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Euphorbia  L.
Taxonomic Serial No.: 28032

(Download Help) Euphorbia TSN 28032

 Taxonomy and Nomenclature
       
  Kingdom: Plantae  
  Taxonomic Rank: Genus  
  Synonym(s): Chamaesyce Gray
 
    Galarhoeus Haw.
 
    Pedilanthus Neck. ex Poit.
 
    Desmonema Raf.
 
    Cyathophora Raf.
 
    Kobiosis Raf.
 
    Lacanthis Raf.
 
    Athymalus Neck.
 
    Lepadena Raf.
 
    Tithymalus Ség.
 
    Euphorbion St.-Lag.
 
    Leptopus Klotzsch & Garcke
 
    Cystidospermum Prokh.
 
    Lophobios Raf.
 
    Dactylanthes Haw.
 
    Torfasidis Raf.
 
    Treisia Haw.
 
    Eumecanthus Klotzsch & Garcke
 
    Lyciopsis (Boiss.) Schweinf.
 
    Vallaris Raf.
 
    Zygophyllidium Small
 
    Zalitea Raf.
 
    Monadenium Pax
 
    Diadenaria Klotzsch & Garcke
 
    Dematra Raf.
 
    Xamesike Raf.
 
    Trichosterigma Klotzsch & Garcke
 
    Ventenatia Tratt.
 
    Lortia Rendle
 
    Hexadenia Klotzsch & Garcke
 
    Galorhoeus Endl.
 
    Tumalis Raf.
 
    Poinsettia Graham
 
    Medusea Haw.
 
    Tithymalodes Ludw. ex Kuntze
 
    Pleuradena Raf.
 
    Anisophyllum Haw.
 
    Adenopetalum Klotzsch & Garcke
 
    Petaloma Raf. ex Boiss.
 
    Synadenium Boiss.
 
    Tithymalus Gaertn.
 
    Sterigmanthe Klotzsch & Garcke
 
    Alectoroctonum Schltdl.
 
    Tithymalopsis Klotzsch & Garcke
 
    Tithymaloides Ortega
 
    Euphorbiodendron Millsp.
 
    Euphorbiastrum Klotzsch & Garcke
 
    Tithymalus Mill.
 
    Aklema Raf.
 
    Euphorbium Hill
 
    Ctenadena Prokh.
 
    Keraselma Neck.
 
    Kanopikon Raf.
 
    Anthacantha Lem.
 
    Chylogala Fourr.
 
    Cubanthus Millsp.
 
    Arthrothamnus Klotzsch & Garcke
 
    Characias Gray
 
    Pythius Raf.
 
    Aplarina Raf.
 
    Sclerocyathium Prokh.
 
    Stenadenium Pax
 
    Crepidaria Haw.
 
    Adenorima Raf.
 
    Allobia Raf.
 
    Epurga Fourr.
 
    Elaeophorbia Stapf
 
    Ditritra Raf.
 
    Dichylium Britton
 
    Diplocyathium Heinr. Schmidt
 
    Murtekias Raf.
 
    Nisomenes Raf.
 
    Peccana Raf.
 
    Tirucalia Raf.
 
    Agaloma Raf.
 
    Endadenium L.C. Leach
 
    Endoisila Raf.
 
    Esula Haw.
 
    Crepidaria cordellata (Haw.) Haw.
 
    Euphorbia glauca Steud.
 
    Tithymalus glaucus Moench
 
    Pedilanthus cordatus Spreng.
 
    Pedilanthus cordellatus (Haw.) Sweet
 
    Tithymalodes cordellata (Haw.) Kuntze
 
    Euphorbia cordellata Haw.
 
    Euphorbia moenchiana Steud.
 
  Common Name(s): spurge [English]
 
       
  Taxonomic Status:    
  Current Standing: accepted  
       
  Data Quality Indicators:    
  Record Credibility Rating: verified - standards met  
  Global Species Completeness: complete   
  Latest Record Review: 2016   
       

