphorbia pamirica (Prokh.) Prokh. – accepted   Euphorbia pampeana Speg. – accepted   Euphorbia panacea Webb & Berthel. – not accepted   Euphorbia pancheri Baill. – accepted   Euphorbia pancicii Beck – accepted   Euphorbia pandurata Huber – not accepted   Euphorbia pandurifolia Roth – not accepted   Euphorbia paniculata Elliott – not accepted   Euphorbia paniculata Desf. – accepted   Euphorbia paniculata ssp. monchiquensis (Franco & P. Silva) Vicens, Molero & C. Blanché – accepted   Euphorbia paniculata ssp. paniculata Desf. – accepted   Euphorbia paniculata ssp. welwitschii (Boiss. & Reut.) Vicens, Molero & C. Blanché – accepted   Euphorbia panjutinii Grossh. – accepted   Euphorbia pannonica Host – accepted   Euphorbia pannonica f. kitaibelii Soó – not accepted   Euphorbia pantomalaca Standl. & Steyerm. – not accepted   Euphorbia papilionum S. Carter – accepted   Euphorbia papillaris (Boiss.) Raffaelli & Ricceri – accepted   Euphorbia papilligera Boiss. – not accepted   Euphorbia papillosa A. St.-Hil. – accepted   Euphorbia papillosa Pouzolz ex Gren. & Godr. – not accepted   Euphorbia papillosa var. cabrerae Subils – not accepted   Euphorbia papillosa var. erythrorrhiza (Klotzsch & Garcke) Subils – not accepted   Euphorbia papillosa var. minor A. St.-Hil. – not accepted   Euphorbia papillosicapsa L.C. Leach – accepted   Euphorbia paralias L. – accepted – sea spurge   Euphorbia paranensis Dusén – accepted   Euphorbia parannaquensis Blanco – not accepted   Euphorbia parasitica Pav. ex Boiss. – not accepted   Euphorbia parciflora Urb. – accepted   Euphorbia parciramulosa Schweinf. – accepted   Euphorbia paredonensis (Millsp.) Oudejans – accepted   Euphorbia parifolia N.E. Br. – accepted   Euphorbia parishii Greene – accepted – Parish's sandmat   Euphorbia parkeri Binojk. & N.P. Balakr. – accepted   Euphorbia parodii Oudejans – accepted   Euphorbia parryi Engelm. – accepted – Parry's sandmat, dune spurge   Euphorbia parva N.E. Br. – accepted   Euphorbia parvicaruncula D.C. Hassall – accepted   Euphorbia parviceps L.C. Leach – accepted   Euphorbia parvicyathophora Rauh – accepted   Euphorbia parviflora L. – accepted   Euphorbia parvifolia E. Mey. ex Boiss. – not accepted   Euphorbia parvifolia var. laxa Boiss. – not accepted   Euphorbia parvimamma Boiss. – not accepted   Euphorbia parvula Delile – not accepted   Euphorbia parvula K. Koch – not accepted   Euphorbia passa N.E. Br. – not accepted   Euphorbia patagonica Hieron. – not accepted   Euphorbia patellifera J.T. Howell – not accepted   Euphorbia patens Kit. – not accepted   Euphorbia patentispina S. Carter – accepted   Euphorbia patula Mill. – accepted   Euphorbia pauciflora Nutt. ex Seem. – not accepted   Euphorbia pauciflora Dufour – not accepted   Euphorbia paucifolia Klotzsch – not accepted   Euphorbia paucipila Urb. – not accepted   Euphorbia pauciradiata Blatt. – accepted   Euphorbia paui Lacaita ex Losa – not accepted   Euphorbia paulianii Ursch & Leandri – accepted   Euphorbia paxiana Dinter – not accepted   Euphorbia pearsonii N.E. Br. – not accepted   Euphorbia pectinata Albov – not accepted   Euphorbia pedemontana L.C. Leach – accepted   Euphorbia pedersenii Subils – accepted   Euphorbia pediculifera Engelm. – accepted – Carrizo Mountain sandmat   Euphorbia pediculifera var. abramsiana (L.C. Wheeler) Ewan – not accepted   Euphorbia pediculifera var. inornata Brandegee – not accepted   Euphorbia pediculifera var. involuta (Millsp.) I.M. Johnst. – not accepted   Euphorbia pediculifera var. linearifolia S. Watson – accepted   Euphorbia pediculifera var. minor Millsp. – not accepted   Euphorbia pediculifera var. pediculifera Engelm. – accepted   Euphorbia pediculifera var. typica L.C. Wheeler – not accepted   Euphorbia pedilanthoides Denis – accepted   Euphorbia pedroi Molero & Rovira – accepted   Euphorbia pedunculata Klotzsch ex Jabl. – not accepted   Euphorbia pedunculosa A. Rich. – not accepted   Euphorbia peganoides Boiss. – not accepted   Euphorbia pekinensis Rupr. – accepted   Euphorbia pekinensis f. denudata (Hurus.) Oudejans – not accepted   Euphorbia pekinensis f. sinanensis Hurus. – not accepted   Euphorbia pekinensis ssp. asoensis Kuros. & Ohashi – accepted   Euphorbia pekinensis ssp. fauriei (H. Lév. & Vaniot) Kuros. & Ohashi – not accepted   Euphorbia pekinensis ssp. pekinensis Rupr. – accepted   Euphorbia pekinensis var. acuminata Hurus. – not accepted   Euphorbia pekinensis var. hupehensis Hurus. – not accepted   Euphorbia pekinensis var. ibukiensis Hurus. – not accepted   Euphorbia pekinensis var. japonensis Makino – not accepted   Euphorbia pekinensis var. lasiocaula (Boiss.) Oudejans – not accepted   Euphorbia pekinensis var. onoi (Franch. & Sav.) Makino – not accepted   Euphorbia pekinensis var. pseudolucorum (Hurus.) Oudejans – not accepted   Euphorbia pekinensis var. sinanensis (Hurus.) Oudejans – not accepted   Euphorbia pekinensis var. subulatifolius (Hurus.) T.B. Lee – not accepted   Euphorbia pekinensis var. watanabei (Makino) Oudejans – not accepted   Euphorbia pellegrinii Leandri – accepted   Euphorbia peltata Roxb. – accepted   Euphorbia peltata Sessé & Moç. – not accepted   Euphorbia peltigera E. Mey. ex Boiss. – not accepted   Euphorbia penicillata (Millsp.) R.E. Schult. – not accepted   Euphorbia peninsularis I.M. Johnst. – accepted   Euphorbia pentadactyla Griseb. – accepted   Euphorbia pentagona Haw. – accepted   Euphorbia pentagona Royle – not accepted   Euphorbia pentagona Blanco – not accepted   Euphorbia pentagona Noronha – not accepted   Euphorbia pentlandii Boiss. – accepted   Euphorbia pentops Marloth ex A.C. White, R.A. Dyer & B. Sloane – accepted   Euphorbia peperomioides Boiss. – accepted   Euphorbia peplidion Engelm. – accepted – low spurge   Euphorbia peplis L. – accepted   Euphorbia peplofolia Engelm. ex Patt. – not accepted   Euphorbia peploides Gouan – not accepted   Euphorbia peploides Nutt. – not accepted   Euphorbia peplus L. – accepted – petty spurge   Euphorbia peplus var. maritima Boiss. – not accepted   Euphorbia peplus var. minima DC. – accepted   Euphorbia peplus var. minor Willd. – not accepted   Euphorbia peplus var. peploides (Gouan) Vis. – not accepted   Euphorbia peplus var. peplus L. – accepted   Euphorbia perangusta R.A. Dyer – accepted   Euphorbia perangustifolia S. Carter – accepted   Euphorbia perarmata S. Carter – accepted   Euphorbia perbracteata Gage – accepted   Euphorbia perennans (Shinners) Warnock & M.C. Johnst. – accepted – perennial sandmat, Terlingua spurge   Euphorbia pereskiifolia Houllet ex Baill. – accepted   Euphorbia perfoliata Scheutz – accepted   Euphorbia perforata Guss. – not accepted   Euphorbia perforata Tineo ex Lojac. – not accepted   Euphorbia pergamena Small – accepted – Southern Florida sandmat, rocklands spurge   Euphorbia pergracilis P.G. Mey. – accepted   Euphorbia peritropoides (Millsp.) V.W. Steinm. – accepted   Euphorbia perlignea McVaugh – accepted   Euphorbia perpera N.E. Br. – accepted   Euphorbia perplexa L.C. Leach – accepted   Euphorbia perplexa var. kasamana L.C. Leach – accepted   Euphorbia perplexa var. perplexa L.C. Leach – accepted   Euphorbia perrieri Drake – accepted   Euphorbia perrieri var. elongata Denis – accepted   Euphorbia perrieri var. perrieri Drake – accepted   Euphorbia perrottetii Jaub. & Spach – not accepted   Euphorbia persepolitana Boiss. – not accepted   Euphorbia persica Steven ex Boiss. – not accepted   Euphorbia persica C.A. Mey. ex Boiss. – not accepted   Euphorbia persistens R.A. Dyer – not accepted   Euphorbia persistentifolia L.C. Leach – accepted   Euphorbia personata (Croizat) V.W. Steinm. – accepted   Euphorbia peruviana L.C. Wheeler – accepted   Euphorbia pervilleana Baill. – accepted   Euphorbia pervittata S. Carter – accepted   Euphorbia pestalozzae Boiss. – accepted   Euphorbia petala Ewart & L.R. Kerr – not accepted   Euphorbia petaloidea Engelm. – not accepted   Euphorbia petaloidea var. flagelliformis Engelm. – not accepted   Euphorbia petaloidea var. intermedia Engelm. – not accepted   Euphorbia petaloidea var. nicolletii Engelm. – not accepted   Euphorbia petaloidea var. nuttallii Engelm. – not accepted   Euphorbia petaloides G. Don – not accepted   Euphorbia petiolaris Sims – accepted – manchineel berry   Euphorbia petiolata Banks & Sol. – accepted   Euphorbia petiolata var. petiolata Banks & Sol. – accepted   Euphorbia petiolata var. postii (Boiss.) Radcl.