 Taxonomic Hierarchy
       
 KingdomPlantae  – plantes, Planta, Vegetal, plants  
    SubkingdomViridiplantae   
       InfrakingdomStreptophyta  – land plants  
          SuperdivisionEmbryophyta   
             DivisionTracheophyta  – vascular plants, tracheophytes  
                SubdivisionSpermatophytina  – spermatophytes, seed plants, phanérogames  
                   ClassMagnoliopsida   
                      SuperorderRosanae   
                         OrderMalpighiales   
                            FamilyEuphorbiaceae  – spurge, euphorbes  
                               GenusEuphorbia L. – spurge  
    Direct Children:  
                                  Species Euphorbia aaron-rossii A.H. Holmgren & N.H. Holmgren – Marble Canyon spurge, Ross spurge 
                                  Species Euphorbia abbottii Baker  
                                  Species Euphorbia abdelkuri Balf. f. – Firhadh 
                                  Species Euphorbia abdita (D.G. Burch) Radcl.-Sm.  
                                  Species Euphorbia abdulghafooriana Abedin  
                                  Species Euphorbia abramsiana L.C. Wheeler – Abrams' sandmat 
                                  Species Euphorbia abscondita Mayfield  
                                  Species Euphorbia abyssinica J.F. Gmel.  
                                  Species Euphorbia acalyphoides Hochst. ex Boiss.  
                                  Species Euphorbia acanthodes Akhani  
                                  Species Euphorbia acanthothamnos Heldr. & Sart. ex Boiss.  
                                  Species Euphorbia acerensis Boiss.  
                                  Species Euphorbia acervata S. Carter  
                                  Species Euphorbia actinoclada S. Carter  
                                  Species Euphorbia acuta Engelm. – Pointed sandmat 
                                  Species Euphorbia adenochila S. Carter  
                                  Species Euphorbia adenochlora C. Morren & Decne.  
                                  Species Euphorbia adenopoda Baill.  
                                  Species Euphorbia adenoptera Bertol. – southern Florida sandmat 
                                  Species Euphorbia adiantoides Lam.  
                                  Species Euphorbia adjurana P.R.O. Bally & S. Carter  
                                  Species Euphorbia aequoris N.E. Br.  
                                  Species Euphorbia aeruginosa Schweick.  
                                  Species Euphorbia agatheae Haevermans  
                                  Species Euphorbia aggregata A. Berger  
                                  Species Euphorbia agowensis Hochst. ex Boiss.  
                                  Species Euphorbia agraria M. Bieb. – urban spurge 
                                  Species Euphorbia akenocarpa Guss.  
                                  Species Euphorbia akmanii I. Genç & Kültür  
                                  Species Euphorbia alaica (Prokh.) Prokh.  
                                  Species Euphorbia alainii Oudejans  
                                  Species Euphorbia alata Hook.  
                                  Species Euphorbia alatavica Boiss.  
                                  Species Euphorbia alatocaulis V.W. Steinm. & Felger  
                                  Species Euphorbia albanica N.E. Br.  
                                  Species Euphorbia albipollinifera L.C. Leach  
                                  Species Euphorbia albomarginata Torr. & A. Gray – whitemargin sandmat, Rattlesnake weed, white-margin sandmat, white-margin sandwort 
                                  Species Euphorbia alcicornis Baker  
                                  Species Euphorbia aleppica L.  
                                  Species Euphorbia alfredii Rauh  
                                  Species Euphorbia allocarpa S. Carter  
                                  Species Euphorbia alluaudii Drake  
                                  Species Euphorbia alpina Ledeb.  
                                  Species Euphorbia alsiniflora Baill.  
                                  Species Euphorbia alsinifolia Boiss.  
                                  Species Euphorbia alsinoides Miq.  
                                  Species Euphorbia alta Norton – giant spurge 
                                  Species Euphorbia altaica Ledeb.  
                                  Species Euphorbia altissima Boiss.  
                                  Species Euphorbia altotibetica Paulsen  
                                  Species Euphorbia amandi Oudejans  
                                  Species Euphorbia amarifontana N.E. Br.  
                                  Species Euphorbia ambacensis N.E. Br.  
                                  Species Euphorbia ambarivatoensis Rauh & Bard.-Vauc.  
                                  Species Euphorbia X ambohipotsiensis Ursch & Leandri  
                                  Species Euphorbia ambovombensis Rauh & Razaf.  
                                  Species Euphorbia ambroseae L.C. Leach  
                                  Species Euphorbia amicorum S. Carter  
                                  Species Euphorbia ammak Schweinf.  
                                  Species Euphorbia ammophila S. Carter & Dioli  
                                  Species Euphorbia amplexicaulis Hook. f.  
                                  Species Euphorbia amplophylla Pax  
                                  Species Euphorbia amygdaloides L.  
                                  Species Euphorbia anacampseros Boiss.  
                                  Species Euphorbia anachoreta Svent.  
                                  Species Euphorbia analalavensis Leandri  
                                  Species Euphorbia analamerae Leandri  
                                  Species Euphorbia analavelonensis Rauh & Mangelsdorff  
                                  Species Euphorbia andrachnoides Schrenk  
                                  Species Euphorbia X andrefandrovana Ursch & Leandri  
                                  Species Euphorbia androsaemifolia Willd. ex Schlecht.  
                                  Species Euphorbia angrae N.E. Br.  
                                  Species Euphorbia angularis Klotzsch  
                                  Species Euphorbia angulata Jacq.  
                                  Species Euphorbia angusta Engelm. – Blackfoot sandmat, narrow-leaf spurge 
                                  Species Euphorbia X angustata (Rochel) Simonk.  
                                  Species Euphorbia angustiflora Pax  
                                  Species Euphorbia X angustifrons Borbás  
                                  Species Euphorbia anisopetala (Prokh.) Prokh.  
                                  Species Euphorbia ankaranae Leandri  
                                  Species Euphorbia ankarensis Boiteau  
                                  Species Euphorbia ankazobensis Rauh & Hofstätter  
                                  Species Euphorbia annamarieae Rauh  
                                  Species Euphorbia anthonyi Brandegee  
                                  Species Euphorbia anthula Lavrent. & Papan.  
                                  Species Euphorbia antilibanotica Mouterde  
                                  Species Euphorbia antiquorum L.  
                                  Species Euphorbia antisyphilitica Zucc. – candelilla 
                                  Species Euphorbia antonii Oudejans  
                                  Species Euphorbia antso Denis – Antso 
                                  Species Euphorbia anychioides Boiss.  
                                  Species Euphorbia apatzingana McVaugh  
                                  Species Euphorbia aphylla Brouss. ex Willd.  
                                  Species Euphorbia apicata L.C. Wheeler  
                                  Species Euphorbia apios L.  
                                  Species Euphorbia appariciana Rizzini  
                                  Species Euphorbia appendiculata P.R.O. Bally & S. Carter  
                                  Species Euphorbia applanata Thulin & Al-Gifri  
                                  Species Euphorbia aprica Baill.  
                                  Species Euphorbia apurimacensis Croizat  
                                  Species Euphorbia arabica Hochst. & Steud. ex Anderson  
                                  Species Euphorbia arabicoides N.E. Br.  
                                  Species Euphorbia arahaka Poiss. – Arahaka, Arahaky 
                                  Species Euphorbia araucana Phil.  
                                  Species Euphorbia arbuscula Balf. f.  
                                  Species Euphorbia ardonensis Galushko  
                                  Species Euphorbia arenaria Kunth  
                                  Species Euphorbia arenarioides Gagnep.  
                                  Species Euphorbia argillosa Chodat & Hassl.  
                                  Species Euphorbia arguta Banks & Sol.  
                                  Species Euphorbia arida N.E. Br.  
                                  Species Euphorbia ariensis Kunth  
                                  Species Euphorbia aristata Schmalh.  
                                  Species Euphorbia arizonica Engelm. – Arizona sandmat 
                                  Species Euphorbia armourii Millsp.  
                                  Species Euphorbia armstrongiana Boiss.  
                                  Species Euphorbia arnottiana Endl. – `akoko 
                                  Species Euphorbia arrecta N.E. Br.  
                                  Species Euphorbia arteagae W.R. Buck & Huft  
                                  Species Euphorbia artifolia N.E. Br.  
                                  Species Euphorbia arvalis Boiss. & Heldr.  
                                  Species Euphorbia asclepiadea Milne-Redh.  
                                  Species Euphorbia aserbajdzhanica Bordz.  
                                  Species Euphorbia aspericaulis Pax  
                                  Species Euphorbia asthenacantha S. Carter  
                                  Species Euphorbia astrachanica C.A. Mey. ex Claus  
                                  Species Euphorbia astyla Engelm. ex Boiss. – alkali sandmat, Pecos spurge 
                                  Species Euphorbia atoto G. Forst.  
                                  Species Euphorbia atrocarmesina L.C. Leach  
                                  Species Euphorbia atrococca A. Heller – koko 
                                  Species Euphorbia atroflora S. Carter  
                                  Species Euphorbia atropurpurea Brouss. ex Willd.  
                                  Species Euphorbia atrox F.K. Horw. ex S. Carter  
                                  Species Euphorbia attastoma Rizzini  
                                  Species Euphorbia aucheri Boiss.  
                                  Species Euphorbia audissoui Marx  
                                  Species Euphorbia aulacosperma Boiss.  
                                  Species Euphorbia aureoviridiflora (Rauh) Rauh  
                                  Species Euphorbia australis Boiss.  
                                  Species Euphorbia austriaca A. Kern.  
                                  Species Euphorbia austro-occidentalis Thell.  
                                  Species Euphorbia austroanatolica Hub.-Mor. & M.S. Khan  
                                  Species Euphorbia austrotexana Mayfield  
                                  Species Euphorbia avasmontana Dinter  
                                  Species Euphorbia awashensis M.G. Gilbert  
                                  Species Euphorbia azorica Hochst. – Erva-leitera 
                                  Species Euphorbia baetica Boiss.  
                                  Species Euphorbia baga A. Chev.  
                                  Species Euphorbia bahiensis (Klotzsch & Garcke) Boiss.  
                                  Species Euphorbia baioensis S. Carter  
                                  Species Euphorbia balakrishnanii Binojk. & Gopalan  
                                  Species Euphorbia baleensis M.G. Gilbert  
                                  Species Euphorbia X balfourii Sennen  
                                  Species Euphorbia ballyana Rauh  
                                  Species Euphorbia ballyi S. Carter  
                                  Species Euphorbia balsamifera Aiton  
                                  Species Euphorbia banae Rauh  
                                  Species Euphorbia baradii S. Carter  
                                  Species Euphorbia barbicollis P.R.O. Bally  
                                  Species Euphorbia bariensis S. Carter  
                                  Species Euphorbia barnardii A.C. White, R.A. Dyer & B. Sloane  
                                  Species Euphorbia barnesii (Millsp.) Oudejans  
                                  Species Euphorbia barrelieri Savi  
                                  Species Euphorbia bartolomaei Greene  
                                  Species Euphorbia basarabica Prodán  
                                  Species Euphorbia basargica Prodán  
                                  Species Euphorbia baueri Engelm. ex Boiss.  
                                  Species Euphorbia bayeri L.C. Leach  
                                  Species Euphorbia baylissii L.C. Leach  
                                  Species Euphorbia X bazargica Prodán  
                                  Species Euphorbia beamanii M.C. Johnst.  
                                  Species Euphorbia beckii V.W. Steinm.  
                                  Species Euphorbia beharensis Leandri  
                                  Species Euphorbia beillei A. Chev.  
                                  Species Euphorbia bemarahaensis Rauh & Mangelsdorff  
                                  Species Euphorbia benthamii Hiern  
                                  Species Euphorbia berevoensis Lawant & Buddens.  
                                  Species Euphorbia berorohae Rauh & Hofstätter  
                                  Species Euphorbia berotica N.E. Br.  
                                  Species Euphorbia bertemariae Bisseret & Dioli  
                                  Species Euphorbia berteroana Balb. ex Spreng. – Bertero's sandmat 
                                  Species Euphorbia berthelotii Bolle ex Boiss.  
                                  Species Euphorbia berythea Boiss. & Blanche  
                                  Species Euphorbia besseri (Klotzsch & Garcke) Boiss.  
                                  Species Euphorbia betacea Baill.  
                                  Species Euphorbia betulicortex M.G. Gilbert  
                                  Species Euphorbia beuginii Rebmann  
                                  Species Euphorbia biaculeata Denis  
                                  Species Euphorbia bianoensis (Malaisse & Lecron) Bruyns  
                                  Species Euphorbia bicolor Engelm. & A. Gray – snow on the prairie, snow-on-the-prairie 
                                  Species Euphorbia bicompacta Bruyns  
                                  Species Euphorbia biconvexa Domin  
                                  Species Euphorbia bifida Hook. & Arn.  
                                  Species Euphorbia bifurcata Engelm. – forked spurge 
                                  Species Euphorbia biharamulensis S. Carter  
                                  Species Euphorbia bilobata Engelm. – blackseed spurge, black-seed spurge 
                                  Species Euphorbia bindloensis (A. Stewart) Ya Yang  
                                  Species Euphorbia biselegans Bruyns  
                                  Species Euphorbia bisellenbeckii Bruyns  
                                  Species Euphorbia bisglobosa Bruyns  
                                  Species Euphorbia bitataensis M.G. Gilbert  
                                  Species Euphorbia biumbellata Poir.  
                                  Species Euphorbia bivonae Steud.  
                                  Species Euphorbia blatteri Oudejans  
                                  Species Euphorbia blepharophylla Ledeb.  
                                  Species Euphorbia blodgettii Engelm. ex Hitchc. – limestone sandmat 
                                  Species Euphorbia bodenghieniae (Malaisse & Lecron) Bruyns  
                                  Species Euphorbia boerhaavioides Rusby  
                                  Species Euphorbia boinensis Denis ex Humbert & Leandri  
                                  Species Euphorbia boissieri Baill.  
                                  Species Euphorbia boiteaui Leandri  
                                  Species Euphorbia boivinii Boiss.  
                                  Species Euphorbia bokorensis H. Toyama & Tagane  
                                  Species Euphorbia bombensis Jacq. – Dixie sandmat 
                                  Species Euphorbia bongensis Kotschy & Peyr. ex Boiss.  
                                  Species Euphorbia bongolavensis Rauh  
                                  Species Euphorbia boophthona C.A. Gardner  
                                  Species Euphorbia borbonica Boiss.  
                                  Species Euphorbia borealis Baikov  
                                  Species Euphorbia borenensis M.G. Gilbert  
                                  Species Euphorbia borodinii Sambuk  
                                  Species Euphorbia bosseri Leandri  
                                  Species Euphorbia X bothae Lotsy & Goddijn  
                                  Species Euphorbia bougheyi L.C. Leach  
                                  Species Euphorbia bourgaeana J. Gay ex Boiss.  
                                  Species Euphorbia brachiata (E. Mey. ex Klotzsch & Garcke) Boiss.  
                                  Species Euphorbia brachycera Engelm. – horned spurge, shorthorn spurge 
                                  Species Euphorbia brachyphylla Denis  
                                  Species Euphorbia bracteata Jacq.  
                                  Species Euphorbia bracteolaris Boiss.  
                                  Species Euphorbia brakdamensis N.E. Br.  
                                  Species Euphorbia brandegeei Millsp.  
                                  Species Euphorbia brassii P.I. Forst.  
                                  Species Euphorbia braunsii N.E. Br.  
                                  Species Euphorbia bravoana Svent.  
                                  Species Euphorbia breviarticulata Pax  
                                  Species Euphorbia brevicornu Pax  
                                  Species Euphorbia brevirama N.E. Br.  
                                  Species Euphorbia brevis N.E. Br.  
                                  Species Euphorbia brevitorta P.R.O. Bally  
                                  Species Euphorbia briquetii Emb. & Maire  
                                  Species Euphorbia brunellii Chiov.  
                                  Species Euphorbia bruntii (Proctor) Oudejans  
                                  Species Euphorbia bruynsii L.C. Leach  
                                  Species Euphorbia bubalina Boiss.  
                                  Species Euphorbia buchtormensis Ledeb.  
                                  Species Euphorbia X budensis T. Simon  
                                  Species Euphorbia buhsei Boiss.  
                                  Species Euphorbia bulbispina Rauh & Razaf.  
                                  Species Euphorbia bungei Boiss.  
                                  Species Euphorbia bupleurifolia Jacq.  
                                  Species Euphorbia bupleuroides Desf.  
                                  Species Euphorbia burchellii Müll. Arg.  
                                  Species Euphorbia burgeri M.G. Gilbert  
                                  Species Euphorbia burkhartii Bacigalupo  
                                  Species Euphorbia burmanica Hook. f.  
                                  Species Euphorbia burmannii (Klotzsch & Garcke) E. Mey. ex Boiss.  
                                  Species Euphorbia buruana Pax  
                                  Species Euphorbia buschiana Grossh.  
                                  Species Euphorbia bussei Pax  
                                  Species Euphorbia buxoides Radcl.-Sm.  
                                  Species Euphorbia bwambensis S. Carter  
                                  Species Euphorbia cactus Ehrenb. ex Boiss.  
                                  Species Euphorbia caducifolia Haines  
                                  Species Euphorbia caeladenia Boiss.  
                                  Species Euphorbia caerulescens Haw.  
                                  Species Euphorbia caesia Kar. & Kir.  
                                  Species Euphorbia caespitosa Lam.  
                                  Species Euphorbia calamiformis P.R.O. Bally & S. Carter  
                                  Species Euphorbia calcarata (Schltdl.) V.W. Steinm.  
                                  Species Euphorbia calcicola Fernald  
                                  Species Euphorbia calderoniae V.W. Steinm.  
                                  Species Euphorbia californica Benth.  
                                  Species Euphorbia caloderma S. Carter  
                                  Species Euphorbia calyculata Kunth – Chupire, Tencuante 
                                  Species Euphorbia calyptrata Coss. & Durieu  
                                  Species Euphorbia camagueyensis (Millsp.) Urb.  
                                  Species Euphorbia cameronii N.E. Br.  
                                  Species Euphorbia canariensis L.  
                                  Species Euphorbia candelabrum Trémaux ex Kotschy  
                                  Species Euphorbia cannellii L.C. Leach  
                                  Species Euphorbia caperata McVaugh  
                                  Species Euphorbia caperonioides R.A. Dyer & P.G. Mey.  
                                  Species Euphorbia capillaris Gagnep.  
                                  Species Euphorbia capitellata Engelm. – head sandmat, capitate sandmat, head spurge 
                                  Species Euphorbia capitulata Rchb.  
                                  Species Euphorbia capmanambatoensis Rauh  
                                  Species Euphorbia capsaintemariensis Rauh  
                                  Species Euphorbia capuronii Ursch & Leandri  
                                  Species Euphorbia caput-aureum Denis  
                                  Species Euphorbia caput-medusae L.  
                                  Species Euphorbia carinifolia N.E. Br.  
                                  Species Euphorbia carinulata P.R.O. Bally & S. Carter  
                                  Species Euphorbia carissoides F.M. Bailey  
                                  Species Euphorbia carniolica Jacq.  
                                  Species Euphorbia carpatica Wol.  
                                  Species Euphorbia carteriana P.R.O. Bally  
                                  Species Euphorbia carunculata Waterf. – sanddune sandmat, sand-dune spurge 
                                  Species Euphorbia carunculifera L.C. Leach  
                                  Species Euphorbia cashmeriana Royle  
                                  Species Euphorbia cassia Boiss.  
                                  Species Euphorbia cassythoides Boiss.  
                                  Species Euphorbia catamarcensis (Croizat) Subils  
                                  Species Euphorbia cataractarum S. Carter  
                                  Species Euphorbia catenata (S. Carter) Bruyns  
                                  Species Euphorbia caterviflora N.E. Br.  
                                  Species Euphorbia cattimandoo Elliot ex Wight  
                                  Species Euphorbia caudiculosa Boiss.  
                                  Species Euphorbia cayensis Millsp.  
                                  Species Euphorbia cedrorum Rauh & Hebding  
                                  Species Euphorbia celastroides Boiss. – `ekoko 
                                  Species Euphorbia celata R.A. Dyer  
                                  Species Euphorbia celerieri (Emb.) Emb. ex Vindt  
                                  Species Euphorbia centralis B.G. Thomson  
                                  Species Euphorbia centunculoides Kunth  
                                  Species Euphorbia ceratocarpa Ten.  
                                  Species Euphorbia cereiformis L.  
                                  Species Euphorbia ceroderma I.M. Johnst.  
                                  Species Euphorbia cerralvensis Maya-Lastra & V.W. Steinm.  
                                  Species Euphorbia cervicornu Baill.  
                                  Species Euphorbia cestrifolia Kunth  
                                  Species Euphorbia chaborasia Gomb.  
                                  Species Euphorbia chaetocalyx (Boiss.) Tidestr. – bristlecup sandmat 
                                  Species Euphorbia chamaeclada Ule  
                                  Species Euphorbia chamaepeplus Boiss. & Gaill.  
                                  Species Euphorbia chamaerrhodos Boiss.  
                                  Species Euphorbia chamaesula Boiss. – mountain spurge 
                                  Species Euphorbia chamaesyce L.  
                                  Species Euphorbia chamaesycoides B. Nord.  
                                  Species Euphorbia chamberlinii I.M. Johnst.  
                                  Species Euphorbia chamissonis (Klotzsch & Garcke) Boiss.  
                                  Species Euphorbia characias L. – Albanian spurge 
                                  Species Euphorbia charleswilsoniana V. Vlk  
                                  Species Euphorbia cheiradenia Boiss. & Hohen.  
                                  Species Euphorbia cheirolepis Fisch. & C.A. Mey. ex Ledeb.  
                                  Species Euphorbia chenopodiifolia Boiss.  
                                  Species Euphorbia chersina N.E. Br.  
                                  Species Euphorbia chersonesa Huft  
                                  Species Euphorbia chevalieri (N.E. Br.) Bruyns  
                                  Species Euphorbia chiribensis V.W. Steinm. & Felger  
                                  Species Euphorbia cibdela N.E. Br.  
                                  Species Euphorbia cinerascens Engelm. – ashy sandmat 
                                  Species Euphorbia citrina S. Carter  
                                  Species Euphorbia clandestina Jacq.  
                                  Species Euphorbia clarae (Malaisse & Lecron) Bruyns  
                                  Species Euphorbia clarkeana Hook. f.  
                                  Species Euphorbia classenii P.R.O. Bally & S. Carter  
                                  Species Euphorbia clava Jacq.  
                                  Species Euphorbia clavarioides Boiss.  
                                  Species Euphorbia clavidigitata Gage  
                                  Species Euphorbia clavigera N.E. Br.  
                                  Species Euphorbia claytonioides Pax  
                                  Species Euphorbia clementei Boiss.  
                                  Species Euphorbia clivicola R.A. Dyer  
                                  Species Euphorbia clusiifolia Hook. & Arn. – forest sandmat 
                                  Species Euphorbia coalcomanensis (Croizat) V.W. Steinm.  
                                  Species Euphorbia coccinea B. Heyne ex Roth  
                                  Species Euphorbia coerulans Pax  
                                  Species Euphorbia coghlanii F.M. Bailey  
                                  Species Euphorbia collenetteae D. Al-Zahrani & El-Karemy – Marar, Saab, Scharath 
                                  Species Euphorbia colletioides Benth.  
                                  Species Euphorbia colliculina A.C. White, R.A. Dyer & B. Sloane  
                                  Species Euphorbia colligata V.W. Steinm.  
                                  Species Euphorbia colorata Engelm.  
                                  Species Euphorbia colubrina P.R.O. Bally & S. Carter  
                                  Species Euphorbia columnaris P.R.O. Bally  
                                  Species Euphorbia commutata Engelm. ex A. Gray – tinted woodland spurge, tinted euphorbia 
                                  Species Euphorbia comosa Vell.  
                                  Species Euphorbia complanata Warb.  
                                  Species Euphorbia complexa R.A. Dyer  
                                  Species Euphorbia compressa Boiss.  
                                  Species Euphorbia concanensis Janarth. & S.R. Yadav  
                                  Species Euphorbia condylocarpa M. Bieb.  
                                  Species Euphorbia conferta (Small) B.E. Sm. – Everglade Key sandmat 
                                  Species Euphorbia confinalis R.A. Dyer  
                                  Species Euphorbia congestiflora L.C. Leach  
                                  Species Euphorbia coniosperma Boiss. & Buhse  
                                  Species Euphorbia connata Boiss.  
                                  Species Euphorbia consanguinea Schrenk  
                                  Species Euphorbia conspicua N.E. Br.  
                                  Species Euphorbia contorta L.C. Leach  
                                  Species Euphorbia convolvuloides Hochst. ex Benth.  
                                  Species Euphorbia conzattii V.W. Steinm.  
                                  Species Euphorbia cooperi N.E. Br. ex A. Berger – candelabra tree 
                                  Species Euphorbia copiapina Phil.  
                                  Species Euphorbia corallioides L.  
                                  Species Euphorbia cordatella Oudejans  
                                  Species Euphorbia cordeiroae P. Carrillo & V.W. Steinm.  
                                  Species Euphorbia cordifolia Elliott – heartleaf sandmat 
                                  Species Euphorbia cornastra (Dressler) Radcl.-Sm.  
                                  Species Euphorbia corniculata R.A. Dyer  
                                  Species Euphorbia cornigera Boiss.  
                                  Species Euphorbia corollata L. – floweringspurge euphorbia, flowering spurge 
                                  Species Euphorbia correllii M.C. Johnst.  
                                  Species Euphorbia correntina Parodi  
                                  Species Euphorbia corrigioloides Boiss.  
                                  Species Euphorbia corsica Req.  
                                  Species Euphorbia corymbosa N.E. Br.  
                                  Species Euphorbia cossoniana Boiss.  
                                  Species Euphorbia cotinifolia L. – Mexican shrubby spurge 
                                  Species Euphorbia cowellii (Millsp. ex Britton) Oudejans – Cowell's sandmat 
                                  Species Euphorbia cozumelensis Millsp.  
                                  Species Euphorbia craspedia Boiss.  
                                  Species Euphorbia crassinodis Urb.  
                                  Species Euphorbia crassipes Marloth  
                                  Species Euphorbia creberrima McVaugh  
                                  Species Euphorbia crebrifolia S. Carter  
                                  Species Euphorbia cremersii Rauh & Razaf.  
                                  Species Euphorbia crenata (N.E. Br.) Bruyns  
                                  Species Euphorbia crenulata Engelm. – Chinese caps, Chinesecaps 
                                  Species Euphorbia crepitata L.C. Wheeler  
                                  Species Euphorbia crepuscula (L.C. Wheeler) V.W. Steinm. & Felger  
                                  Species Euphorbia cressoides M.C. Johnst.  
                                  Species Euphorbia cristata B. Heyne ex Roth  
                                  Species Euphorbia croizatii Leandri  
                                  Species Euphorbia crossadenia Pax & K. Hoffm.  
                                  Species Euphorbia crotonoides Boiss.  
                                  Species Euphorbia crypta Ewest  
                                  Species Euphorbia cryptocaulis M.G. Gilbert  
                                  Species Euphorbia cryptorubra N.C. Taylor & M. Terry  
                                  Species Euphorbia cryptospinosa P.R.O. Bally  
                                  Species Euphorbia X csatoi (Simonk.) Borza  
                                  Species Euphorbia cubensis Boiss.  
                                  Species Euphorbia cumbrae Boiss.  
                                  Species Euphorbia cumulata R.A. Dyer  
                                  Species Euphorbia cumulicola (Small) Oudejans – coastal dune sandmat 
                                  Species Euphorbia cuneata Vahl  
                                  Species Euphorbia cuneifolia Guss.  
                                  Species Euphorbia cuneneana L.C. Leach  
                                  Species Euphorbia cuphosperma (Engelm.) Boiss. – hairy-fruit spurge, Hairy-fruited Spurge 
                                  Species Euphorbia cupricola (Malaisse & Lecron) Bruyns  
                                  Species Euphorbia cuprispina S. Carter  
                                  Species Euphorbia cupularis Boiss.  
                                  Species Euphorbia curtisii Engelm. – Curtis' spurge, sandhills spurge 
                                  Species Euphorbia curvirama R.A. Dyer  
                                  Species Euphorbia cuspidata Bertol.  
                                  Species Euphorbia cussonioides P.R.O. Bally  
                                  Species Euphorbia cyanofolia Ewest  
                                  Species Euphorbia cyathophora Murray – fire on the mountain, fire-on-the-mountain, painted leaf 