-Sm. – accepted   Euphorbia petitiana A. Rich. – accepted   Euphorbia petraea S. Carter – accepted   Euphorbia petricola P.R.O. Bally & S. Carter – accepted   Euphorbia petrina S. Watson – accepted   Euphorbia petrophila C.A. Mey. – accepted   Euphorbia petrophila var. armena Boiss. – not accepted   Euphorbia petrophila var. colchica Litv. – not accepted   Euphorbia phanerophlebias Baker ex Denis – not accepted   Euphorbia philippiana (Klotzsch & Garcke) Boiss. – accepted   Euphorbia philippina J. Gay ex Boiss. – not accepted   Euphorbia phillipsiae N.E. Br. – accepted   Euphorbia phillipsioides S. Carter – accepted   Euphorbia philora (Cockerell) Tidestr. – not accepted   Euphorbia phlomos Candargy – not accepted   Euphorbia phosphorea Mart. – accepted   Euphorbia phyllanthoides Boiss. – not accepted   Euphorbia phylloclada Boiss. – accepted   Euphorbia phymatoclada Boiss. – not accepted   Euphorbia phymatosperma Boiss. & Gaill. – accepted   Euphorbia phymatosperma ssp. cernua (Coss. & Durieu ex Boiss.) Vindt – accepted   Euphorbia phymatosperma ssp. phymatosperma Boiss. & Gaill. – accepted   Euphorbia physalifolia Boiss. – not accepted   Euphorbia physocaulos Mouterde – accepted   Euphorbia physoclada Boiss. – accepted   Euphorbia picachensis Brandegee – accepted   Euphorbia piceoides Thulin – accepted   Euphorbia picta Jacq. – not accepted   Euphorbia pileoides Millsp. – not accepted   Euphorbia pillansii N.E. Br. – accepted   Euphorbia pilosa L. – accepted   Euphorbia pilosa Pursh – not accepted   Euphorbia pilosa ssp. ojensis Stepanov – not accepted   Euphorbia pilosa ssp. villosa (Waldst. & Kit. ex Willd.) Nyman – not accepted   Euphorbia pilosa var. austriaca (A. Kern.) Nyman – not accepted   Euphorbia pilosa var. illirica (Lam.) Nyman – not accepted   Euphorbia pilosa var. longifolia Rouy – not accepted   Euphorbia pilosa var. procera (M. Bieb.) Nyman – not accepted   Euphorbia pilosa var. reichenbachiana (Willk.) Boiss. – not accepted   Euphorbia pilosa var. trigonocarpa (Fisch.) Boiss. – not accepted   Euphorbia pilosa var. villosa (Waldst. & Kit. ex Willd.) Nyman – not accepted   Euphorbia pilosissima S. Carter – accepted   Euphorbia pilosula Engelm. ex Boiss. – not accepted   Euphorbia pilulifera auct. non L. – not accepted   Euphorbia pilulifera L. – not accepted   Euphorbia pilulifera f. humifusa Domin – not accepted   Euphorbia pilulifera f. rubromaculata Domin – not accepted   Euphorbia pilulifera f. viridis Domin – not accepted   Euphorbia pilulifera var. arechavaletae Herter – not accepted   Euphorbia pilulifera var. discolor Engelm. – not accepted   Euphorbia pilulifera var. glabrescens Thell. – not accepted   Euphorbia pilulifera var. guaranitica Chodat & Hassl. – not accepted   Euphorbia pilulifera var. hirta (L.) Thell. – not accepted   Euphorbia pilulifera var. obliterata (Jacq.) Hitchc. – not accepted   Euphorbia pilulifera var. procumbens Boiss. – not accepted   Euphorbia pimeleodendron Pax – not accepted   Euphorbia pinariona Urb. – not accepted   Euphorbia pindicola Hausskn. – not accepted   Euphorbia pinea L. – not accepted   Euphorbia pinea ssp. celerieri Emb. – not accepted   Euphorbia pinea var. azorica (Hochst.) Boiss. – not accepted   Euphorbia pinetorum (Small) G.L. Webster – accepted – pineland spurge   Euphorbia pinetorum (Small) Jabl. – not accepted   Euphorbia pinetorum Dubovik – not accepted   Euphorbia pinifolia Lam. – not accepted   Euphorbia pinifolia Willd. – not accepted   Euphorbia pinkavana M.C. Johnst. – accepted   Euphorbia pinnulosa Lojac. – not accepted   Euphorbia pinus H. Lév. – not accepted   Euphorbia pionosperma V.W. Steinm. & Felger – accepted   Euphorbia pirahazo Jum. – not accepted   Euphorbia pirottae N. Terrac. – accepted   Euphorbia piscatoria Aiton – accepted   Euphorbia piscidermis M.G. Gilbert – accepted   Euphorbia pisidica Hub.-Mor. & M.S. Khan – accepted   Euphorbia pistiifolia Boiss. – not accepted   Euphorbia pitcairnensis F. Br. – not accepted   Euphorbia pithyusa L. – accepted   Euphorbia pithyusa ssp. cupanii (Guss. ex Bertol.) Radcl.-Sm. – accepted   Euphorbia pithyusa ssp. pithyusa L. – accepted   Euphorbia pithyusa var. dianthifolia (Lojac.) Oudejans – not accepted   Euphorbia pithyusa var. procera Gren. & Godr. – not accepted   Euphorbia plagiantha Drake – accepted   Euphorbia planiticola D.C. Hassall – accepted   Euphorbia platyacantha Drake – not accepted   Euphorbia platyacantha Pax – not accepted   Euphorbia platycephala Pax – accepted   Euphorbia platyclada Rauh – accepted   Euphorbia platyclada var. hardyi Rauh – accepted   Euphorbia platyclada var. platyclada Rauh – accepted   Euphorbia platylepis Decne. – not accepted   Euphorbia platymammillaris Croizat – not accepted   Euphorbia platyphylla L. – not accepted   Euphorbia platyphyllos L. – accepted – broadleaf spurge   Euphorbia platyphyllos ssp. flavopurpurea (Willk.) Nyman – not accepted   Euphorbia platyphyllos ssp. literata (Jacq.) Holub – accepted   Euphorbia platyphyllos ssp. platyphyllos L. – accepted   Euphorbia platyphyllos var. literata (Jacq.) W. Koch – not accepted   Euphorbia platyphyllos var. subciliata (Pers.) Nyman – not accepted   Euphorbia platyrrhiza L.C. Leach – accepted   Euphorbia platysperma Engelm. ex S. Watson – accepted – flatseed sandmat, flat-seeded spurge, dune spurge   Euphorbia plebeia Boiss. – accepted   Euphorbia plenispina S. Carter – accepted   Euphorbia plicata S. Watson – not accepted   Euphorbia plumerioides Teijsm. ex Hassk. – accepted   Euphorbia plumerioides var. acuminata J.J. Sm. – not accepted   Euphorbia plumerioides var. homochroa Boiss. – not accepted   Euphorbia plumerioides var. macrocarpa Radcl.-Sm. – not accepted   Euphorbia plumerioides var. microphylla Radcl.-Sm. – not accepted   Euphorbia plummerae S. Watson – not accepted   Euphorbia plummeriae S. Watson – not accepted   Euphorbia podadenia Boiss. – accepted   Euphorbia podagrica I.M. Johnst. – not accepted   Euphorbia podocarpifolia Urb. – accepted   Euphorbia podperae Croizat – not accepted   Euphorbia poecilophylla (Prokh.) Prokh. – accepted   Euphorbia poeppigii (Klotzsch & Garcke) Boiss. – accepted   Euphorbia poeppigii var. laxa Boiss. – not accepted   Euphorbia poggei Pax – not accepted   Euphorbia poggei var. benguelensis Pax – not accepted   Euphorbia poggei var. villosa Pax – not accepted   Euphorbia poinsettiana Buist ex Giah. – not accepted   Euphorbia poissonii Pax – accepted   Euphorbia poliosperma Urb. – not accepted   Euphorbia polyacantha Boiss. – accepted   Euphorbia polyacantha ssp. rosenii Pax – not accepted   Euphorbia polyacantha var. subinarticulata Schweinf. – not accepted   Euphorbia polyantha Pax – accepted   Euphorbia polycarpa Benth. – accepted – smallseed sandmat   Euphorbia polycarpa var. appendiculata (Engelm.) Munz – not accepted   Euphorbia polycarpa var. carmenensis (Rose) L.C. Wheeler – accepted   Euphorbia polycarpa var. genuiflexa L.C. Wheeler – accepted   Euphorbia polycarpa var. hirtella Boiss. – not accepted   Euphorbia polycarpa var. intermixta (S. Watson) L.C. Wheeler – not accepted   Euphorbia polycarpa var. johnstonii L.C. Wheeler – accepted   Euphorbia polycarpa var. mejamia L.C. Wheeler – accepted   Euphorbia polycarpa var. parishii (Greene) Jeps. – not accepted   Euphorbia polycarpa var. petrina (S. Watson) I.M. Johnst. – not accepted   Euphorbia polycarpa var. polycarpa Benth. – accepted – smallseed sandmat   Euphorbia polycarpa var. simulans L.C. Wheeler – not accepted   Euphorbia polycarpa var. typica L.C. Wheeler – not accepted   Euphorbia polycarpa var. vestita S. Watson – not accepted   Euphorbia polycaula Boiss. & Hohen. – accepted   Euphorbia polycephala Marloth – accepted   Euphorbia polychroma A. Kern. – accepted   Euphorbia polychroma ssp. lingulata (Heuff.) Soó – not accepted   Euphorbia polychroma ssp. microsperma (Murb.) Beck – not accepted   Euphorbia polychroma var. microsperma Murb. – not accepted   Euphorbia polyclada Boiss. – not accepted   Euphorbia polycnemoides Hochst. ex Boiss. – accepted   Euphorbia polygalifolia Boiss. & Reut. – accepted   Euphorbia polygalifolia ssp. hirta (Lange) M. Laínz – accepted   Euphorbia polygalifolia ssp. mariolensis (Rouy) Mateo & Figuerola – not accepted   Euphorbia polygalifolia ssp. polygalifolia Boiss. & Reut. – accepted   Euphorbia polygalifolia ssp. vasconcensis Vivant ex Kerguélen – accepted   Euphorbia polygalifolia var. hirta Lange – not accepted   Euphorbia polygona Haw. – accepted   Euphorbia polygona var. alba D.H. Schnabel – accepted   Euphorbia polygona var. ambigua D.H. Schnabel – accepted   Euphorbia polygona var. anoplia (Stapf) D.H. Schnabel – accepted   Euphorbia polygona var. exilis D.H. Schnabel – accepted   Euphorbia polygona var. hebdomadalis D.H. Schnabel – accepted   Euphorbia polygona var. horrida (Boiss.) D.H.Schnabel – accepted   Euphorbia polygona var. major (A.C. White, R.A. Dyer & B. Sloane) D.H. Schnabel – accepted   Euphorbia polygona var. minor D.H. Schnabel – accepted   Euphorbia polygona var. nivea D.H. Schnabel – accepted   Euphorbia polygona var. noorsveldensis (A.C. White, R.A. Dyer & B. Sloane) D.H. Schnabel – accepted   Euphorbia polygona var. polygona Haw. – accepted   Euphorbia polygona var. striata (A.C. White, R.A. Dyer & B. Sloane) D.H. Schnabel – accepted   Euphorbia polygonata Lodd. – not accepted   Euphorbia polygonifolia L. – accepted – seaside sandmat   Euphorbia polygonisperma Gren. & Godr. – not accepted   Euphorbia polyphylla Engelm. ex Holz. – accepted – Lesser Florida spurge   Euphorbia polytimetica (Prokh.) Prokh. – not accepted   Euphorbia pomiformis Thunb. – not accepted   Euphorbia ponderosa S. Carter – accepted   Euphorbia pondii Millsp. – accepted   Euphorbia pontica Prokh. – not accepted   Euphorbia popayanensis Pax – not accepted   Euphorbia porphyrantha Phil. – accepted   Euphorbia porphyrastra Hand.