                                  Species Euphorbia cybirensis Boiss.  
                                  Species Euphorbia cylindrica Marloth ex A.C. White, R.A. Dyer & B. Sloane  
                                  Species Euphorbia cylindrifolia Marn.-Lap. & Rauh  
                                  Species Euphorbia cymbifera (Schltdl.) V.W. Steinm.  
                                  Species Euphorbia cymbiformis Rusby  
                                  Species Euphorbia cymosa Poir.  
                                  Species Euphorbia cyparissias L. – cypress spurge, graveyard spurge 
                                  Species Euphorbia cyparissioides Pax  
                                  Species Euphorbia cyri V.W. Steinm.  
                                  Species Euphorbia cyrtophylla (Prokh.) Prokh.  
                                  Species Euphorbia czerepanovii Geltman  
                                  Species Euphorbia daghestanica Geltman  
                                  Species Euphorbia dahurica Peschkova  
                                  Species Euphorbia dalettiensis M.G. Gilbert  
                                  Species Euphorbia dallachyana Baill.  
                                  Species Euphorbia damarana L.C. Leach  
                                  Species Euphorbia damasoi Oudejans  
                                  Species Euphorbia daphnoides Balf. f.  
                                  Species Euphorbia darbandensis N.E. Br.  
                                  Species Euphorbia dasyacantha S. Carter  
                                  Species Euphorbia dauana S. Carter  
                                  Species Euphorbia davidii Subils – David's spurge, Toothed Spurge 
                                  Species Euphorbia daviesii E.A. Bruce  
                                  Species Euphorbia davisii M.S. Khan  
                                  Species Euphorbia davyi N.E. Br.  
                                  Species Euphorbia dawei N.E. Br.  
                                  Species Euphorbia debilispina L.C. Leach  
                                  Species Euphorbia decaryi Guillaumin  
                                  Species Euphorbia deccanensis V.S. Raju  
                                  Species Euphorbia decepta N.E. Br.  
                                  Species Euphorbia decidua P.R.O. Bally & L.C. Leach  
                                  Species Euphorbia decliviticola L.C. Leach  
                                  Species Euphorbia decorsei Drake  
                                  Species Euphorbia dedzana L.C. Leach  
                                  Species Euphorbia deflexa Sibth. & Sm.  
                                  Species Euphorbia defoliata Urb.  
                                  Species Euphorbia degeneri Sherff – beach sandmat 
                                  Species Euphorbia deightonii Croizat  
                                  Species Euphorbia dekindtii Pax  
                                  Species Euphorbia delicatissima S. Carter  
                                  Species Euphorbia delicatula Boiss.  
                                  Species Euphorbia delphinensis Ursch & Leandri  
                                  Species Euphorbia deltobracteata (Prokh.) Prokh.  
                                  Species Euphorbia deltoidea Engelm. ex Chapm. – wedge sandmat 
                                  Species Euphorbia demissa L.C. Leach  
                                  Species Euphorbia dendroides L. – tree spurge 
                                  Species Euphorbia denisiana Guillaumin  
                                  Species Euphorbia denisii Oudejans  
                                  Species Euphorbia densa Schrenk  
                                  Species Euphorbia densiflora (Klotzsch & Garcke) Klotzsch  
                                  Species Euphorbia densifolia K. Koch  
                                  Species Euphorbia densispina S. Carter  
                                  Species Euphorbia densiuscula Popov  
                                  Species Euphorbia densiusculiformis (Pazij) Botsch.  
                                  Species Euphorbia dentata Michx. – toothed spurge, toothedleaf poinsettia, toothed euphorbia 
                                  Species Euphorbia denticulata Lam.  
                                  Species Euphorbia dentosa I.M. Johnst.  
                                  Species Euphorbia depauperata Hochst. ex A. Rich.  
                                  Species Euphorbia deppeana Boiss. – Oahu sandmat 
                                  Species Euphorbia derickii V.W. Steinm.  
                                  Species Euphorbia descampsii (Pax) Bruyns  
                                  Species Euphorbia desmondii Keay & Milne-Redh.  
                                  Species Euphorbia dhofarensis S. Carter  
                                  Species Euphorbia diazlunana (J. Lomelí & Sahagun) V.W. Steinm.  
                                  Species Euphorbia dichroa S. Carter  
                                  Species Euphorbia didiereoides Denis ex Leandri  
                                  Species Euphorbia digestiva Rojas  
                                  Species Euphorbia dilloniana Haager & Sedivá  
                                  Species Euphorbia dilobadena S. Carter  
                                  Species Euphorbia dilunguensis (Malaisse & Lecron) Bruyns  
                                  Species Euphorbia diminuta S. Carter  
                                  Species Euphorbia dimorphocaulon P.H. Davis  
                                  Species Euphorbia dioeca Kunth  
                                  Species Euphorbia dioscoreoides Boiss.  
                                  Species Euphorbia discoidalis Chapm. – summer spurge 
                                  Species Euphorbia discoidea (P.R.O. Bally) Bruyns  
                                  Species Euphorbia discolor Ledeb.  
                                  Species Euphorbia discrepans S. Carter  
                                  Species Euphorbia dispersa L.C. Leach  
                                  Species Euphorbia dissitispina L.C. Leach  
                                  Species Euphorbia distinctissima L.C. Leach  
                                  Species Euphorbia djimilensis Boiss.  
                                  Species Euphorbia dolichoceras S. Carter  
                                  Species Euphorbia doloensis M.G. Gilbert  
                                  Species Euphorbia donii Oudejans  
                                  Species Euphorbia dracunculoides Lam.  
                                  Species Euphorbia dregeana E. Mey. ex Boiss.  
                                  Species Euphorbia dressleri V.W. Steinm.  
                                  Species Euphorbia drummondii Boiss.  
                                  Species Euphorbia drupifera Thonn.  
                                  Species Euphorbia dubovikii Oudejans  
                                  Species Euphorbia duckei (Croizat) Oudejans  
                                  Species Euphorbia dugandiana Croizat  
                                  Species Euphorbia dulcis L.  
                                  Species Euphorbia dumalis S. Carter  
                                  Species Euphorbia dumeticola P.R.O. Bally & S. Carter  
                                  Species Euphorbia dunensis S. Carter  
                                  Species Euphorbia durandoi Chabert  
                                  Species Euphorbia duranii Ursch & Leandri  
                                  Species Euphorbia duriuscula Pax & K. Hoffm. ex Herzog  
                                  Species Euphorbia duseimata R.A. Dyer  
                                  Species Euphorbia dussii Krug & Urb. ex Duss  
                                  Species Euphorbia duvalii Lecoq & Lamotte  
                                  Species Euphorbia dwyeri D.G. Burch  
                                  Species Euphorbia eanophylla Croizat  
                                  Species Euphorbia ebracteolata Hayata  
                                  Species Euphorbia echinulata (Stapf) Bruyns  
                                  Species Euphorbia ecklonii (Klotzsch & Garcke) Baill.  
                                  Species Euphorbia ecorniculata Kitam.  
                                  Species Euphorbia edgeworthii Boiss.  
                                  Species Euphorbia edmondii Hochr.  
                                  Species Euphorbia eduardoi L.C. Leach  
                                  Species Euphorbia eggersii Urb.  
                                  Species Euphorbia eglandulosa V.W. Steinm.  
                                  Species Euphorbia eichleri Müll. Arg.  
                                  Species Euphorbia eilensis S. Carter  
                                  Species Euphorbia einensis G. Will.  
                                  Species Euphorbia elastica Jum.  
                                  Species Euphorbia eleanoriae (Lorence & W.L. Wagner) Govaerts – Na Pali sandmat 
                                  Species Euphorbia elegans Spreng.  
                                  Species Euphorbia elegantissima P.R.O. Bally & S. Carter  
                                  Species Euphorbia ellenbeckii Pax  
                                  Species Euphorbia elliotii Leandri  
                                  Species Euphorbia ellipsifolia Gilli  
                                  Species Euphorbia elliptica Lam.  
                                  Species Euphorbia elodes Boiss.  
                                  Species Euphorbia elquiensis Phil.  
                                  Species Euphorbia elymaitica Bornm.  
                                  Species Euphorbia emirnensis Baker  
                                  Species Euphorbia engelmannii Boiss.  
                                  Species Euphorbia engleri Pax  
                                  Species Euphorbia engleriana Dinter  
                                  Species Euphorbia enormis N.E. Br.  
                                  Species Euphorbia ensifolia Baker  
                                  Species Euphorbia enterophora Drake  
                                  Species Euphorbia ephedroides E. Mey. ex Boiss.  
                                  Species Euphorbia ephedromorpha Bartlett ex B.L. Rob. & Bartlett  
                                  Species Euphorbia epicyparissias (E. Mey. ex Klotzsch & Garcke) Boiss.  
                                  Species Euphorbia epiphylloides Kurz  
                                  Species Euphorbia epithymoides L. – cushion spurge 
                                  Species Euphorbia equisetiformis A. Stewart  
                                  Species Euphorbia eranthes R.A. Dyer & Milne-Redh.  
                                  Species Euphorbia eriantha Benth. – beetle spurge, Mexican poinsettia 
                                  Species Euphorbia ericoides Lam.  
                                  Species Euphorbia erigavensis S. Carter  
                                  Species Euphorbia erinacea Boiss. & Kotschy  
                                  Species Euphorbia eriophora Boiss.  
                                  Species Euphorbia erlangeri Pax  
                                  Species Euphorbia erubescens Boiss.  
                                  Species Euphorbia erythradenia Boiss.  
                                  Species Euphorbia erythrina Link  
                                  Species Euphorbia erythrocephala P.R.O. Bally & Milne-Redh.  
                                  Species Euphorbia erythroclada Boiss. – Dhudheri 
                                  Species Euphorbia erythrocucullata Mangelsdorff  
                                  Species Euphorbia erythrodon Boiss. & Heldr.  
                                  Species Euphorbia erythroxyloides Baker  
                                  Species Euphorbia esculenta Marloth  
                                  Species Euphorbia espinosa Pax  
                                  Species Euphorbia estevesii N. Zimm. & P.J. Braun  
                                  Species Euphorbia esula L. – spurge, wolf's milk, wolf's-milk, leafy spurge 
                                  Species Euphorbia esuliformis S. Schauer ex Nees & S. Schauer  
                                  Species Euphorbia etuberculosa P.R.O. Bally & S. Carter  
                                  Species Euphorbia eugeniae Prokh.  
                                  Species Euphorbia euonymoclada Croizat  
                                  Species Euphorbia evansii Pax  
                                  Species Euphorbia excelsa A.C. White, R.A. Dyer & B. Sloane  
                                  Species Euphorbia exigua L. – dwarf spurge, ésula meno, hierbecilla traidora, small spurge 
                                  Species Euphorbia exilis L.C. Leach  
                                  Species Euphorbia exilispina S. Carter  
                                  Species Euphorbia exserta (Small) Coker – coastal sand spurge 
                                  Species Euphorbia exstipulata Engelm. – squareseed spurge, square-seed spurge, Clark Mountain spurge 
                                  Species Euphorbia eyassiana P.R.O. Bally & S. Carter  
                                  Species Euphorbia eylesii Rendle  
                                  Species Euphorbia falcata L. – sickle spurge 
                                  Species Euphorbia famatamboay F. Friedmann & Cremers  
                                  Species Euphorbia fanshawei L.C. Leach  
                                  Species Euphorbia fascicaulis S. Carter  
                                  Species Euphorbia fasciculata Thunb.  
                                  Species Euphorbia faucicola L.C. Leach  
                                  Species Euphorbia fauriei H. Lév. & Vaniot  
                                  Species Euphorbia feddemae McVaugh  
                                  Species Euphorbia fendleri Torr. & A. Gray – Fendler's sandmat 
                                  Species Euphorbia ferdowsiana Pahlevani  
                                  Species Euphorbia ferganensis B. Fedtsch.  
                                  Species Euphorbia X fernandez-lopezii Molero & Rovira  
                                  Species Euphorbia ferox Marloth  
                                  Species Euphorbia fianarantsoae Ursch & Leandri  
                                  Species Euphorbia fiherenensis Poiss.  
                                  Species Euphorbia filicina Port.  
                                  Species Euphorbia filiflora Marloth  
                                  Species Euphorbia filiformis (P.R.O. Bally) Bruyns  
                                  Species Euphorbia finkii (Boiss.) V.W. Steinm.  
                                  Species Euphorbia fischeri Pax  
                                  Species Euphorbia fischeriana Steud.  
                                  Species Euphorbia fissispina P.R.O. Bally & S. Carter  
                                  Species Euphorbia fistulosa M.S. Khan  
                                  Species Euphorbia flanaganii N.E. Br.  
                                  Species Euphorbia flaviana Carn.-Torres & Cordeiro  
                                  Species Euphorbia flavicoma DC.  
                                  Species Euphorbia flindersica Halford & W.K. Harris  
                                  Species Euphorbia floribunda Engelm. ex Boiss.  
                                  Species Euphorbia florida Engelm. – Chiricahua Mountain sandmat 
                                  Species Euphorbia floridana Chapm. – Greater Florida spurge 
                                  Species Euphorbia fluminis S. Carter  
                                  Species Euphorbia foliolosa Boiss.  
                                  Species Euphorbia foliosa (Klotzsch & Garcke) N.E. Br.  
                                  Species Euphorbia fontqueriana Greuter  
                                  Species Euphorbia forolensis L.E. Newton  
                                  Species Euphorbia forsskalii J. Gay  
                                  Species Euphorbia fortissima L.C. Leach  
                                  Species Euphorbia fortuita A.C. White, R.A. Dyer & B. Sloane  
                                  Species Euphorbia fosbergii (J. Florence) Govaerts  
                                  Species Euphorbia fractiflexa S. Carter & J.R.I. Wood  
                                  Species Euphorbia fragifera Jan  
                                  Species Euphorbia franchetii B. Fedtsch.  
                                  Species Euphorbia franckiana A. Berger  
                                  Species Euphorbia francoana Boiss.  
                                  Species Euphorbia francoisii Leandri  
                                  Species Euphorbia frankii Lavranos  
                                  Species Euphorbia fraseri Boiss.  
                                  Species Euphorbia friedrichiae Dinter  
                                  Species Euphorbia friesii (N.E. Br.) Bruyns  
                                  Species Euphorbia friesiorum (Hassl.) S. Carter  
                                  Species Euphorbia fruticosa Forssk. – Shurur 
                                  Species Euphorbia fruticulosa Engelm. ex Boiss.  
                                  Species Euphorbia fuentesii V.W. Steinm.  
                                  Species Euphorbia fulgens Karw. ex Klotzsch – scarlet-plume 
                                  Species Euphorbia furcata N.E. Br.  
                                  Species Euphorbia furcatifolia M.G. Gilbert  
                                  Species Euphorbia furcillata Kunth  
                                  Species Euphorbia fuscolanata Gilli  
                                  Species Euphorbia fusiformis Buch.-Ham. ex D. Don  
                                  Species Euphorbia fwambensis (N.E. Br.) Bruyns  
                                  Species Euphorbia gaditana Coss.  
                                  Species Euphorbia gaillardotii Boiss. & Blanche  
                                  Species Euphorbia galapageia B.L. Rob. & Greenm.  
                                  Species Euphorbia galgalana S. Carter  
                                  Species Euphorbia gammaranoi G. Will.  
                                  Species Euphorbia garanbiensis Hayata  
                                  Species Euphorbia garberi Engelm. ex Chapm. – Garber's spurge, Garber's sandmat 
                                  Species Euphorbia gariepina Boiss.  
                                  Species Euphorbia garuana N.E. Br.  
                                  Species Euphorbia gasparrinii Boiss.  
                                  Species Euphorbia gaudichaudii Boiss. – spurge 
                                  Species Euphorbia X gayeri Borós & Soó  
                                  Species Euphorbia gayi Salis  
                                  Species Euphorbia gebelica Brullo  
                                  Species Euphorbia gedrosiaca Rech. f., Aellen & Esfand.  
                                  Species Euphorbia geldorensis S. Carter  
                                  Species Euphorbia gemmea P.R.O. Bally & S. Carter  
                                  Species Euphorbia genistoides P.J. Bergius  
                                  Species Euphorbia genoudiana Ursch & Leandri  
                                  Species Euphorbia gentilis N.E. Br.  
                                  Species Euphorbia gentryi V.W. Steinm. & T.F. Daniel  
                                  Species Euphorbia georgiana Mayfield  
                                  Species Euphorbia germainii Phil.  
                                  Species Euphorbia geroldii Rauh  
                                  Species Euphorbia gerstneriana Bruyns  
                                  Species Euphorbia geyeri Engelm. – Geyer's sandmat, Geyer's spurge 
                                  Species Euphorbia giessii L.C. Leach  
                                  Species Euphorbia gilbertiana Bisseret & Specks  
                                  Species Euphorbia gillettii P.R.O. Bally & S. Carter  
                                  Species Euphorbia giumboensis A. Hässl.  
                                  Species Euphorbia glaberrima K. Koch  
                                  Species Euphorbia glabriflora Vis.  
                                  Species Euphorbia gladiata (P.R.O. Bally) Bruyns  
                                  Species Euphorbia glanduligera Pax  
                                  Species Euphorbia glareosa Pall. ex M. Bieb.  
                                  Species Euphorbia glauca G. Forst.  
                                  Species Euphorbia glaucophylla Poir.  
                                  Species Euphorbia globosa (Haw.) Sims  
                                  Species Euphorbia globulicaulis S. Carter  
                                  Species Euphorbia glochidiata Pax  
                                  Species Euphorbia glomerulans (Prokh.) Prokh.  
                                  Species Euphorbia glyptosperma Engelm. – ridgeseed spurge, ribseed sandmat 
                                  Species Euphorbia gmelinii Steud.  
                                  Species Euphorbia godana Buddens., Lawant & Lavranos  
                                  Species Euphorbia goetzei Pax  
                                  Species Euphorbia gokakensis S.R. Yadav, Malpure & Chandore  
                                  Species Euphorbia goliana Comm. ex Lam.  
                                  Species Euphorbia gollmeriana Klotzsch ex Boiss.  
                                  Species Euphorbia golondrina L.C. Wheeler – Boquillas sandmat, canyon spurge, swallow spurge 
                                  Species Euphorbia gossypina Pax  
                                  Species Euphorbia gottlebei Rauh  
                                  Species Euphorbia goyazensis Boiss.  
                                  Species Euphorbia gracilicaulis L.C. Leach  
                                  Species Euphorbia graciliramea Pax  
                                  Species Euphorbia gracillima S. Watson – Mexican sandmat 
                                  Species Euphorbia gradyi V.W. Steinm. & Ram.-Roa  
                                  Species Euphorbia graminea Jacq. – grassleaf spurge 
                                  Species Euphorbia graminifolia Vill.  
                                  Species Euphorbia grammata (McVaugh) Oudejans  
                                  Species Euphorbia grandialata R.A. Dyer  
                                  Species Euphorbia grandicornis Goebel ex N.E. Br.  
                                  Species Euphorbia grandidens Haw.  
                                  Species Euphorbia grandidieri Baill.  
                                  Species Euphorbia grandifolia Haw.  
                                  Species Euphorbia graniticola L.C. Leach  
                                  Species Euphorbia grantii Oliv.  
                                  Species Euphorbia granulata Forssk.  
                                  Species Euphorbia greenwayi P.R.O. Bally & S. Carter  
                                  Species Euphorbia gregaria Marloth  
                                  Species Euphorbia gregersenii K. Malý ex Beck  
                                  Species Euphorbia greggii Engelm. ex Boiss.  
                                  Species Euphorbia greuteri N. Kilian, Kürschner & P. Hein  
                                  Species Euphorbia griffithii Hook. f.  
                                  Species Euphorbia griseola Pax  
                                  Species Euphorbia grisophylla M.S. Khan  
                                  Species Euphorbia groenewaldii R.A. Dyer  
                                  Species Euphorbia grosseri Pax  
                                  Species Euphorbia grossheimii (Prokh.) Prokh.  
                                  Species Euphorbia guachanca Haenke  
                                  Species Euphorbia guadalajarana S. Watson  
                                  Species Euphorbia guanarensis Pittier  
                                  Species Euphorbia guaraniorum P. Carrillo & V.W. Steinm.  
                                  Species Euphorbia guatemalensis Standl. & Steyerm.  
                                  Species Euphorbia gueinzii Boiss.  
                                  Species Euphorbia guentheri (Pax) Bruyns  
                                  Species Euphorbia guerichiana Pax  
                                  Species Euphorbia guiengola W.R. Buck & Huft  
                                  Species Euphorbia guillauminiana Boiteau  
                                  Species Euphorbia gulestanica Podlech  
                                  Species Euphorbia gumaroi J. Meyrán  
                                  Species Euphorbia gummifera Boiss.  
                                  Species Euphorbia guntensis (Prokh.) Prokh.  
                                  Species Euphorbia guyoniana Boiss. & Reut.  
                                  Species Euphorbia gymnocalycioides M.G. Gilbert & S. Carter  
                                  Species Euphorbia gymnoclada Boiss.  
                                  Species Euphorbia gymnonota Urb.  
                                  Species Euphorbia gypsicola Rech. f. & Aellen  
                                  Species Euphorbia gypsophila S. Carter  
                                  Species Euphorbia hadramautica Baker  
                                  Species Euphorbia haeleeleana D.R. Herbst – Kauai spurge, `akoko 
                                  Species Euphorbia haematantha Boiss.  
                                  Species Euphorbia haevermansii X. Aubriot & Lowry  
                                  Species Euphorbia hainanensis Croizat  
                                  Species Euphorbia hajhirensis Radcl.-Sm.  
                                  Species Euphorbia hakutosanensis Hurus.  
                                  Species Euphorbia halemanui Sherff – Kauai sandmat 
                                  Species Euphorbia halipedicola L.C. Leach  
                                  Species Euphorbia hallii R.A. Dyer  
                                  Species Euphorbia hamaderoensis A.G. Mill. – Gisso, Jissoh 
                                  Species Euphorbia hamata (Haw.) Sweet  
                                  Species Euphorbia handeniensis S. Carter  
                                  Species Euphorbia handiensis Burchard  
                                  Species Euphorbia haussknechtii Boiss.  
                                  Species Euphorbia hebecarpa Boiss.  
                                  Species Euphorbia hedigeriana (Malaisse) Bruyns  
                                  Species Euphorbia hedyotoides N.E. Br.  
                                  Species Euphorbia heishuiensis W.T. Wang  
                                  Species Euphorbia heldreichii Orph. ex Boiss.  
                                  Species Euphorbia helenae Urb.  
                                  Species Euphorbia heleniana Thell. & Stapf  
                                  Species Euphorbia helioscopia L. – madwoman's milk, summer spurge, sun spurge, wartweed 
                                  Species Euphorbia helleri Millsp. – Heller's spurge 
                                  Species Euphorbia helwigii Urb. & Ekman  
                                  Species Euphorbia henricksonii M.C. Johnst.  
                                  Species Euphorbia hepatica Urb. & Ekman  
                                  Species Euphorbia heptagona L.  
                                  Species Euphorbia heptapotamica Golosk.  
                                  Species Euphorbia herbacea (Pax) Bruyns  
                                  Species Euphorbia herbstii (W.L. Wagner) Oudejans – Herbst's sandmat 
                                  Species Euphorbia hercegovina Beck  
                                  Species Euphorbia hermanschwartzii Rauh  
                                  Species Euphorbia herniariifolia Willd. – herniaria-leaf spurge 
                                  Species Euphorbia herrei A.C. White, R.A. Dyer & B. Sloane  
                                  Species Euphorbia herteri Arechav.  
                                  Species Euphorbia heteradena Jaub. & Spach  
                                  Species Euphorbia heterochroma Pax  
                                  Species Euphorbia heterodoxa Müll. Arg.  
                                  Species Euphorbia heterophylla L. – Mexican fireplant, painted euphorbia 
                                  Species Euphorbia heteropoda Pax  
                                  Species Euphorbia heterospina S. Carter  
                                  Species Euphorbia hexadenia Denis  
                                  Species Euphorbia hexagona Nutt. ex Spreng. – sixangle spurge, six-angle spurge 
                                  Species Euphorbia hexagonoides S. Watson  
                                  Species Euphorbia heyligersiana P.I. Forst.  
                                  Species Euphorbia heyneana Spreng.  
                                  Species Euphorbia hiernii (Croizat) Oudejans  
                                  Species Euphorbia hieroglyphica Coss. & Durieu ex Boiss.  
                                  Species Euphorbia hieronymi Subils  
                                  Species Euphorbia hierosolymitana Boiss.  
                                  Species Euphorbia himalayensis (Klotzsch) Boiss.  
                                  Species Euphorbia hindsiana Benth.  
                                  Species Euphorbia hinkleyorum I.M. Johnst.  
                                  Species Euphorbia hintonii L.C. Wheeler  
                                  Species Euphorbia hirsuta L.  
                                  Species Euphorbia hirta L. – pillpod sandmat, pillpod spurge, asthma spurge 
                                  Species Euphorbia hirtella Boiss.  
                                  Species Euphorbia hispida Boiss.  
                                  Species Euphorbia hockii De Wild.  
                                  Species Euphorbia hoffmanniana (Klotzsch & Garcke) Boiss.  
                                  Species Euphorbia hofstaetteri Rauh  
                                  Species Euphorbia holmesiae Lavranos  
                                  Species Euphorbia holochlorina Rizzini  
                                  Species Euphorbia hooveri L.C. Wheeler – Hoover's sandmat 
                                  Species Euphorbia hormorrhiza Radcl.-Sm.  
                                  Species Euphorbia horombensis Ursch & Leandri  
                                  Species Euphorbia horwoodii S. Carter & Lavranos  
                                  Species Euphorbia hottentota Marloth  
                                  Species Euphorbia hsinchuensis (S.C. Lin & S.M. Chaw) C.Y. Wu & J.S. Ma  
                                  Species Euphorbia huanchahana (Klotzsch & Garcke) Boiss.  
                                  Species Euphorbia hubertii Pax  
                                  Species Euphorbia humayensis Brandegee  
                                  Species Euphorbia humbertii Denis  
                                  Species Euphorbia humifusa Willd.  
                                  Species Euphorbia humilis Ledeb.  
                                  Species Euphorbia humistrata Engelm. ex A. Gray – spreading sandmat 
                                  Species Euphorbia hunzikeri Subils  
                                  Species Euphorbia huttonae N.E. Br.  
                                  Species Euphorbia hyberna L.  
                                  Species Euphorbia hylonoma Hand.-Mazz.  
                                  Species Euphorbia hypericifolia L. – graceful sandmat 
                                  Species Euphorbia hypogaea Marloth  
                                  Species Euphorbia hyrcana Grossh.  
                                  Species Euphorbia hyssopifolia L. – hyssopleaf sandmat 
                                  Species Euphorbia iancannellii Bruyns  
                                  Species Euphorbia iberica Boiss.  
                                  Species Euphorbia iharanae Rauh  
                                  Species Euphorbia illirica Lam.  
                                  Species Euphorbia iloitaii Powys & S. Carter  
                                  Species Euphorbia imerina Cremers  
                                  Species Euphorbia imitata N.E. Br.  
                                  Species Euphorbia immersa P.R.O. Bally & S. Carter – Denegu 
                                  Species Euphorbia imparispina S. Carter  
                                  Species Euphorbia imperfoliata Vis.  
                                  Species Euphorbia impressa Chiov.  
                                  Species Euphorbia inaequilatera Sond.  
                                  Species Euphorbia inaequispina N.E. Br.  
                                  Species Euphorbia inaguaensis Oudejans  
                                  Species Euphorbia inappendiculata Domin  
                                  Species Euphorbia inarticulata Schweinf.  
                                  Species Euphorbia incerta Brandegee  
                                  Species Euphorbia inculta P.R.O. Bally  
                                  Species Euphorbia indecora N.E. Br.  
                                  Species Euphorbia inderiensis Less. ex Kar. & Kir.  
                                  Species Euphorbia indica Lam.  
                                  Species Euphorbia indistincta P.I. Forst.  
                                  Species Euphorbia indivisa (Engelm.) Tidestr. – royal sandmat 
                                  Species Euphorbia indurescens L.C. Leach  
                                  Species Euphorbia inermis Mill.  
                                  Species Euphorbia infernidialis V.W. Steinm.  
                                  Species Euphorbia inflexa Urb. & Ekman  
                                  Species Euphorbia ingens E. Mey. ex Boiss.  
                                  Species Euphorbia ingenticapsa L.C. Leach  
                                  Species Euphorbia X ingezalahiana Ursch & Leandri  
                                  Species Euphorbia innocua L.C. Wheeler – velvet spurge 