-Mazz. – not accepted   Euphorbia porteriana (Small) Oudejans – accepted – Porter's sandmat   Euphorbia porteriana var. keyensis (Small) Oudejans – not accepted   Euphorbia porteriana var. scoparia (Small) Oudejans – not accepted   Euphorbia portlandica L. – accepted   Euphorbia portlandica ssp. tetraceras (Lange) Nyman – not accepted   Euphorbia portoricensis Urb. – not accepted   Euphorbia portoricensis var. albescens Urb. – not accepted   Euphorbia portoricensis var. genuina Urb. – not accepted   Euphorbia portucasadiana (Croizat) Subils – accepted   Euphorbia portulacoides L. – accepted   Euphorbia portulacoides ssp. collina (Phil.) Croizat – accepted   Euphorbia portulacoides ssp. major (Müll. Arg.) Croizat – accepted   Euphorbia portulacoides ssp. nahuelhuapina Croizat – not accepted   Euphorbia portulacoides ssp. normalis Croizat – not accepted   Euphorbia portulacoides ssp. portulacoides L. – accepted   Euphorbia portulacoides var. acutifolia Boiss. – not accepted   Euphorbia portulacoides var. andensis Croizat – not accepted   Euphorbia portulacoides var. bridgesii Boiss. – not accepted   Euphorbia portulacoides var. collina (Phil.) Croizat – not accepted   Euphorbia portulacoides var. glabra Phil. – not accepted   Euphorbia portulacoides var. glaucescens Chodat & Wilczek – not accepted   Euphorbia portulacoides var. major Müll. Arg. – not accepted   Euphorbia portulacoides var. minor Hicken – not accepted   Euphorbia portulacoides var. normalis Kuntze – not accepted   Euphorbia portulacoides var. obtusifolia Müll. Arg. – not accepted   Euphorbia portulacoides var. porphyrantha Kuntze – not accepted   Euphorbia portulacoides var. spathulata Chodat & Wilczek – not accepted   Euphorbia portulacoides var. trinervia Boiss. – not accepted   Euphorbia portulacoides var. xanthantha Kuntze – not accepted   Euphorbia portulana S. Watson – not accepted   Euphorbia postii Boiss. – not accepted   Euphorbia potaninii Prokh. – accepted   Euphorbia potentilloides Boiss. – accepted   Euphorbia potosina Fernald – accepted   Euphorbia potosina var. lamasis Carvajal & Lomelí – not accepted   Euphorbia pouzolzii Loisel. – not accepted   Euphorbia praecox (Boiss.) Fisch. ex Grossh. – not accepted   Euphorbia preslii Guss. – not accepted   Euphorbia preslii Spruner ex Nyman – not accepted   Euphorbia preslii var. andicola Danguy & Cherm. – not accepted   Euphorbia preslii var. glaberrima Boiss. – not accepted   Euphorbia preussii Pax – not accepted   Euphorbia prieuriana Baill. – not accepted   Euphorbia primulifolia Baker – accepted   Euphorbia primulifolia var. begardii Cremers – accepted   Euphorbia primulifolia var. primulifolia Baker – accepted   Euphorbia proballyana L.C. Leach – accepted   Euphorbia proballyana var. multangula S. Carter – accepted   Euphorbia proballyana var. proballyana L.C. Leach – accepted   Euphorbia procera M. Bieb. – accepted   Euphorbia procera var. trichocarpa W.D.J. Koch – not accepted   Euphorbia procera var. tuberculata W.D.J. Koch – not accepted   Euphorbia proctorii (D.G. Burch) Correll – accepted   Euphorbia procumbens Mill. – accepted   Euphorbia procumbens Meerb. – not accepted   Euphorbia procumbens DC. – not accepted   Euphorbia prokhanovii Popov – not accepted   Euphorbia prolifera Buch.-Ham. ex D. Don – accepted   Euphorbia prolifera Ehrenb. ex Boiss. – not accepted   Euphorbia promecocarpa P.H. Davis – accepted   Euphorbia prona S. Carter – accepted   Euphorbia propinqua R. Br. ex N.E. Br. – not accepted   Euphorbia prorepens Popov – not accepted   Euphorbia prostrata Aiton – accepted – ground spurge, blue weed, prostrate sandmat, prostrate spurge   Euphorbia prostrata Burch. ex Hemsl. – not accepted   Euphorbia prostrata var. caudirhiza Fosberg – not accepted   Euphorbia prostrata var. vestita Engelm. ex Boiss. – not accepted   Euphorbia proteifolia Boiss. – not accepted   Euphorbia provincialis Willd. – not accepted   Euphorbia provincialis Noë ex Nyman – not accepted   Euphorbia prunifolia Jacq. – not accepted – painted euphorbia   Euphorbia prunifolia f. silvatica Chodat & Hassl. – not accepted   Euphorbia prunifolia var. angustifolia Müll. Arg. – not accepted   Euphorbia prunifolia var. genuina Müll. Arg. – not accepted   Euphorbia prunifolia var. repanda Müll. Arg. – not accepted   Euphorbia przewalskii Prokh. – not accepted   Euphorbia psammogeton P.S. Green – accepted   Euphorbia pseudagraria P.A. Smirn. – accepted   Euphorbia pseudoapios Maire & Weiller – accepted   Euphorbia pseudobrachiata Dinter – not accepted   Euphorbia pseudoburuana P.R.O. Bally & S. Carter – accepted   Euphorbia pseudocactus A. Berger – accepted   Euphorbia pseudochamaesyce Fisch. & C.A. Mey. – not accepted   Euphorbia pseudochamaesyce f. pilosa (C.A. Mey.) Kitag. – not accepted   Euphorbia pseudocyparissias Jord. – not accepted   Euphorbia pseudodendroides H. Lindb. – not accepted   Euphorbia pseudoengleri Pax – not accepted   Euphorbia pseudofalcata Chiov. – not accepted   Euphorbia pseudofulva Miranda – not accepted   Euphorbia pseudoglareosa Klokov – not accepted   Euphorbia pseudoglobosa Marloth – accepted   Euphorbia pseudograeca Grossh. – not accepted   Euphorbia pseudograntii Pax – accepted   Euphorbia pseudograntii (Hook. f.) Bruyns – not accepted   Euphorbia pseudohirsuta Bruyns – accepted   Euphorbia pseudoholstii Pax – not accepted   Euphorbia pseudolaevis Bruyns – accepted   Euphorbia pseudomollis Bruyns – accepted   Euphorbia pseudonervosa Bruyns – not accepted   Euphorbia pseudonudicaulis Bruyns – accepted   Euphorbia pseudonutans Thell. – not accepted   Euphorbia pseudonutans var. hirsuta (Torr.) Farw. – not accepted   Euphorbia pseudopeplus Speg. – not accepted   Euphorbia pseudopetiolata Bruyns – accepted   Euphorbia pseudoracemosa (P.R.O. Bally) Bruyns – accepted   Euphorbia pseudoracemosa var. lorifolia (P.R.O. Bally) Bruyns – accepted   Euphorbia pseudoracemosa var. pseudoracemosa (P.R.O. Bally) Bruyns – accepted   Euphorbia pseudosaxatilis Kanitz – not accepted   Euphorbia pseudoserpyllifolia Millsp. – not accepted   Euphorbia pseudoserpyllifolia f. typica J.T. Howell – not accepted   Euphorbia pseudoserpyllifolia f. villosa J.T. Howell – not accepted   Euphorbia pseudosikkimensis (Hurus. & Yu. Tanaka) Radcl.-Sm. – accepted   Euphorbia pseudosimplex Bruyns – accepted   Euphorbia pseudosororia (Prokh.) Grossh. – not accepted   Euphorbia pseudostellata Bruyns – accepted   Euphorbia pseudotrinervis Bruyns – accepted   Euphorbia pseudotuberosa Pax – accepted   Euphorbia pseudovillosa Klokov – not accepted   Euphorbia pseudovirgata (Schur) Soó – not accepted – leafy spurge   Euphorbia pseudovolkensii Bruyns – accepted   Euphorbia pteroclada L.C. Leach – accepted   Euphorbia pterococca Brot. – accepted   Euphorbia pterococca var. pilosa Lazare & Charpin – not accepted   Euphorbia pteroneura A. Berger – accepted   Euphorbia pteroneura var. macdougalliana Croizat – not accepted   Euphorbia pteroneura var. typica Croizat – not accepted   Euphorbia pubentissima Michx. – accepted – false flowering spurge, southeastern flowering spurge   Euphorbia pubentissima var. glabrata Boiss. – not accepted   Euphorbia pubera Blume – not accepted   Euphorbia puberula Fernald – not accepted   Euphorbia pubescens Vahl – not accepted   Euphorbia pubescens f. subglabra (Gren. & Godr.) O. Bolòs & Vigo – not accepted   Euphorbia pubescens subvar. integrifolia Deysson – not accepted   Euphorbia pubescens subvar. serrulatifolia Deysson – not accepted   Euphorbia pubescens var. crispata (Willd. ex Hornem.) Boiss. – not accepted   Euphorbia pubescens var. erioclada Sart. ex Nyman – not accepted   Euphorbia pubescens var. glabrescens St.