                                  Species Euphorbia insarmentosa P.G. Mey.  
                                  Species Euphorbia insulana Vell.  
                                  Species Euphorbia intisy Drake  
                                  Species Euphorbia intricata S. Carter  
                                  Species Euphorbia inundata Torr. ex Chapm. – Florida pineland spurge 
                                  Species Euphorbia inundaticola L.C. Leach  
                                  Species Euphorbia invaginata Croizat  
                                  Species Euphorbia invenusta (N.E. Br.) Bruyns  
                                  Species Euphorbia ipecacuanhae L. – American ipecac, Carolina ipecac 
                                  Species Euphorbia iranshahri Pahlevani  
                                  Species Euphorbia irgisensis Litv.  
                                  Species Euphorbia isacantha Pax  
                                  Species Euphorbia isalensis Leandri  
                                  Species Euphorbia isatidifolia Lam.  
                                  Species Euphorbia isaurica M.S. Khan  
                                  Species Euphorbia itremensis Kimnach & Lavranos  
                                  Species Euphorbia ivanjohnstonii M.C. Johnst.  
                                  Species Euphorbia ixtlana Huft  
                                  Species Euphorbia X jablonskiana Polatschek  
                                  Species Euphorbia jablonskii V.W. Steinm.  
                                  Species Euphorbia jacquemontii Boiss.  
                                  Species Euphorbia jacquinii Fenzl ex Boiss.  
                                  Species Euphorbia jaegeri V.W. Steinm. & J. André  
                                  Species Euphorbia jaliscensis B.L. Rob. & Greenm.  
                                  Species Euphorbia jamesonii Boiss.  
                                  Species Euphorbia jansenvillensis Nel  
                                  Species Euphorbia jatrophoides Pax  
                                  Species Euphorbia jaxartica (Prokh.) Krylov  
                                  Species Euphorbia jejuna M.C. Johnst. & Warnock – dwarf sandmat, dwarf broomspurge 
                                  Species Euphorbia jenisseiensis Baikov  
                                  Species Euphorbia jodhpurensis Blatt. & Hallb.  
                                  Species Euphorbia johannis S. Carter  
                                  Species Euphorbia johnstonii Mayfield  
                                  Species Euphorbia jolkinii Boiss.  
                                  Species Euphorbia joyae P.R.O. Bally & S. Carter  
                                  Species Euphorbia X jubaeaphylla Svent.  
                                  Species Euphorbia jubata L.C. Leach  
                                  Species Euphorbia juttae Dinter  
                                  Species Euphorbia kabridarensis Thulin  
                                  Species Euphorbia kadapensis Sarojin. & R.R.V. Raju  
                                  Species Euphorbia kaessneri Pax  
                                  Species Euphorbia kalisana S. Carter  
                                  Species Euphorbia kamerunica Pax  
                                  Species Euphorbia kamponii Rauh & Petignat  
                                  Species Euphorbia kanalensis Boiss.  
                                  Species Euphorbia kanaorica Boiss.  
                                  Species Euphorbia kansuensis Prokh.  
                                  Species Euphorbia kansui S.L. Liou ex S.B. Ho  
                                  Species Euphorbia kaokoensis (A.C. White, R.A. Dyer & B. Sloane) L.C. Leach  
                                  Species Euphorbia karibensis S. Carter  
                                  Species Euphorbia karroensis (Boiss.) N.E. Br.  
                                  Species Euphorbia katrajensis Gage  
                                  Species Euphorbia keithii R.A. Dyer  
                                  Species Euphorbia kelleri Pax  
                                  Species Euphorbia kerneri Huter ex A. Kern.  
                                  Species Euphorbia kerstingii Pax  
                                  Species Euphorbia khasyana Boiss.  
                                  Species Euphorbia khorasanica Saeidi & Ghayorm.  
                                  Species Euphorbia kilwana N.E. Br.  
                                  Species Euphorbia kimberleyana (G. Will.) Bruyns  
                                  Species Euphorbia kimberleyensis B.G. Thomson  
                                  Species Euphorbia kimmerica Lipsky ex Grossh.  
                                  Species Euphorbia kingdon-wardii Binojk. & N.P. Balakr.  
                                  Species Euphorbia kirimzjulica Stepanov  
                                  Species Euphorbia kiritensis P.R.O. Bally & S. Carter  
                                  Species Euphorbia kirkii (N.E. Br.) Bruyns  
                                  Species Euphorbia kischenensis Vierh.  
                                  Species Euphorbia klotzschii Oudejans  
                                  Species Euphorbia knobelii Letty  
                                  Species Euphorbia knuthii Pax  
                                  Species Euphorbia komaroviana Prokh.  
                                  Species Euphorbia kondoi Rauh & Razaf.  
                                  Species Euphorbia kopetdaghi (Prokh.) Prokh.  
                                  Species Euphorbia korshinskyi Geltman  
                                  Species Euphorbia kotschyana Fenzl  
                                  Species Euphorbia kouandenensis Beille ex A. Chev.  
                                  Species Euphorbia kozlovii Prokh.  
                                  Species Euphorbia kraussiana Bernh. ex Krauss  
                                  Species Euphorbia kudrjaschevii (Pazij) Prokh.  
                                  Species Euphorbia kundelunguensis (Malaisse) Bruyns  
                                  Species Euphorbia kuriensis Vierh.  
                                  Species Euphorbia kurtzii Subils  
                                  Species Euphorbia kuwaleana O. Deg. & Sherff – kokomalei 
                                  Species Euphorbia labatii Rauh & Bard.-Vauc.  
                                  Species Euphorbia lacei Craib  
                                  Species Euphorbia lacera Boiss.  
                                  Species Euphorbia laciniata Panigrahi  
                                  Species Euphorbia lactea Haw. – mottled spurge 
                                  Species Euphorbia lactiflua Phil.  
                                  Species Euphorbia laevigata Lam.  
                                  Species Euphorbia lagascae Spreng.  
                                  Species Euphorbia lagunensis Huft  
                                  Species Euphorbia lagunillarum Croizat  
                                  Species Euphorbia laikipiensis S. Carter  
                                  Species Euphorbia lamarckii Sweet  
                                  Species Euphorbia lamprocarpa (Prokh.) Prokh.  
                                  Species Euphorbia lancifolia Schltdl. – ixbut 
                                  Species Euphorbia laredana Millsp. – Laredo sandmat 
                                  Species Euphorbia larica Boiss.  
                                  Species Euphorbia larranagae Oudejans  
                                  Species Euphorbia lasiocarpa Klotzsch – roadside sandmat 
                                  Species Euphorbia lata Engelm. – hoary sandmat, broadleaf spurge 
                                  Species Euphorbia lateriflora Schumach.  
                                  Species Euphorbia lathyris L. – moleplant, cańamón purgante, gopher plant, caper spurge 
                                  Species Euphorbia latifolia C.A. Mey. ex Ledeb.  
                                  Species Euphorbia laurifolia Juss. ex Lam. – Nonocta, nońocta, Lechero 
                                  Species Euphorbia lavicola S. Carter  
                                  Species Euphorbia lavranii L.C. Leach  
                                  Species Euphorbia lawsonii Binojk. & Dwarakan  
                                  Species Euphorbia leachii Lawant & van Veldh.  
                                  Species Euphorbia lecheoides Millsp.  
                                  Species Euphorbia ledermanniana Pax & K. Hoffm.  
                                  Species Euphorbia ledienii A. Berger  
                                  Species Euphorbia leistneri R.H. Archer  
                                  Species Euphorbia lemesiana Hadjik., Hand, Christodoulou & Frajman  
                                  Species Euphorbia lenensis Baikov  
                                  Species Euphorbia lenewtonii S. Carter  
                                  Species Euphorbia leonardii (D.G. Burch) Radcl.-Sm.  
                                  Species Euphorbia leontopoda S. Carter  
                                  Species Euphorbia leptocaula Boiss.  
                                  Species Euphorbia leptoclada Balf. f.  
                                  Species Euphorbia letestuana (Denis) Bruyns  
                                  Species Euphorbia letestui J. Raynal  
                                  Species Euphorbia letouzeyana (Malaisse) Bruyns  
                                  Species Euphorbia leucantha (Klotzsch & Garcke) Boiss.  
                                  Species Euphorbia leucocephala Lotsy – pascuita 
                                  Species Euphorbia leucochlamys Chiov.  
                                  Species Euphorbia leuconeura Boiss.  
                                  Species Euphorbia leucophylla Benth.  
                                  Species Euphorbia lignosa Marloth  
                                  Species Euphorbia limpopoana L.C. Leach ex S. Carter  
                                  Species Euphorbia lindenii (S. Carter) Bruyns  
                                  Species Euphorbia linearibracteata L.C. Leach  
                                  Species Euphorbia linearis Retz.  
                                  Species Euphorbia lineata S. Watson  
                                  Species Euphorbia linguiformis McVaugh  
                                  Species Euphorbia lioui C.Y. Wu & J.S. Ma  
                                  Species Euphorbia lipskyi (Prokh.) Prokh.  
                                  Species Euphorbia lissosperma S. Carter  
                                  Species Euphorbia liukiuensis Hayata  
                                  Species Euphorbia livida E. Mey. ex Boiss.  
                                  Species Euphorbia lividiflora L.C. Leach  
                                  Species Euphorbia loandensis N.E. Br.  
                                  Species Euphorbia lomelii V.W. Steinm.  
                                  Species Euphorbia X lomi Rauh  
                                  Species Euphorbia longicornuta S. Watson  
                                  Species Euphorbia longicruris Scheele – wedgeleaf spurge, wedge-leaf spurge 
                                  Species Euphorbia longinsulicola S.R. Hill  
                                  Species Euphorbia longispina Chiov.  
                                  Species Euphorbia longistyla Boiss.  
                                  Species Euphorbia longituberculosa Hochst. ex Boiss.  
                                  Species Euphorbia lophiosperma S. Carter  
                                  Species Euphorbia lophogona Lam.  
                                  Species Euphorbia loricata Lam.  
                                  Species Euphorbia lottiae V.W. Steinm.  
                                  Species Euphorbia louwii L.C. Leach  
                                  Species Euphorbia luapulana L.C. Leach  
                                  Species Euphorbia lucida Waldst. & Kit. – shining spurge 
                                  Species Euphorbia luciismithii B.L. Rob. & Greenm.  
                                  Species Euphorbia lucorum Rupr.  
                                  Species Euphorbia lugardiae (N.E. Br.) Bruyns  
                                  Species Euphorbia lukoseana S. Carter  
                                  Species Euphorbia lumbricalis L.C. Leach  
                                  Species Euphorbia lundelliana Croizat  
                                  Species Euphorbia lunulata Bunge  
                                  Species Euphorbia lupatensis N.E. Br.  
                                  Species Euphorbia lurida Engelm. – San Francisco Mountain spurge, woodland spurge 
                                  Species Euphorbia luteoviridis D.G. Long  
                                  Species Euphorbia lutosa S. Carter  
                                  Species Euphorbia lutulenta (Croizat) Oudejans  
                                  Species Euphorbia luzoniensis Merr.  
                                  Species Euphorbia lycioides Boiss.  
                                  Species Euphorbia lydenburgensis Schweick. & Letty  
                                  Species Euphorbia macgillivrayi Boiss.  
                                  Species Euphorbia machrisiae Steyerm.  
                                  Species Euphorbia X macinensis Prodán  
                                  Species Euphorbia maconochieana B.G. Thomson  
                                  Species Euphorbia macra Hiern  
                                  Species Euphorbia macraulonia Phil.  
                                  Species Euphorbia macrocarpa Boiss. & Buhse  
                                  Species Euphorbia macroceras Fisch. & C.A. Mey.  
                                  Species Euphorbia macroclada Boiss.  
                                  Species Euphorbia macrophylla Pax  
                                  Species Euphorbia macropodoides B.L. Rob. & Greenm.  
                                  Species Euphorbia macropus (Klotzsch & Garcke) Boiss. – Huachuca Mountain spurge 
                                  Species Euphorbia macrorhiza Ledeb.  
                                  Species Euphorbia maculata L. – milk purslane, prostrate spurge, spotted spurge, spotted sandmat 
                                  Species Euphorbia macvaughii Carvajal & Lomelí  
                                  Species Euphorbia maddenii Boiss.  
                                  Species Euphorbia madinahensis Fayed & D. Al-Zahrani – Karath, Karathah 
                                  Species Euphorbia mafingensis (Hargreaves) Bruyns  
                                  Species Euphorbia magdalenae Benth.  
                                  Species Euphorbia magnicapsula S. Carter  
                                  Species Euphorbia magnifica (E.A. Bruce) Bruyns  
                                  Species Euphorbia mahabobokensis Rauh  
                                  Species Euphorbia mahafalensis Denis  
                                  Species Euphorbia mainiana Poiss.  
                                  Species Euphorbia mainty Denis ex Leandri  
                                  Species Euphorbia major (Pax) Bruyns  
                                  Species Euphorbia makallensis S. Carter  
                                  Species Euphorbia makinoi Hayata  
                                  Species Euphorbia maleolens E. Phillips  
                                  Species Euphorbia malevola L.C. Leach  
                                  Species Euphorbia malleata Boiss.  
                                  Species Euphorbia malurensis Rech. f.  
                                  Species Euphorbia malvana Maire  
                                  Species Euphorbia mamfwensis (Malaisse & Lecron) Bruyns  
                                  Species Euphorbia mammillaris L.  
                                  Species Euphorbia mananarensis Leandri  
                                  Species Euphorbia mandoniana Boiss.  
                                  Species Euphorbia mandravioky Leandri  
                                  Species Euphorbia mandshurica Maxim.  
                                  Species Euphorbia mangelsdorffii Rauh  
                                  Species Euphorbia mangokyensis Denis  
                                  Species Euphorbia mangorensis Leandri  
                                  Species Euphorbia maoershanensis F.N. Wei & J.S. Ma  
                                  Species Euphorbia marayensis Subils  
                                  Species Euphorbia maresii Knoche  
                                  Species Euphorbia margalidiana Kuhbier & Lewej.  
                                  Species Euphorbia margaretae S. Carter  
                                  Species Euphorbia marginata Pursh – snow on the mountain, snow-on-the-mountain, smoke-on-the-prairie, variegated spurge, whitemargined spurge 
                                  Species Euphorbia marie-cladieae Rzepecky  
                                  Species Euphorbia maritae Rauh  
                                  Species Euphorbia X marreroi Molero & Rovira  