-Lag. – not accepted   Euphorbia pubescens var. glabriflora (Vis.) Nyman – not accepted   Euphorbia pubescens var. laevis Merino – not accepted   Euphorbia pubescens var. leucotricha (Boiss.) Boiss. – not accepted   Euphorbia pubescens var. serrata Lojac. – not accepted   Euphorbia pubescens var. subglabra Gren. & Godr. – not accepted   Euphorbia pubicaulis S. Moore – not accepted   Euphorbia pubigera Friv. ex Boiss. – not accepted   Euphorbia pubiglans N.E. Br. – accepted   Euphorbia pudibunda (P.R.O. Bally) Bruyns – accepted   Euphorbia pudibunda var. lanata (S. Carter) Bruyns – accepted   Euphorbia pudibunda var. pudibunda (P.R.O. Bally) Bruyns – accepted   Euphorbia pudibunda var. rotundifolia (Malaisse & Lecron) Bruyns – accepted   Euphorbia pueblensis Brandegee – accepted   Euphorbia pugniformis Boiss. – not accepted   Euphorbia pulchella Lag. & Rodr. – not accepted   Euphorbia pulchella Brouss. ex DC. – not accepted   Euphorbia pulchella Sessé & Moç. – not accepted   Euphorbia pulchella Kunth – not accepted   Euphorbia pulcherrima Willd. ex Klotzsch – accepted – poinsettia, nochebuena, flor de pascua   Euphorbia pulcherrima f. lutea Standl. – not accepted   Euphorbia pulverulenta Kit. – not accepted   Euphorbia pulvinata Marloth – accepted   Euphorbia pumicicola Huft – accepted   Euphorbia pumila Sibth. & Sm. – not accepted   Euphorbia pumila Pall. ex Ledeb. – not accepted   Euphorbia punctata Delile – accepted   Euphorbia punctata Krock. – not accepted   Euphorbia punctulata Andersson – accepted   Euphorbia pungens Lam. – not accepted   Euphorbia pungens Banks & Sol. – not accepted   Euphorbia punicea Sw. – accepted   Euphorbia purisimana Millsp. – not accepted   Euphorbia purpurascens Schousb. – not accepted   Euphorbia purpurascens Schumach. & Thonn. – not accepted   Euphorbia purpurascens Salzm. ex Ball – not accepted   Euphorbia purpurascens Deysson – not accepted   Euphorbia purpurata Thuill. – not accepted   Euphorbia purpurata var. elliptica Pers. – not accepted   Euphorbia purpurea (Raf.) Fernald – accepted – Darlington's spurge, Darlington's glade spurge   Euphorbia purpureomaculata T.J. Feng & J.X. Huang – not accepted   Euphorbia pusilla Lag. – not accepted   Euphorbia pusillima Post – not accepted   Euphorbia pycnanthema Engelm. – not accepted   Euphorbia pycnanthema f. serrata Millsp. – not accepted   Euphorbia pycnophylla K. Koch – not accepted   Euphorbia pycnostegia Boiss. – accepted   Euphorbia pycnostegia var. laxa Boiss. – not accepted   Euphorbia pycnostegia var. zornioides (Boiss.) Santapau – not accepted   Euphorbia pygmaea Ledeb. – accepted   Euphorbia pygmaea Phil. – not accepted   Euphorbia pyrenaica Jord. – accepted   Euphorbia pyrifolia Lam. – accepted   Euphorbia pyrifolia var. coriacea Radcl.-Sm. – accepted   Euphorbia pyrifolia var. pyrifolia Lam. – accepted   Euphorbia pyriformis N.E. Br. – not accepted   Euphorbia pythinsa Friv. ex Nyman – not accepted   Euphorbia qarad Deflers – accepted   Euphorbia quadrangularis Pax – accepted   Euphorbia quadrata Nel – accepted   Euphorbia quadrialata Pax – accepted   Euphorbia quadrilatera L.C. Leach – accepted   Euphorbia quadrispina S. Carter – accepted   Euphorbia quaitensis S. Carter – accepted   Euphorbia quartziticola Leandri – accepted   Euphorbia quinquecostata Volkens – accepted   Euphorbia quinqueradiata Kitam. – not accepted   Euphorbia quintasii Pax – not accepted   Euphorbia quitensis Boiss. – accepted   Euphorbia rablensis Wulfen ex Schrank – not accepted   Euphorbia racemosa E. Mey. ex Boiss. – not accepted   Euphorbia racemosa Tausch ex Rchb. – not accepted   Euphorbia radians Benth. – accepted – sun spurge   Euphorbia radians var. radians Benth. – accepted   Euphorbia radians var. stormiae (Croizat) Rzed. & Calderón – accepted   Euphorbia radiata Thunb. – not accepted   Euphorbia radiata E. Mey. ex Boiss. – not accepted   Euphorbia radicans Moric. ex Klotzsch & Garcke – not accepted   Euphorbia radiifera L.C. Leach – accepted   Euphorbia radioloides Boiss. – accepted   Euphorbia radioloides var. rubra Millsp. – not accepted   Euphorbia rafinesquei Greene – not accepted   Euphorbia ragusana Rchb. – not accepted   Euphorbia ramanensis Baum – not accepted   Euphorbia ramena Buddens. & Razaf. – accepted   Euphorbia ramipressa Croizat – accepted   Euphorbia ramofraga Denis & Humbert ex Leandri – accepted   Euphorbia ramosa Seaton – accepted   Euphorbia ramosa var. villosior Greenm. – not accepted   Euphorbia ramosissima Loisel. – not accepted   Euphorbia ramosissima Hook. & Arn. – not accepted   Euphorbia ramulosa L.C. Leach – accepted   Euphorbia randrianjohanyi Haev. & J.N. Labat – accepted   Euphorbia rangeana Dinter ex Jacobsen – not accepted   Euphorbia rangovalensis Leandri – accepted   Euphorbia raphanorrhiza (Millsp.) J.F. Macbr. – accepted   Euphorbia raphilippii Oudejans – accepted   Euphorbia rapulum Kar. & Kir. – accepted   Euphorbia rattanii S. Watson – not accepted   Euphorbia rauhii Haev. & J.N. Labat – accepted   Euphorbia rayturneri V.W. Steinm. & Jercinovic – accepted   Euphorbia razafindratsirae Lavranos – accepted   Euphorbia razafinjohanyi Ursch & Leandri – accepted   Euphorbia reboudiana Coss. ex Batt. & Trab. – not accepted   Euphorbia rechingeri Greuter – accepted   Euphorbia reclinata P.R.O. Bally & S. Carter – accepted   Euphorbia reconciliationis Radcl.-Sm. – accepted   Euphorbia recta Klotzsch – not accepted   Euphorbia rectirama N.E. Br. – accepted   Euphorbia recurva Hook. f. – accepted   Euphorbia reflexa Formánek – not accepted   Euphorbia refracta Lowe – not accepted   Euphorbia refugii Croizat – not accepted   Euphorbia reghinii (Chiov.) Vollesen – not accepted   Euphorbia regina H. Lév. – not accepted   Euphorbia regis-jubae Webb & Berthel. – accepted   Euphorbia reichenbachiana Willk. – not accepted   Euphorbia reichenbachiana Lojac. – not accepted   Euphorbia reineckei Pax – accepted   Euphorbia reinhardtii Volkens – not accepted   Euphorbia reinhardtii var. bilocularis (N.E. Br.) Oudejans – not accepted   Euphorbia reinwardtiana Steud. – not accepted   Euphorbia remyi A. Gray ex Boiss. – accepted – Remy's sandmat   Euphorbia remyi var. hanaleiensis Sherff – not accepted – Remy's sandmat   Euphorbia remyi var. kahiliana Sherff – not accepted   Euphorbia remyi var. kauaiensis O. Deg. & Sherff – accepted – Remy's sandmat   Euphorbia remyi var. leptopoda Sherff – not accepted   Euphorbia remyi var. lydgatei Sherff – not accepted   Euphorbia remyi var. molesta Sherff – not accepted   Euphorbia remyi var. olokelensis Skottsb. & Sherff – not accepted   Euphorbia remyi var. pteropoda Sherff – not accepted   Euphorbia remyi var. remyi A. Gray ex Boiss. – accepted – Remy's sandmat   Euphorbia remyi var. wahiawana Sherff – not accepted   Euphorbia remyi var. waimeana Sherff – not accepted   Euphorbia remyi var. wilkesii Sherff – not accepted   Euphorbia reniformis Blume – accepted   Euphorbia renneyi (S. Carter) Bruyns – accepted   Euphorbia renouardii Pax – not accepted   Euphorbia repanda (Haw.) Sweet – accepted   Euphorbia repens K. Koch – accepted   Euphorbia repetita Hochst. ex A. Rich. – accepted   Euphorbia reptans P.R.O. Bally & S. Carter – accepted   Euphorbia requienii Lojac. – not accepted   Euphorbia requienii var. dianthifolia Lojac. – not accepted   Euphorbia resinifera O. Berg – accepted – resin spurge, Euphorbe à résine   Euphorbia resinifera var. chlarosoma Croizat – not accepted   Euphorbia resinifera var. typica Croizat – not accepted   Euphorbia restiacea Benth. – accepted   Euphorbia restituta N.E. Br. – accepted   Euphorbia restricta R.A. Dyer – accepted   Euphorbia retroscabra S. Watson – not accepted   Euphorbia retrospina Rauh & Gerold – accepted   Euphorbia retusa Forssk. – accepted   Euphorbia retusa (L.) Cav. – not accepted   Euphorbia reuteriana Boiss. – accepted   Euphorbia revoluta Engelm. – accepted – threadstem sandmat, threadstem spurge   Euphorbia rhabdodes Boiss. – accepted   Euphorbia rhabdotosperma Radcl.