                                  Species Euphorbia marrupana Bruyns  
                                  Species Euphorbia marsabitensis S. Carter  
                                  Species Euphorbia marschalliana Boiss.  
                                  Species Euphorbia martinae Rauh  
                                  Species Euphorbia X martinii Rouy  
                                  Species Euphorbia maryrichardsiae G. Will.  
                                  Species Euphorbia masirahensis Ghaz.  
                                  Species Euphorbia matabelensis Pax  
                                  Species Euphorbia matritensis Boiss.  
                                  Species Euphorbia mauritanica L.  
                                  Species Euphorbia mayfieldii V.W. Steinm.  
                                  Species Euphorbia mayuranathanii Croizat  
                                  Species Euphorbia mazandaranica Pahlevani  
                                  Species Euphorbia mazicum Emb. & Maire  
                                  Species Euphorbia mcvaughiana M.C. Johnst.  
                                  Species Euphorbia medicaginea Boiss.  
                                  Species Euphorbia meenae S. Carter  
                                  Species Euphorbia megalatlantica Ball  
                                  Species Euphorbia megalocarpa Rech. f.  
                                  Species Euphorbia meganaesos Featherman  
                                  Species Euphorbia megapolitana Henker & Kiesew.  
                                  Species Euphorbia melanadenia Torr. & A. Gray – prostrate spurge, red-gland spurge, squaw sandmat 
                                  Species Euphorbia melanohydrata Nel  
                                  Species Euphorbia melapetala Gasp. ex Guss.  
                                  Species Euphorbia melicae Ewest  
                                  Species Euphorbia melitensis Parl.  
                                  Species Euphorbia mellifera Aiton  
                                  Species Euphorbia meloformis Aiton  
                                  Species Euphorbia memoralis R.A. Dyer  
                                  Species Euphorbia mendezii Boiss. – Mendez's sandmat 
                                  Species Euphorbia mercurialina Michx. – mercury spurge 
                                  Species Euphorbia meridionalis P.R.O. Bally & S. Carter  
                                  Species Euphorbia mertonii Fosberg  
                                  Species Euphorbia mesembryanthemifolia Jacq. – Coastal beach sandmat 
                                  Species Euphorbia meuleniana O. Schwartz  
                                  Species Euphorbia mexiae Standl.  
                                  Species Euphorbia meyeniana Klotzsch  
                                  Species Euphorbia michaelii Thulin  
                                  Species Euphorbia micracantha Boiss.  
                                  Species Euphorbia micractina Boiss.  
                                  Species Euphorbia microcarpa (Prokh.) Krylov  
                                  Species Euphorbia micromera Boiss. ex Engelm. – Sonoran sandmat, tiny sandmat, desert spurge 
                                  Species Euphorbia microsciadia Boiss.  
                                  Species Euphorbia microsphaera Boiss.  
                                  Species Euphorbia migiurtinorum Chiov.  
                                  Species Euphorbia milii Des Moul. – christplant 
                                  Species Euphorbia millotii Ursch & Leandri  
                                  Species Euphorbia millspaughii V.W. Steinm. & P.E. Berry  
                                  Species Euphorbia minbuensis Gage  
                                  Species Euphorbia minuta Loscos & Pardo  
                                  Species Euphorbia minutula Boiss.  
                                  Species Euphorbia misella S. Watson  
                                  Species Euphorbia misera Benth. – cliff spurge 
                                  Species Euphorbia missurica Raf. – prairie spurge, prairie sandmat, Missouri spurge 
                                  Species Euphorbia mitchelliana Boiss.  
                                  Species Euphorbia mitriformis P.R.O. Bally & S. Carter  
                                  Species Euphorbia X mitsimbinensis Ursch & Leandri  
                                  Species Euphorbia mlanjeana L.C. Leach  
                                  Species Euphorbia momccoyae Lavranos  
                                  Species Euphorbia monacantha Pax  
                                  Species Euphorbia monadenioides M.G. Gilbert  
                                  Species Euphorbia monantha C. Wright ex Boiss.  
                                  Species Euphorbia mongolica (Prokh.) Prokh.  
                                  Species Euphorbia monocyathium (Prokh.) Prokh.  
                                  Species Euphorbia monostyla Prokh.  
                                  Species Euphorbia monteiroi Hook.  
                                  Species Euphorbia montenegrina (Bald.) K. Malý  
                                  Species Euphorbia montereyana Millsp.  
                                  Species Euphorbia moratii Rauh  
                                  Species Euphorbia mosaica P.R.O. Bally & S. Carter  
                                  Species Euphorbia mossambicensis (Klotzsch & Garcke) Boiss.  
                                  Species Euphorbia mossamedensis N.E. Br.  
                                  Species Euphorbia mtolohensis Lodé  
                                  Species Euphorbia mucronulata (Prokh.) Pavlov  
                                  Species Euphorbia muelleri Boiss.  
                                  Species Euphorbia multiceps A. Berger  
                                  Species Euphorbia multiclava P.R.O. Bally & S. Carter  
                                  Species Euphorbia multifolia A.C. White, R.A. Dyer & B. Sloane  
                                  Species Euphorbia multiformis Gaudich. ex Hook. & Arn. – variable sandmat 
                                  Species Euphorbia multinodis Urb.  
                                  Species Euphorbia multiseta Benth.  
                                  Species Euphorbia mundii N.E. Br.  
                                  Species Euphorbia munizii Borhidi  
                                  Species Euphorbia muraltioides N.E. Br.  
                                  Species Euphorbia muricata Thunb.  
                                  Species Euphorbia muscicola Fernald  
                                  Species Euphorbia mwinilungensis L.C. Leach  
                                  Species Euphorbia myrioclada S. Carter  
                                  Species Euphorbia myrsinites L. – myrtle spurge, donkey tail, blue spurge, creeping spurge 
                                  Species Euphorbia myrtillifolia L.  
                                  Species Euphorbia nagleri (Klotzsch & Garcke) Boiss.  
                                  Species Euphorbia nakaii Hurus.  
                                  Species Euphorbia namaquensis N.E. Br.  
                                  Species Euphorbia namibensis Marloth  
                                  Species Euphorbia namuliensis Bruyns  
                                  Species Euphorbia namuskluftensis L.C. Leach  
                                  Species Euphorbia nana Royle  
                                  Species Euphorbia napoides Pax  
                                  Species Euphorbia natalensis Bernh. ex Krauss  
                                  Species Euphorbia X navae Svent.  
                                  Species Euphorbia nayarensis V.W. Steinm.  
                                  Species Euphorbia negromontana N.E. Br.  
                                  Species Euphorbia neilmulleri M.C. Johnst.  
                                  Species Euphorbia neoangolensis Bruyns  
                                  Species Euphorbia neoarborescens Bruyns  
                                  Species Euphorbia neobosseri (Rauh) Rauh  
                                  Species Euphorbia neocaledonica Boiss.  
                                  Species Euphorbia neocapitata Bruyns  
                                  Species Euphorbia neochamaeclada Bruyns  
                                  Species Euphorbia neococcinea Bruyns  
                                  Species Euphorbia neocrispa Bruyns  
                                  Species Euphorbia neocymosa Bruyns  
                                  Species Euphorbia neogillettii Bruyns  
                                  Species Euphorbia neoglabrata Bruyns  
                                  Species Euphorbia neoglaucescens Bruyns  
                                  Species Euphorbia neogoetzei Bruyns  
                                  Species Euphorbia neogossweileri Bruyns  
                                  Species Euphorbia neogracilis Bruyns  
                                  Species Euphorbia neohalipedicola Bruyns  
                                  Species Euphorbia neohumbertii Boiteau  
                                  Species Euphorbia neokaessneri Bruyns  
                                  Species Euphorbia neomontana Bruyns  
                                  Species Euphorbia neoparviflora Bruyns  
                                  Species Euphorbia neopedunculata Bruyns  
                                  Species Euphorbia neopolycnemoides Pax & K. Hoffm.  
                                  Species Euphorbia neoreflexa Bruyns  
                                  Species Euphorbia neorubella Bruyns  
                                  Species Euphorbia neorugosa Bruyns  
                                  Species Euphorbia neospinescens Bruyns  
                                  Species Euphorbia neostolonifera Bruyns  
                                  Species Euphorbia neovirgata Bruyns  
                                  Species Euphorbia nephradenia Barneby – Paria spurge, Utah spurge 
                                  Species Euphorbia nereidum Jahand. & Maire  
                                  Species Euphorbia neriifolia L. – Indian spurgetree 
                                  Species Euphorbia nesemannii R.A. Dyer  
                                  Species Euphorbia nesomii Mayfield  
                                  Species Euphorbia nevadensis Boiss. & Reut.  
                                  Species Euphorbia nicaeensis All.  
                                  Species Euphorbia nicholasii Oudejans  
                                  Species Euphorbia niciciana Borbás ex Novák  
                                  Species Euphorbia nigrispina N.E. Br.  
                                  Species Euphorbia nigrispinoides M.G. Gilbert  
                                  Species Euphorbia nivulia Buch.-Ham.  
                                  Species Euphorbia nocens (L.C. Wheeler) V.W. Steinm.  
                                  Species Euphorbia nodosa Houtt.  
                                  Species Euphorbia nogalensis (A. Hässl.) S. Carter  
                                  Species Euphorbia norfolkiana Boiss.  
                                  Species Euphorbia normannii Schmalh. ex Lipsky  
                                  Species Euphorbia notoptera Boiss.  
                                  Species Euphorbia noxia Pax  
                                  Species Euphorbia nubica N.E. Br.  
                                  Species Euphorbia nubigena L.C. Leach  
                                  Species Euphorbia nummularia Hook. f.  
                                  Species Euphorbia nurae P. Fraga & Rossello  
                                  Species Euphorbia nusbaumeri X. Aubriot & Lowry  
                                  Species Euphorbia nutans Lag. – eyebane, upright spotted spurge, nodding spurge 
                                  Species Euphorbia X nyaradyana Prodán  
                                  Species Euphorbia nyassae Pax  
                                  Species Euphorbia nyikae Pax ex Engl.  
                                  Species Euphorbia oatesii Rolfe  
                                  Species Euphorbia oaxacana B.L. Rob. & Greenm.  
                                  Species Euphorbia obconica Bojer ex N.E. Br.  
                                  Species Euphorbia obcordata Balf. f.  
                                  Species Euphorbia obesa Hook. f.  
                                  Species Euphorbia obliqua F.A. Bauer ex Endl.  
                                  Species Euphorbia oblongata Griseb. – eggleaf spurge, oblong spurge, egg-leaf spurge 
                                  Species Euphorbia oblongifolia (K. Koch) K. Koch  
                                  Species Euphorbia obovata Decne.  
                                  Species Euphorbia occidentaustralica Radcl.-Sm. & Govaerts  
                                  Species Euphorbia ocellata Durand & Hilg. – Contura Creek sandmat 
                                  Species Euphorbia octoradiata H. Lév. & Vaniot  
                                  Species Euphorbia ocymoidea L.  
                                  Species Euphorbia odontophora S. Carter  
                                  Species Euphorbia oerstediana (Klotzsch & Garcke) Boiss. – West Indian spurge 
                                  Species Euphorbia officinarum L.  
                                  Species Euphorbia ogadenensis P.R.O. Bally & S. Carter  
                                  Species Euphorbia oidorrhiza Pojark.  
                                  Species Euphorbia oligoclada L.C. Leach  
                                  Species Euphorbia olowaluana Sherff – alpine sandmat 
                                  Species Euphorbia omariana M.G. Gilbert  
                                  Species Euphorbia operta Halford & W.K. Harris  
                                  Species Euphorbia ophiolitica (P.I. Forst.) Y. Yang  
                                  Species Euphorbia ophthalmica Pers. – Florida hammock sandmat 
                                  Species Euphorbia oppositifolia McVaugh  
                                  Species Euphorbia opuntioides Welw. ex Hiern  
                                  Species Euphorbia oranensis (Croizat) Subils  
                                  Species Euphorbia orbiculata Kunth  
                                  Species Euphorbia orbiculifolia S. Carter  
                                  Species Euphorbia orbifolia (Alain) Oudejans – Mona Island sandmat 
                                  Species Euphorbia orientalis L.  
                                  Species Euphorbia origanoides L.  
                                  Species Euphorbia orizabae Boiss.  
                                  Species Euphorbia orjeni Beck  
                                  Species Euphorbia orobanchoides (P.R.O. Bally) Bruyns  
                                  Species Euphorbia orphanidis Boiss.  
                                  Species Euphorbia orthoclada Baker  
                                  Species Euphorbia osyridea Boiss.  
                                  Species Euphorbia osyridiformis Parsa  
                                  Species Euphorbia otjingandu Swanepoel  
                                  Species Euphorbia otjipembana L.C. Leach  
                                  Species Euphorbia ouachitana Mayfield  
                                  Species Euphorbia ovalleana Phil.  
                                  Species Euphorbia ovata (E. Mey. ex Klotzsch & Garcke) Boiss.  
                                  Species Euphorbia oxycoccoides Boiss.  
                                  Species Euphorbia oxyodonta Boiss.  
                                  Species Euphorbia oxyphylla Boiss.  
                                  Species Euphorbia oxystegia Boiss.  
                                  Species Euphorbia pachyclada S. Carter  
                                  Species Euphorbia pachypodioides Boiteau  
                                  Species Euphorbia pachyrrhiza Kar. & Kir.  
                                  Species Euphorbia pachysantha Baill.  
                                  Species Euphorbia paganorum A. Chev.  
                                  Species Euphorbia palustris L. – marsh spurge 
                                  Species Euphorbia pamirica (Prokh.) Prokh.  
                                  Species Euphorbia pampeana Speg.  
                                  Species Euphorbia pancheri Baill.  
                                  Species Euphorbia pancicii Beck  
                                  Species Euphorbia paniculata Desf.  
                                  Species Euphorbia panjutinii Grossh.  
                                  Species Euphorbia pannonica Host  
                                  Species Euphorbia papilionum S. Carter  
                                  Species Euphorbia papillaris (Boiss.) Raffaelli & Ricceri  
                                  Species Euphorbia papillosa A. St.-Hil.  
                                  Species Euphorbia papillosicapsa L.C. Leach  
                                  Species Euphorbia X paradoxa (Schur) Simonk.  