-Sm. – accepted   Euphorbia rhipsaloides Lem. – not accepted   Euphorbia rhizophora (P.R.O. Bally) Bruyns – accepted   Euphorbia rhombea Willd. ex Link – not accepted   Euphorbia rhombifolia Boiss. – accepted   Euphorbia rhytidosperma Boiss. & Balansa – accepted   Euphorbia rhytisperma (Klotzsch & Garcke) Boiss. – accepted   Euphorbia riae Pax & K. Hoffm. – not accepted   Euphorbia richardiana Baill. – not accepted   Euphorbia richardsiae L.C. Leach – accepted   Euphorbia richardsiae ssp. richardsiae L.C. Leach – accepted   Euphorbia richardsiae ssp. robusta L.C. Leach – accepted   Euphorbia richardsonii Mayfield – accepted   Euphorbia ridleyi Croizat – accepted   Euphorbia riebeckii Pax – accepted   Euphorbia riedeliana Boiss. – not accepted   Euphorbia rigens Sweet – not accepted   Euphorbia rigida M. Bieb. – accepted – upright myrtle spurge   Euphorbia rigida Loisel. – not accepted   Euphorbia rigida var. mauretanica (Maire) Oudejans – not accepted   Euphorbia rigidula Steud. – not accepted   Euphorbia rigoi Boiss. ex Freyn – not accepted   Euphorbia riinae V.W. Steinm. – accepted   Euphorbia rimarum Coss. & Balansa – accepted   Euphorbia rinconis M.E. Jones – not accepted   Euphorbia riparia Jord. – not accepted   Euphorbia ritchiei (P.R.O. Bally) Bruyns – accepted   Euphorbia ritchiei ssp. marsabitensis (S. Carter) Bruyns – accepted   Euphorbia ritchiei ssp. nyambensis (S. Carter) Bruyns – accepted   Euphorbia ritchiei ssp. ritchiei (P.R.O. Bally) Bruyns – accepted   Euphorbia rivae Pax – accepted   Euphorbia rivasii P. Palau – not accepted   Euphorbia rivularis A. Heller – not accepted   Euphorbia robbiae Turrill – not accepted   Euphorbia robecchii Pax – accepted   Euphorbia robivelonae Rauh – accepted   Euphorbia robusta (Engelm.) Small – not accepted – robust spurge, Rocky Mountain spurge   Euphorbia robusta var. interioris Norton – not accepted   Euphorbia rochaensis (Croizat) Alonso Paz & Marchesi – accepted   Euphorbia rochebrunei Franch. & Sav. – not accepted   Euphorbia rockii C.N. Forbes – accepted – Koolau Range sandmat   Euphorbia rockii var. grandiflora (Hillebr.) Oudejans – not accepted   Euphorbia rockii var. grandifolia (Hillebr.) Oudejans – not accepted   Euphorbia roemerana Scheele – not accepted   Euphorbia roemeriana Scheele – accepted – Roemer's spurge   Euphorbia roeseri (Boiss.) Halácsy – not accepted   Euphorbia rogeri N.E. Br. – not accepted   Euphorbia rohlenae Velen. – accepted   Euphorbia roschanica (Ikonn.) Czerepan. – not accepted   Euphorbia rosea Retz. – accepted   Euphorbia rosescens E.L. Bridges & Orzell – accepted – scrub spurge   Euphorbia rossiana Pax – accepted   Euphorbia rossica P.A. Smirn. – accepted   Euphorbia rossii Rauh & Buchloh – accepted   Euphorbia rosularis Fed. – accepted   Euphorbia rothiana Spreng. – accepted   Euphorbia rothiana var. pubescens (Boiss.) Oudejans – not accepted   Euphorbia rothiana var. wightiana (Boiss.) Oudejans – not accepted   Euphorbia rothrockii (Millsp.) Oudejans – not accepted   Euphorbia rotundata Hochst. – not accepted   Euphorbia rotundifolia (Lam.) Loisel. – not accepted   Euphorbia rotundifolia Hook. & Arn. – not accepted   Euphorbia rowlandii R.A. Dyer – accepted   Euphorbia royleana Boiss. – accepted   Euphorbia rubella Pax – accepted   Euphorbia rubens Chaix – not accepted   Euphorbia rubescens Link – not accepted   Euphorbia rubicunda Blume – not accepted   Euphorbia rubida Greenm. – not accepted   Euphorbia rubra Cav. – not accepted   Euphorbia rubricaulis Regel – not accepted   Euphorbia rubriflora N.E. Br. – accepted   Euphorbia rubriflora H. Lév. – not accepted   Euphorbia rubriseminalis S. Carter ex Boulos – accepted   Euphorbia rubrispinosa S. Carter – accepted   Euphorbia rubromarginata L.E. Newton – accepted   Euphorbia rubrosperma Lotsy – not accepted   Euphorbia ruderalis Dumort. – not accepted   Euphorbia ruderalis Scheele – not accepted   Euphorbia rudis N.E. Br. – not accepted   Euphorbia rudolfii N.E. Br. – accepted   Euphorbia ruegeliana Shuttlew. ex Boiss. – not accepted   Euphorbia ruficeps S. Carter – accepted   Euphorbia rugosa Kit. – not accepted   Euphorbia rugosiflora L.C. Leach – accepted   Euphorbia rugosissima Pau & Font Quer – not accepted   Euphorbia rugulosa (Engelm. ex Millsp.) Greene – not accepted   Euphorbia ruiziana (Klotzsch & Garcke) Boiss. – accepted   Euphorbia ruizlealii Subils – accepted   Euphorbia rumelica Formánek – not accepted   Euphorbia rumicifolia Boiss. – not accepted   Euphorbia rupestris Ledeb. – accepted   Euphorbia rupestris Larrañaga – not accepted   Euphorbia rupicola Boiss. – not accepted   Euphorbia rupicola Scheele – not accepted   Euphorbia rupicola var. almeriensis Pau – not accepted   Euphorbia rupicola var. clementei (Boiss.) Pau – not accepted   Euphorbia rupicola var. major Boiss. – not accepted   Euphorbia rusbyi Greene – not accepted   Euphorbia ruscifolia (Boiss.) N.E. Br. – accepted   Euphorbia ruscinonensis Boiss. – not accepted   Euphorbia ruspolii Chiov. – not accepted   Euphorbia rutilis (Millsp.) Standl. & Steyerm. – accepted   Euphorbia rzedowskii McVaugh – accepted   Euphorbia sabulicola Boiss. – accepted   Euphorbia saccharata Boiss. – accepted   Euphorbia sacchii Chiov. – not accepted   Euphorbia sachetiana (J. Florence) Govaerts – accepted   Euphorbia sagittaria Marloth – not accepted   Euphorbia sagraeana A. Rich. ex Boiss. – not accepted   Euphorbia sahendi Bornm. – accepted   Euphorbia sajanensis (Boiss.) Baikov – not accepted   Euphorbia sakarahaensis Rauh – accepted   Euphorbia salicetorum Jord. – not accepted   Euphorbia salicifolia Host – accepted   Euphorbia salicifolia f. pseudosalicifolia (Schur) Oudejans – not accepted   Euphorbia salicifolia var. angustata Rochel – not accepted   Euphorbia salicifolia var. incana (Schur) Nyman – not accepted   Euphorbia salicifolia var. pseudosalicifolia Schur – not accepted   Euphorbia salina Willd. ex Boiss. – not accepted   Euphorbia salota Leandri – accepted   Euphorbia salsicola S. Carter – accepted   Euphorbia salsuginosa (McVaugh) Radcl.-Sm. & Govaerts – not accepted   Euphorbia samburuensis P.R.O. Bally & S. Carter – accepted   Euphorbia sampsonii Hance – not accepted   Euphorbia sanasunitensis Hand.-Mazz. – not accepted   Euphorbia sancta Pax – not accepted   Euphorbia sanctae-catharinae Fayed – accepted   Euphorbia sanguinea Hochst. & Steud. ex Benth. – not accepted   Euphorbia sanguinea Thore – not accepted   Euphorbia sanguinea var. intermedia Boiss. – not accepted   Euphorbia sanguinea var. jemenica Schweinf. – not accepted   Euphorbia sanguinea var. natalensis Boiss. – not accepted   Euphorbia sanguinea var. nilagirica (Miq.) Boiss. – not accepted   Euphorbia sanguinea var. setigera (Klotzsch & Garcke) Boiss. – not accepted   Euphorbia sanmartensis Rusby – not accepted   Euphorbia santapaui A.N. Henry – accepted   Euphorbia sapiifolia Baill. – not accepted   Euphorbia sapinii De Wild. – accepted   Euphorbia saratoi Ardoino – not accepted   Euphorbia sarawschanica Regel – accepted   Euphorbia sarcoceras O.L.M. Silva & Cordeiro – accepted   Euphorbia sarcodes Boiss. – accepted   Euphorbia sarcostemmatoides Dinter – not accepted   Euphorbia sarcostemmoides J.H. Willis – accepted   Euphorbia sareciana M.G. Gilbert – accepted   Euphorbia sareptana Becker – accepted   Euphorbia sarmentosa Welw. ex Pax – accepted   Euphorbia satureioides Lam. – not accepted   Euphorbia saudiarabica Fayed & D. Al-Zahrani – accepted   Euphorbia sauliana Boreau ex Boiss. – not accepted   Euphorbia saurica Baikov – accepted   Euphorbia savaryi Kiss – not accepted   Euphorbia saxatilis Jacq. – accepted   Euphorbia saxatilis var. carnica Boiss. – not accepted   Euphorbia saxicola Radcl.-Sm. – accepted   Euphorbia saxorum P.R.O. Bally & S. Carter – accepted   Euphorbia scabrella Boiss. – not accepted   Euphorbia scabrifolia Kurz – accepted   Euphorbia scandens Kunth – accepted   Euphorbia scarlatina S. Carter – accepted   Euphorbia scatorhiza S. Carter – accepted   Euphorbia schaeferi Dinter – not accepted   Euphorbia schaijesii (Malaisse) Bruyns – accepted   Euphorbia scheffleri Pax – accepted   Euphorbia schickendantzii Hieron. – accepted   Euphorbia schiedeana (Klotzsch & Garcke) Mayfield ex C. Nelson – accepted   Euphorbia schillingii Radcl.-Sm. – accepted   Euphorbia schillingii var. praecox A.D. Schill. ex Radcl.-Sm. – not accepted   Euphorbia schimperi C. Presl – accepted   Euphorbia schimperiana Scheele – accepted   Euphorbia schimperiana Hochst. ex A. Rich. – not accepted   Euphorbia schimperiana var. buchananii (Pax) N.E. Br. – not accepted   Euphorbia schimperiana var. pubescens (N.E. Br.) S. Carter – accepted   Euphorbia schimperiana var. schimperiana Scheele – accepted   Euphorbia schimperiana var. velutina N.E. Br. – accepted   Euphorbia schinzii Pax – accepted   Euphorbia schizacantha Pax – accepted   Euphorbia schizadenia Boiss. & Hohen. – not accepted   Euphorbia schizoceras Boiss. – not accepted   Euphorbia schizolepis F. Muell. ex Boiss. – accepted   Euphorbia schizolepis var. glabra Benth. – not accepted   Euphorbia schizoloba Engelm. – accepted – Mojave spurge   Euphorbia schizoloba var. mollis Norton – not accepted   Euphorbia schlechtendalii Boiss. – accepted   Euphorbia schlechtendalii var. pacifica McVaugh – accepted   Euphorbia schlechtendalii var. schlechtendalii Boiss. – accepted   Euphorbia schlechtendalii var. websteri McVaugh – accepted   Euphorbia schlechteri Pax – accepted   Euphorbia schmitzii L.C. Leach – accepted   Euphorbia schoenlandii Pax – accepted   Euphorbia schottiana Boiss. – accepted   Euphorbia schubei Pax – accepted   Euphorbia schugnanica B. Fedtsch. – accepted   Euphorbia schultzii Benth. – accepted   Euphorbia schumannii Radcl.-Sm. – accepted   Euphorbia schweinfurthii Balf. f. – accepted   Euphorbia sciadophila Boiss. – accepted   Euphorbia sciadophila f. orbicularis Chodat & Hassl. – not accepted   Euphorbia scitula L.C. Leach – accepted   Euphorbia sclerocyathium Korovin & Popov – accepted   Euphorbia sclerophylla Boiss. – accepted   Euphorbia sclerophylla var. myrtifolia Boiss. – not accepted   Euphorbia sclerophylla var. ruscifolia Boiss. – not accepted   Euphorbia scolopendrea Haw. – not accepted   Euphorbia scoparia N.E. Br. – not accepted   Euphorbia scopiformis (Klotzsch & Garcke) Boiss. – not accepted   Euphorbia scopoliana Steud. – not accepted   Euphorbia scopulorum Brandegee – accepted   Euphorbia scopulorum var. inornata M.C. Johnst. – accepted   Euphorbia scopulorum var. nuda M.C. Johnst. – accepted   Euphorbia scopulorum var. scopulorum Brandegee – accepted   Euphorbia scordiifolia Jacq. – accepted   Euphorbia scotanum Schltdl. – accepted   Euphorbia scotanum var. yavalquahuitl (Schltdl.) Boiss. – not accepted   Euphorbia scripta Sommier & Levier – accepted   Euphorbia scutiformis V.W. Steinm. & P.E. Berry – accepted   Euphorbia scyphadena S. Carter – accepted   Euphorbia sebastinei Binojk. & N.P. Balakr. – accepted   Euphorbia sebsebei M.G. Gilbert – accepted   Euphorbia seclusa N.E. Br. – not accepted   Euphorbia seemannii Klotzsch – not accepted   Euphorbia segetalis L. – accepted – grainfield spurge   Euphorbia segetalis ssp. linifolia (Nath. ex L.) Oudejans – not accepted   Euphorbia segetalis var. litoralis Lange – not accepted   Euphorbia segetalis var. longibracteata (DC.) Boiss. – not accepted   Euphorbia segetalis var. pinea (L.) Lange – accepted   Euphorbia segetalis var. segetalis L. – accepted   Euphorbia segoviensis (Klotzsch & Garcke) Boiss. – accepted   Euphorbia seguieri (Scop.) All. – not accepted   Euphorbia seguieriana Neck. – accepted   Euphorbia seguieriana ssp. hohenackeri (Boiss.) Rech. f. – accepted   Euphorbia seguieriana ssp. loiseleurii (Rouy) Greuter & Burdet – not accepted   Euphorbia seguieriana ssp. seguieriana Neck. – accepted   Euphorbia seguieriana var. arenivaga (Martrin-Donos) Oudejans – not accepted   Euphorbia seguieriana var. dentata (Chabert) Oudejans – not accepted   Euphorbia seguieriana var. firma (Ledeb.) Oudejans – not accepted   Euphorbia seguieriana var. intermedia (Savul.) Oudejans – not accepted   Euphorbia seguieriana var. lanceolata (Cariot) Oudejans – not accepted   Euphorbia seguieriana var. latifolia (J.J. Schmitz & Regel) Oudejans – not accepted   Euphorbia seguieriana var. minor (Duby) Wilczek – not accepted   Euphorbia seguieriana var. prostrata Fiori – not accepted   Euphorbia seguieriana var. sturii (Holuby) Oudejans – not accepted   Euphorbia seibanica Lavranos & Gifri – accepted   Euphorbia sekukuniensis R.A. Dyer – accepted   Euphorbia seleri Donn. Sm. – accepted   Euphorbia selloi (Klotzsch & Garcke) Boiss. – accepted   Euphorbia selloi var. setosa Boiss. – not accepted   Euphorbia selousiana S. Carter – accepted   Euphorbia semiperfoliata Viv. – accepted   Euphorbia semiverticillata Halácsy – not accepted   Euphorbia semivillosa (Prokh.) Krylov – accepted   Euphorbia semperflorens L.C. Leach – accepted   Euphorbia sendaica Makino – accepted   Euphorbia senguptae N.P. Balakr. & Subr. – accepted   Euphorbia senilis Standl. & Steyerm. – not accepted   Euphorbia sennenii Pau – not accepted   Euphorbia sennii Chiov. – accepted   Euphorbia sepens ssp. flexicaulis (Scheele) Thell. – not accepted   Euphorbia sepens ssp. psilocyanthia Thell. – not accepted   Euphorbia sepium N.E. Br. – not accepted   Euphorbia septentrionalis P.R.O. Bally & S. Carter – accepted   Euphorbia septentrionalis ssp. gamugofana M.G. Gilbert – accepted   Euphorbia septentrionalis ssp. septentrionalis P.R.O. Bally & S. Carter – accepted   Euphorbia sepulta P.R.O. Bally & S. Carter – accepted   Euphorbia sera-comans Bubani – not accepted   Euphorbia serbica Formánek – not accepted   Euphorbia serendipita L.E. Newton – accepted   Euphorbia seretii De Wild. – accepted   Euphorbia seretii ssp. seretii De Wild. – accepted   Euphorbia seretii ssp. variantissima L.C. Leach – accepted   Euphorbia sericocarpa Hand.-Mazz. – not accepted   Euphorbia serotina Host – not accepted   Euphorbia serpens Kunth – accepted – matted sandmat, creeping spurge, round-leafed spurge   Euphorbia serpens Balb. ex Boiss. – not accepted   Euphorbia serpens var. fissistipula Thell. – not accepted   Euphorbia serpens var. flexicaulis (Scheele) J.M. Coult. – not accepted   Euphorbia serpens var. imbricata Boiss. – not accepted   Euphorbia serpens var. indica Engelm. ex Boiss. – not accepted   Euphorbia serpens var. microphylla Müll. Arg. – not accepted   Euphorbia serpens var. montevidensis (Boiss.) Cabrera – not accepted   Euphorbia serpens var. ovalifolia (Engelm. ex Klotzsch) Allem – not accepted   Euphorbia serpens var. radicans Englm. ex Boiss. – not accepted   Euphorbia serpentini Novák – accepted   Euphorbia serpicula Hiern – not accepted   Euphorbia serpiformis Boiss. – not accepted   Euphorbia serpyllifolia Pers. – accepted – thymeleaf sandmat   Euphorbia serpyllifolia ssp. hirtella (Engelm. ex S. Watson) Oudejans – not accepted   Euphorbia serpyllifolia var. consanguinea Boiss. – not accepted   Euphorbia serpyllifolia var. genuina Boiss. – not accepted   Euphorbia serpyllifolia var. hirtella (Engelm. ex S. Watson) L.C. Wheeler – accepted – thymeleaf sandmat   Euphorbia serpyllifolia var. hirtula (Engelm. ex S. Watson) L.C. Wheeler – accepted – Thymeleaf sandmat   Euphorbia serpyllifolia var. rugulosa Engelm. ex Millsp. – not accepted   Euphorbia serpyllifolia var. serpyllifolia Pers. – accepted – thymeleaf sandmat   Euphorbia serrata L. – accepted – serrate spurge, toothed spurge, saw-toothed spurge   Euphorbia serrata f. phylloclada (Lange) O. Bolòs & Vigo – not accepted   Euphorbia serrata f. subacaulis (Rouy) Oudejans – not accepted   Euphorbia serrata f. ternata (Cout.) Oudejans – not accepted   Euphorbia serrata var. phylloclada Lange – not accepted   Euphorbia serrata var. subacaulis Rouy – not accepted   Euphorbia serrata var. ternata Cout. – not accepted   Euphorbia serrata var. truncata Pers. – not accepted   Euphorbia serratifolia S. Carter – accepted   Euphorbia serrula Engelm. – accepted – sawtooth sandmat   Euphorbia serrulata Thuill. – not accepted   Euphorbia serrulata Vell. – not accepted   Euphorbia serrulata Reinw. ex Blume – not accepted   Euphorbia serrulata var. pubescens Warb. – not accepted   Euphorbia seshachalamensis K. Prasad & Prasanna – accepted   Euphorbia sessei Oudejans – not accepted   Euphorbia sessiliflora Roxb. – accepted   Euphorbia sessiliflora Boiss. & Spruner – not accepted   Euphorbia sessilifolia Klotzsch ex Boiss. – accepted   Euphorbia seticornis Poir. – not accepted   Euphorbia setigera E. Mey. – not accepted   Euphorbia setiloba Engelm. ex Torr. – accepted – Yuma sandmat, fringed spurge, shaggy spurge   Euphorbia setiloba var. dentata Engelm. ex Boiss. – not accepted   Euphorbia setiloba var. nodulosa Jeps. – not accepted   Euphorbia setispina S. Carter – accepted   Euphorbia setosa (Boiss.) Müll. Arg. – accepted   Euphorbia sewerzowii (Prokh.) Pavlov – accepted   Euphorbia sexangularis Henckel – not accepted   Euphorbia shaferi (Millsp.) L.G. Gonzáles & Bisse – not accepted   Euphorbia sharkoensis Baill. – accepted   Euphorbia sharmae U.C. Bhattach. – accepted   Euphorbia shebeliensis (M.G. Gilbert) Bruyns – accepted   Euphorbia shetoensis Pax & K. Hoffm. – not accepted   Euphorbia shirensis Baker f. – not accepted   Euphorbia shouanensis H. Keng – not accepted   Euphorbia sibirica Fisch. ex Boiss. – not accepted   Euphorbia sibthorpii Boiss. – not accepted   Euphorbia sieboldiana C. Morren & Decne. – accepted   Euphorbia sieboldiana f. peninsularis Hurus. – not accepted   Euphorbia sieboldiana f. sylvatica Hurus. – not accepted   Euphorbia sieboldiana var. grandifolia (Franch. & Sav. ex Hurus.) Oudejans – not accepted   Euphorbia sieboldiana var. idzuensis (Nakai ex Hurus.) Oudejans – not accepted   Euphorbia sieboldiana var. montana Tatew. – not accepted   Euphorbia sieboldiana var. ohsumiensis (Hurus.) Hatus. – not accepted   Euphorbia sieboldiana var. peninsularis (Hurus.) Kitag. – not accepted   Euphorbia sieboldiana var. sylvatica (Hurus.) Oudejans – not accepted   Euphorbia siguatepequensis Standl. – not accepted   Euphorbia sikkimensis Boiss. – accepted   Euphorbia sikkimensis ssp. bhutanica Fisch. – not accepted   Euphorbia silenifolia (Haw.) Sweet – accepted   Euphorbia siliciicola Dinter – not accepted   Euphorbia similiramea S. Carter – accepted   Euphorbia similis A. Berger – not accepted   Euphorbia simplex K. Koch – not accepted   Euphorbia simulans (L.C. Wheeler) Warnock & M.C. Johnst. – accepted – mimicking sandmat, similar spurge   Euphorbia sinaica Hochst. ex Boiss. – not accepted   Euphorbia sinaloensis Brandegee – accepted   Euphorbia sinanensis (Hurus.) T. Kuros. & H. Ohashi – not accepted   Euphorbia sinclairiana Benth. – accepted   Euphorbia sinensis Jesson & Turrill – not accepted   Euphorbia sintenisii Boiss. ex Freyn – accepted   Euphorbia sipolisii N.E. Br. – accepted   Euphorbia sistanica Dinelli & De Marco – not accepted   Euphorbia skottsbergii Sherff – accepted – coastal sandmat   Euphorbia skottsbergii var. audens Sherff – not accepted   Euphorbia skottsbergii var. kalaeloana Sherff – not accepted   Euphorbia skottsbergii var. skottsbergii Sherff – accepted – coastal sandmat   Euphorbia skottsbergii var. typica Sherff – not accepted   Euphorbia skottsbergii var. vaccinioides Sherff – accepted – coastal sandmat   Euphorbia sloanei L.C. Wheeler – not accepted   Euphorbia smallii Oudejans – not accepted   Euphorbia smirnovii Geltman – accepted   Euphorbia smithii S. Carter – accepted   Euphorbia socialis Zoll. – not accepted   Euphorbia socotrana Balf. f. – accepted   Euphorbia socotrana ssp. purpurea N. Kilian & P. Hein – accepted   Euphorbia socotrana ssp. socotrana Balf. f. – accepted   Euphorbia sogdiana Popov – accepted   Euphorbia sojakii (Chrtek & Krísa) Dubovik – accepted   Euphorbia soliflora Vis. ex Boiss. – not accepted   Euphorbia solisequa Rchb. – not accepted   Euphorbia somalensis Pax – accepted   Euphorbia somalensis var. nogalensis A. Hässl. – not accepted   Euphorbia songweana S. Carter – accepted   Euphorbia sonorae Rose – accepted   Euphorbia soobyi McVaugh – accepted   Euphorbia soongarica Boiss. – accepted   Euphorbia soongarica Hayek – not accepted   Euphorbia soongarica ssp. lamprocarpa (Prokh.) Prokh. – not accepted   Euphorbia sororia Schrenk – accepted   Euphorbia sparrmanii Boiss. – accepted   Euphorbia sparsiflora A. Heller – accepted – Wahiawa bog sandmat   Euphorbia sparsiglandulosa Ponert – accepted   Euphorbia spartaria N.E. Br. – accepted   Euphorbia spartiformis Mobayen – accepted   Euphorbia spartioides Jacq. – not accepted   Euphorbia spathulata Lam. – accepted – roughpod spurge, warty spurge   Euphorbia spathulata var. mexicana (Engelm.) Oudejans – not accepted   Euphorbia speciosa L.C. Leach – accepted   Euphorbia specksii Rauh – accepted   Euphorbia spectabilis (S. Carter) Bruyns – accepted   Euphorbia spellenbergiana Mayfield & V.W. Steinm. – accepted   Euphorbia sphaerococca Salzm. ex Rchb. – not accepted   Euphorbia sphaerorhiza Benth. – accepted   Euphorbia sphaerosperma Shuttlew. ex Boiss. – not accepted   Euphorbia spicata E. Mey. ex Boiss. – accepted   Euphorbia spinea N.E. Br. – accepted   Euphorbia spinescens Pax – not accepted   Euphorbia spinicapsula Rauh & Petignat – not accepted   Euphorbia spinidens (Prokh.) Bornm. ex Prokh. – accepted   Euphorbia spinosa L. – accepted   Euphorbia spinosa f. ligustica Fiori – not accepted   Euphorbia spinosa ssp. ligustica (Fiori) Pignatti – accepted   Euphorbia spinosa ssp. melitensis (Parl.) Nyman – not accepted   Euphorbia spinosa ssp. spinosa L. – accepted   Euphorbia spinosa var. bivonae (Steud.) Fiori – not accepted   Euphorbia spinosa var. brachyadenia Boiss. – not accepted   Euphorbia spinosa var. inermis Boiss. – not accepted   Euphorbia spinosa var. melitensis (Parl.) Fiori – not accepted   Euphorbia spinosa var. montana (Lojac.) Fiori – not accepted   Euphorbia spinulosa (S. Carter) Bruyns – accepted   Euphorbia spiralis Balf. f. – accepted   Euphorbia spissa Thulin – accepted   Euphorbia spissiflora S. Carter – accepted   Euphorbia splendens Bojer ex Hook. – not accepted   Euphorbia splendens ssp. bojeri (Hook.) Denis – not accepted   Euphorbia splendens var. betsileana Leandri – not accepted   Euphorbia splendens var. bevilaniensis (Croizat) Leandri – not accepted   Euphorbia splendens var. bojeri (Hook.) Costantin & Gallaud – not accepted   Euphorbia splendens var. breonii (Nois.) Leandri – not accepted   Euphorbia splendens var. hislopii (N.E. Br.) Leandri – not accepted   Euphorbia splendens var. imperatae Leandri – not accepted   Euphorbia splendens var. tananarivae Leandri – not accepted   Euphorbia splendens var. vulcani Leandri – not accepted   Euphorbia spongiosa Ledeb. ex Schrank – not accepted   Euphorbia spruceana Boiss. – accepted   Euphorbia squamigera Loisel. – accepted   Euphorbia squamigera ssp. clementei (Boiss.) Losa & Vindt – not accepted   Euphorbia squamigera ssp. margalidiana (Kuhbier & Lewej.) O. Bolòs & Vigo – not accepted   Euphorbia squamigera var. carthaginiensis (Porta & Rigo) O. Bolòs & Vigo – not accepted   Euphorbia squamigera var. faurei Maire – not accepted   Euphorbia squamigera var. mentagensis Maire – not accepted   Euphorbia squamigera var. montgoi O. Bolòs & Vigo – not accepted   Euphorbia squamigera var. pseudatlantica Maire – not accepted   Euphorbia squamigera var. rupicola (Boiss.) Maire – not accepted   Euphorbia squamosa Willd. – accepted   Euphorbia squamosa var. serrata (Boiss.) Oudejans – not accepted   Euphorbia squamosa var. talyschensis (Boiss. & Buhse) Oudejans – not accepted   Euphorbia squamosa var. wilhelmsiana (K. Koch) Oudejans – not accepted   Euphorbia squarrosa Haw. – not accepted   Euphorbia standleyi (Millsp.) Oudejans – accepted   Euphorbia stanfieldii (Small) Cory – not accepted   Euphorbia stapelioides Boiss. – accepted   Euphorbia stapfii A. Berger – accepted   Euphorbia stegmatica Nel – not accepted   Euphorbia stellata Willd. – accepted   Euphorbia stellispina Haw. – accepted   Euphorbia stellulata Salzm. – not accepted   Euphorbia stenocaulis Bruyns – accepted   Euphorbia stenoclada Baill. – accepted   Euphorbia stenoclada ssp. ambatofinandranae (Leandri) Cremers – accepted   Euphorbia stenoclada ssp. stenoclada Baill. – accepted   Euphorbia stenomeres S.F. Blake – not accepted   Euphorbia stenophylla (Klotzsch & Garcke) Boiss. – accepted   Euphorbia stepposa Zoz – accepted   Euphorbia stevenii F.M. Bailey – accepted   Euphorbia stevensii A. Stewart – not accepted   Euphorbia steyermarkii Standl. – not accepted   Euphorbia stictospora Engelm. – accepted – slimseed sandmat, mat spurge, narrow-seeded spurge   Euphorbia stictospora var. stictospora Engelm. – accepted   Euphorbia stictospora var. sublaevis M.C. Johnst. – accepted   Euphorbia stipitata Millsp. – not accepted   Euphorbia stipulacea Engelm. ex Boiss. – not accepted   Euphorbia stocksiana Boiss. – not accepted   Euphorbia stocksiana var. ovata Boiss. – not accepted   Euphorbia stoddartii Fosberg – accepted   Euphorbia stokesii C.N. Forbes – not accepted   Euphorbia stolonifera Marloth ex A.C. White, R.A. Dyer & B. Sloane – accepted   Euphorbia stormiae Croizat – not accepted   Euphorbia stracheyi Boiss. – accepted   Euphorbia strangulata N.E. Br. – accepted   Euphorbia striata Thunb. – accepted   Euphorbia striata Boiss. – not accepted   Euphorbia striata var. brachyphylla Boiss. – not accepted   Euphorbia striata var. cuspidata Boiss. – accepted   Euphorbia striata var. striata Thunb. – accepted   Euphorbia striatella Boiss. – not accepted   Euphorbia striatella var. microsciadia (Boiss.) Boiss. – not accepted   Euphorbia striatella var. persepolitana (Boiss.) Boiss. – not accepted   Euphorbia stricta L. – accepted   Euphorbia stricta f. pubescens (Erdner) Oudejans – not accepted   Euphorbia stricta ssp. micrantha (Stephan ex Willd.) Nyman – not accepted   Euphorbia stricta var. dubia (Dierb.) Nyman – not accepted   Euphorbia stricta var. pubescens Erdner – not accepted   Euphorbia strictior Holz. – accepted – panhandle spurge   Euphorbia strigosa Hook. & Arn. – accepted   Euphorbia strobilifera Dalzell – not accepted   Euphorbia stuhlmannii Pax – not accepted   Euphorbia stuhlmannii Schweinf. ex Volkens – not accepted   Euphorbia sturii Holuby ex Velen – not accepted   Euphorbia stygiana H.C. Watson – accepted   Euphorbia stygiana ssp. santamariae H. Schäf. – accepted   Euphorbia stygiana ssp. stygiana H.C. Watson – accepted   Euphorbia suareziana Croizat – not accepted   Euphorbia subamplexicaulis Kar. & Kir. – accepted   Euphorbia subapoda Baill. – not accepted   Euphorbia subcaerulea B.L. Rob. & Greenm. – not accepted   Euphorbia subcaerulea var. tresmariae Millsp. – not accepted   Euphorbia subciliata Pers. – not accepted   Euphorbia subcordata Ledeb. – accepted   Euphorbia subcordata (Klotzsch & Garcke) Schur – not accepted   Euphorbia subcordata var. eriophylla (Kar. & Kir.) Boiss. – not accepted   Euphorbia subfalcata Hiern – not accepted   Euphorbia subhastata Vis. & Pancic – not accepted   Euphorbia submamillaris (A. Berger) A. Berger – not accepted   Euphorbia suborbicularis Thulin – accepted   Euphorbia subpeltata S. Watson – accepted   Euphorbia subpeltatophylla Rauh – accepted   Euphorbia subpubens Engelm. ex S. Watson – not accepted   Euphorbia subreniformis S. Watson – accepted   Euphorbia subsalsa Hiern – accepted   Euphorbia subsalsa ssp. fluvialis L.C. Leach – accepted   Euphorbia subsalsa ssp. subsalsa Hiern – accepted   Euphorbia subsalsa var. kaokoensis A.C. White, R.A. Dyer & B. Sloane – not accepted   Euphorbia subscandens P.R.O. Bally & S. Carter – accepted   Euphorbia subserrata Engelm. ex Boiss. – not accepted   Euphorbia subterminalis N.E. Br. – accepted   Euphorbia subtilis (Prokh.) Prokh. – accepted   Euphorbia subtrifoliata Rusby – accepted   Euphorbia subtuberculata C.A. Mey. ex Boiss. – not accepted   Euphorbia subulatifolia Hurus. – not accepted   Euphorbia subumbellata Steud. ex Boiss. – not accepted   Euphorbia succedanea L.C. Wheeler – accepted   Euphorbia succulenta (Schweick.) Bruyns – accepted   Euphorbia succulenta var. congesta (P.R.O. Bally) Bruyns – accepted   Euphorbia succulenta var. succulenta (Schweick.) Bruyns – accepted   Euphorbia sudanica A. Chev. – accepted   Euphorbia suffruticosa Forssk. – not accepted   Euphorbia suffruticulosa Lecoq & Lamotte – not accepted   Euphorbia suffulta Bruyns – accepted   Euphorbia sulcata Lens ex Loisel. – accepted   Euphorbia sulcata Lem. ex Boiss. – not accepted   Euphorbia sulcata var. maroccana Molero, Rovira & Vicens – not accepted   Euphorbia sulphurea Pahlevani – accepted   Euphorbia sultan-hassei Strid, Bentzer, Bothmer, Engstrand & M.A. Gust. – accepted   Euphorbia sumati S. Carter – accepted   Euphorbia sumbawensis Boiss. – accepted   Euphorbia supina Raf. – not accepted   Euphorbia surinamensis Lanj. – accepted   Euphorbia susan-holmesiae Binojk. & Gopalan – accepted   Euphorbia susannae Marloth – accepted   Euphorbia suzannae-marnierae Rauh & Petignat – accepted   Euphorbia sventenii Marcet – not accepted   Euphorbia swatensis Kitam. – not accepted   Euphorbia sylvatica L. – not accepted   Euphorbia sylvatica subvar. purpurata Coss. & Germ. – not accepted   Euphorbia sylvatica var. minor Gaudin – not accepted   Euphorbia symmetrica A.C. White, R.A. Dyer & B. Sloane – not accepted   Euphorbia synadenia Baill. – not accepted   Euphorbia synadenium Ridl. – not accepted   Euphorbia syncalycina Bruyns – accepted   Euphorbia syncameronii Bruyns – accepted   Euphorbia syriaca Spreng. – not accepted   Euphorbia syrmiensis Kit. – not accepted   Euphorbia syspirensis K. Koch – not accepted   Euphorbia systyla Edgew. – accepted   Euphorbia systyloides Pax – accepted   Euphorbia systyloides ssp. porcaticapsa S. Carter – accepted   Euphorbia systyloides ssp. systyloides Pax – accepted   Euphorbia systyloides var. hebecarpa (Pax) N.E. Br. – not accepted   Euphorbia systyloides var. lata N.E. Br. – not accepted   Euphorbia systyloides var. pedunculata N.E. Br. – not accepted   Euphorbia szechuanica Pax & K. Hoffm. – not accepted   Euphorbia szovitsii Fisch. & C.A. Mey. – accepted   Euphorbia szovitsii var. kharputensis Azn. ex M.S. Khan – accepted   Euphorbia szovitsii var. szovitsii Fisch. & C.A. Mey. – accepted   Euphorbia taboraensis A. Hässl. – accepted   Euphorbia tacnensis Phil. – accepted   Euphorbia taifensis Fayed & D. Al-Zahrani – accepted – Amaq, Amaqah, Amaqat al-ghanam   Euphorbia taihsiensis (Chaw & Koutnik) Oudejans – accepted   Euphorbia taitensis Boiss. – not accepted   Euphorbia taitensis Pax – not accepted   Euphorbia taitensis var. stenhymenia Boiss. – not accepted   Euphorbia taiwaniana S.S. Ying – not accepted   Euphorbia takouensis H. Lév. & Vaniot – not accepted   Euphorbia talaina Radcl.-Sm. – accepted   Euphorbia talastavica (Prokh.) Prokh. – accepted   Euphorbia taluticola Wiggins – accepted   Euphorbia talyschensis Boiss. & Buhse – not accepted   Euphorbia tamanduana Boiss. – accepted   Euphorbia tamaulipasana (Millsp.) Oudejans – accepted   Euphorbia tanaensis P.R.O. Bally & S. Carter – accepted   Euphorbia tanaicensis Guss. – not accepted   Euphorbia tanaitica Pacz. – not accepted   Euphorbia tangutica Prokh. – not accepted   Euphorbia tannensis Spreng. – accepted   Euphorbia tannensis ssp. eremophila (A. Cunn. ex Hook.) D.C. Hassall – accepted   Euphorbia tannensis ssp. tannensis Spreng. – accepted   Euphorbia tannensis var. eremophila (A. Cunn. ex Hook.) D.C. Hassall – not accepted   Euphorbia tannensis var. finlaysonii (J.M. Black) D.C. Hassall – not accepted   Euphorbia tanquahuete Sessé & Moç. – accepted – Leche Maria, Palo cucaracha, Palo mulato, Palo amarillo   Euphorbia taourirtensis Batt. & Trab. – not accepted   Euphorbia taquetii H. Lév. & Vaniot – not accepted   Euphorbia tarapacana Phil. – accepted   Euphorbia tardieuana Leandri – accepted   Euphorbia tarokoensis Hayata – not accepted   Euphorbia taruensis S. Carter – accepted   Euphorbia tashiroi Hayata – not accepted   Euphorbia tatarica Jacquem. ex Boiss. – not accepted   Euphorbia tatianae Fed. – not accepted   Euphorbia taurica (Besser) Steud. – not accepted   Euphorbia tauricola Prokh. – accepted   Euphorbia taurinensis All. – accepted   Euphorbia taurinensis f. isophylla (K. Malý) Kuzmanov – not accepted   Euphorbia taurinensis var. brachyceras (Candargy) Oudejans – not accepted   Euphorbia taurinensis var. isophylla (K. Malý) Oudejans – not accepted   Euphorbia tavoyensis N.P. Balakr. – accepted   Euphorbia taxifolia Burm. f. – not accepted   Euphorbia tchen-ngoi (Soják) Radcl.-Sm. – not accepted   Euphorbia teheranica Boiss. – accepted   Euphorbia tehuacana (Brandegee) V.W. Steinm. – accepted   Euphorbia teixeirae L.C. Leach – accepted   Euphorbia teke Schweinf. ex Pax – accepted   Euphorbia telephioides Chapm. – accepted – Telephus spurge   Euphorbia tenax Burch. – accepted   Euphorbia tenella Pax – not accepted   Euphorbia tenella Kunth – not accepted   Euphorbia tenera S. Watson – not accepted   Euphorbia tenuicaulis Range – not accepted   Euphorbia tenuicuspis Guss. ex Rchb. – not accepted   Euphorbia tenuirama Schweinf. ex A. Berger – accepted   Euphorbia tenuis Buch.-Ham. ex D. Don – not accepted   Euphorbia tenuispinosa Gilli – accepted   Euphorbia tenuispinosa var. robusta P.R.O. Bally & S. Carter – accepted   Euphorbia tenuispinosa var. tenuispinosa Gilli – accepted   Euphorbia tenuissima M.E. Jones – not accepted   Euphorbia teres M. Machado & Hofacker – accepted   Euphorbia terracina L. – accepted – Geraldton carnation weed, Terracina spurge, carnation spurge   Euphorbia terracina Lag. – not accepted   Euphorbia terracina f. angustifolia Batt. – not accepted   Euphorbia terracina var. alexandrina (Delile) El-Kanemy – not accepted   Euphorbia terracina var. delortii Timb.-Lagr. ex Nyman – not accepted   Euphorbia terracina var. ecarunculata Boiss. – not accepted   Euphorbia terracina var. mendax (Maire & Wilczek) Maire – not accepted   Euphorbia terracina var. modesta (Boiss.) Boiss. – not accepted   Euphorbia terracina var. ramosissima (Loisel.) Nyman – not accepted   Euphorbia terracina var. variicornis Maire & Sennen – not accepted   Euphorbia tescorum S. Carter – accepted   Euphorbia teskensuensis Orazova – accepted   Euphorbia tessellata (Haw.) Steud. – not accepted   Euphorbia tetracantha Rendle – accepted   Euphorbia tetracantha Pax – not accepted   Euphorbia tetracanthoides Pax – accepted   Euphorbia tetraceras Lange – not accepted   Euphorbia tetragona Haw. – accepted   Euphorbia tetrapora Engelm. – accepted – weak spurge   Euphorbia tetrapora var. berlandieri Boiss. – not accepted   Euphorbia tetraptera Baker – accepted   Euphorbia tetraptera var. robusta Leandri – accepted   Euphorbia tetraptera var. tetraptera Baker – accepted