                                  Species Euphorbia paralias L. – sea spurge 
                                  Species Euphorbia paranensis Dusén  
                                  Species Euphorbia parciflora Urb.  
                                  Species Euphorbia parciramulosa Schweinf.  
                                  Species Euphorbia paredonensis (Millsp.) Oudejans  
                                  Species Euphorbia parifolia N.E. Br.  
                                  Species Euphorbia parishii Greene – Parish's sandmat 
                                  Species Euphorbia parkeri Binojk. & N.P. Balakr.  
                                  Species Euphorbia parodii Oudejans  
                                  Species Euphorbia parryi Engelm. – Parry's sandmat, dune spurge 
                                  Species Euphorbia parva N.E. Br.  
                                  Species Euphorbia parvicaruncula D.C. Hassall  
                                  Species Euphorbia parviceps L.C. Leach  
                                  Species Euphorbia parvicyathophora Rauh  
                                  Species Euphorbia parviflora L.  
                                  Species Euphorbia patentispina S. Carter  
                                  Species Euphorbia patula Mill.  
                                  Species Euphorbia pauciradiata Blatt.  
                                  Species Euphorbia paulianii Ursch & Leandri  
                                  Species Euphorbia pedemontana L.C. Leach  
                                  Species Euphorbia pedersenii Subils  
                                  Species Euphorbia pediculifera Engelm. – Carrizo Mountain sandmat 
                                  Species Euphorbia pedilanthoides Denis  
                                  Species Euphorbia pedroi Molero & Rovira  
                                  Species Euphorbia X peisonis Rech. f.  
                                  Species Euphorbia pekinensis Rupr.  
                                  Species Euphorbia pellegrinii Leandri  
                                  Species Euphorbia peltata Roxb.  
                                  Species Euphorbia peninsularis I.M. Johnst.  
                                  Species Euphorbia pentadactyla Griseb.  
                                  Species Euphorbia pentagona Haw.  
                                  Species Euphorbia pentlandii Boiss.  
                                  Species Euphorbia pentops Marloth ex A.C. White, R.A. Dyer & B. Sloane  
                                  Species Euphorbia peperomioides Boiss.  
                                  Species Euphorbia peplidion Engelm. – low spurge 
                                  Species Euphorbia peplis L.  
                                  Species Euphorbia peplus L. – petty spurge 
                                  Species Euphorbia perangusta R.A. Dyer  
                                  Species Euphorbia perangustifolia S. Carter  
                                  Species Euphorbia perarmata S. Carter  
                                  Species Euphorbia perbracteata Gage  
                                  Species Euphorbia perennans (Shinners) Warnock & M.C. Johnst. – perennial sandmat, Terlingua spurge 
                                  Species Euphorbia pereskiifolia Houllet ex Baill.  
                                  Species Euphorbia perfoliata Scheutz  
                                  Species Euphorbia pergamena Small – Southern Florida sandmat, rocklands spurge 
                                  Species Euphorbia pergracilis P.G. Mey.  
                                  Species Euphorbia peritropoides (Millsp.) V.W. Steinm.  
                                  Species Euphorbia perlignea McVaugh  
                                  Species Euphorbia perpera N.E. Br.  
                                  Species Euphorbia perplexa L.C. Leach  
                                  Species Euphorbia perrieri Drake  
                                  Species Euphorbia persistentifolia L.C. Leach  
                                  Species Euphorbia personata (Croizat) V.W. Steinm.  
                                  Species Euphorbia peruviana L.C. Wheeler  
                                  Species Euphorbia pervilleana Baill.  
                                  Species Euphorbia pervittata S. Carter  
                                  Species Euphorbia pestalozzae Boiss.  
                                  Species Euphorbia petiolaris Sims – manchineel berry 
                                  Species Euphorbia petiolata Banks & Sol.  
                                  Species Euphorbia petitiana A. Rich.  
                                  Species Euphorbia petraea S. Carter  
                                  Species Euphorbia petricola P.R.O. Bally & S. Carter  
                                  Species Euphorbia petrina S. Watson  
                                  Species Euphorbia petrophila C.A. Mey.  
                                  Species Euphorbia X petterssonii Svent.  
                                  Species Euphorbia philippiana (Klotzsch & Garcke) Boiss.  
                                  Species Euphorbia phillipsiae N.E. Br.  
                                  Species Euphorbia phillipsioides S. Carter  
                                  Species Euphorbia phosphorea Mart.  
                                  Species Euphorbia phylloclada Boiss.  
                                  Species Euphorbia phymatosperma Boiss. & Gaill.  
                                  Species Euphorbia physocaulos Mouterde  
                                  Species Euphorbia physoclada Boiss.  
                                  Species Euphorbia picachensis Brandegee  
                                  Species Euphorbia piceoides Thulin  
                                  Species Euphorbia pillansii N.E. Br.  
                                  Species Euphorbia pilosa L.  
                                  Species Euphorbia pilosissima S. Carter  
                                  Species Euphorbia pinetorum (Small) G.L. Webster – pineland spurge 
                                  Species Euphorbia pinkavana M.C. Johnst.  
                                  Species Euphorbia pionosperma V.W. Steinm. & Felger  
                                  Species Euphorbia pirottae N. Terrac.  
                                  Species Euphorbia piscatoria Aiton  
                                  Species Euphorbia piscidermis M.G. Gilbert  
                                  Species Euphorbia pisidica Hub.-Mor. & M.S. Khan  
                                  Species Euphorbia pithyusa L.  
                                  Species Euphorbia plagiantha Drake  
                                  Species Euphorbia planiticola D.C. Hassall  
                                  Species Euphorbia platycephala Pax  
                                  Species Euphorbia platyclada Rauh  
                                  Species Euphorbia platyphyllos L. – broadleaf spurge 
                                  Species Euphorbia platyrrhiza L.C. Leach  
                                  Species Euphorbia platysperma Engelm. ex S. Watson – flatseed sandmat, flat-seeded spurge, dune spurge 
                                  Species Euphorbia plebeia Boiss.  
                                  Species Euphorbia plenispina S. Carter  
                                  Species Euphorbia plumerioides Teijsm. ex Hassk.  
                                  Species Euphorbia podadenia Boiss.  
                                  Species Euphorbia podocarpifolia Urb.  
                                  Species Euphorbia poecilophylla (Prokh.) Prokh.  
                                  Species Euphorbia poeppigii (Klotzsch & Garcke) Boiss.  
                                  Species Euphorbia poissonii Pax  
                                  Species Euphorbia polyacantha Boiss.  
                                  Species Euphorbia polyantha Pax  
                                  Species Euphorbia polycarpa Benth. – smallseed sandmat 
                                  Species Euphorbia polycaula Boiss. & Hohen.  
                                  Species Euphorbia polycephala Marloth  
                                  Species Euphorbia polychroma A. Kern.  
                                  Species Euphorbia polycnemoides Hochst. ex Boiss.  
                                  Species Euphorbia polygalifolia Boiss. & Reut.  
                                  Species Euphorbia polygona Haw.  
                                  Species Euphorbia polygonifolia L. – seaside sandmat 
                                  Species Euphorbia polyphylla Engelm. ex Holz. – Lesser Florida spurge 
                                  Species Euphorbia ponderosa S. Carter  
                                  Species Euphorbia pondii Millsp.  
                                  Species Euphorbia X popovii Rotschild  
                                  Species Euphorbia porphyrantha Phil.  
                                  Species Euphorbia porteriana (Small) Oudejans – Porter's sandmat 
                                  Species Euphorbia portlandica L.  
                                  Species Euphorbia portucasadiana (Croizat) Subils  
                                  Species Euphorbia portulacoides L.  
                                  Species Euphorbia potaninii Prokh.  
                                  Species Euphorbia potentilloides Boiss.  
                                  Species Euphorbia potosina Fernald  
                                  Species Euphorbia primulifolia Baker  
                                  Species Euphorbia proballyana L.C. Leach  
                                  Species Euphorbia procera M. Bieb.  
                                  Species Euphorbia X procopianii Savul. & Rayss  
                                  Species Euphorbia proctorii (D.G. Burch) Correll  
                                  Species Euphorbia procumbens Mill.  
                                  Species Euphorbia prolifera Buch.-Ham. ex D. Don  
                                  Species Euphorbia promecocarpa P.H. Davis  
                                  Species Euphorbia prona S. Carter  
                                  Species Euphorbia prostrata Aiton – ground spurge, blue weed, prostrate sandmat, prostrate spurge 
                                  Species Euphorbia psammogeton P.S. Green  
                                  Species Euphorbia pseudagraria P.A. Smirn.  
                                  Species Euphorbia pseudoapios Maire & Weiller  
                                  Species Euphorbia pseudoburuana P.R.O. Bally & S. Carter  
                                  Species Euphorbia pseudocactus A. Berger  
                                  Species Euphorbia X pseudoesula Schur  
                                  Species Euphorbia pseudoglobosa Marloth  
                                  Species Euphorbia pseudograntii Pax  
                                  Species Euphorbia pseudohirsuta Bruyns  
                                  Species Euphorbia pseudolaevis Bruyns  
                                  Species Euphorbia X pseudolucida Schur  
                                  Species Euphorbia pseudomollis Bruyns  
                                  Species Euphorbia pseudonudicaulis Bruyns  
                                  Species Euphorbia pseudopetiolata Bruyns  
                                  Species Euphorbia pseudoracemosa (P.R.O. Bally) Bruyns  
                                  Species Euphorbia pseudosikkimensis (Hurus. & Yu. Tanaka) Radcl.-Sm.  
                                  Species Euphorbia pseudosimplex Bruyns  
                                  Species Euphorbia pseudostellata Bruyns  
                                  Species Euphorbia pseudotrinervis Bruyns  
                                  Species Euphorbia pseudotuberosa Pax  
                                  Species Euphorbia X pseudovillosa Prodán  
                                  Species Euphorbia pseudovolkensii Bruyns  
                                  Species Euphorbia pteroclada L.C. Leach  
                                  Species Euphorbia pterococca Brot.  
                                  Species Euphorbia pteroneura A. Berger  
                                  Species Euphorbia pubentissima Michx. – false flowering spurge, southeastern flowering spurge 
                                  Species Euphorbia pubiglans N.E. Br.  
                                  Species Euphorbia pudibunda (P.R.O. Bally) Bruyns  
                                  Species Euphorbia pueblensis Brandegee  
                                  Species Euphorbia pulcherrima Willd. ex Klotzsch – poinsettia, nochebuena, flor de pascua 
                                  Species Euphorbia pulvinata Marloth  
                                  Species Euphorbia pumicicola Huft  
                                  Species Euphorbia punctata Delile  
                                  Species Euphorbia punctulata Andersson  
                                  Species Euphorbia punicea Sw.  
                                  Species Euphorbia purpurea (Raf.) Fernald – Darlington's spurge, Darlington's glade spurge 
                                  Species Euphorbia pycnostegia Boiss.  
                                  Species Euphorbia pygmaea Ledeb.  
                                  Species Euphorbia pyrenaica Jord.  
                                  Species Euphorbia pyrifolia Lam.  
                                  Species Euphorbia qarad Deflers  
                                  Species Euphorbia quadrangularis Pax  
                                  Species Euphorbia quadrata Nel  
                                  Species Euphorbia quadrialata Pax  
                                  Species Euphorbia quadrilatera L.C. Leach  
                                  Species Euphorbia quadrispina S. Carter  
                                  Species Euphorbia quaitensis S. Carter  
                                  Species Euphorbia quartziticola Leandri  
                                  Species Euphorbia quinquecostata Volkens  
                                  Species Euphorbia quitensis Boiss.  
                                  Species Euphorbia radians Benth. – sun spurge 
                                  Species Euphorbia radiifera L.C. Leach  
                                  Species Euphorbia radioloides Boiss.  
                                  Species Euphorbia ramena Buddens. & Razaf.  
                                  Species Euphorbia ramipressa Croizat  
                                  Species Euphorbia ramofraga Denis & Humbert ex Leandri  
                                  Species Euphorbia ramosa Seaton  
                                  Species Euphorbia ramulosa L.C. Leach  
                                  Species Euphorbia randrianjohanyi Haev. & J.N. Labat  
                                  Species Euphorbia rangovalensis Leandri  
                                  Species Euphorbia raphanorrhiza (Millsp.) J.F. Macbr.  
                                  Species Euphorbia raphilippii Oudejans  
                                  Species Euphorbia rapulum Kar. & Kir.  
                                  Species Euphorbia rauhii Haev. & J.N. Labat  
                                  Species Euphorbia rayturneri V.W. Steinm. & Jercinovic  
                                  Species Euphorbia razafindratsirae Lavranos  
                                  Species Euphorbia razafinjohanyi Ursch & Leandri  
                                  Species Euphorbia rechingeri Greuter  
                                  Species Euphorbia reclinata P.R.O. Bally & S. Carter  
                                  Species Euphorbia reconciliationis Radcl.-Sm.  
                                  Species Euphorbia rectirama N.E. Br.  
                                  Species Euphorbia recurva Hook. f.  
                                  Species Euphorbia regis-jubae Webb & Berthel.  
                                  Species Euphorbia reineckei Pax  
                                  Species Euphorbia remyi A. Gray ex Boiss. – Remy's sandmat 
                                  Species Euphorbia reniformis Blume  
                                  Species Euphorbia renneyi (S. Carter) Bruyns  
                                  Species Euphorbia repanda (Haw.) Sweet  
                                  Species Euphorbia repens K. Koch  
                                  Species Euphorbia repetita Hochst. ex A. Rich.  
                                  Species Euphorbia reptans P.R.O. Bally & S. Carter  
                                  Species Euphorbia resinifera O. Berg – resin spurge, Euphorbe ŕ résine 
                                  Species Euphorbia restiacea Benth.  
                                  Species Euphorbia restituta N.E. Br.  
                                  Species Euphorbia restricta R.A. Dyer  
                                  Species Euphorbia retrospina Rauh & Gerold  
                                  Species Euphorbia retusa Forssk.  
                                  Species Euphorbia reuteriana Boiss.  
                                  Species Euphorbia revoluta Engelm. – threadstem sandmat, threadstem spurge 
                                  Species Euphorbia rhabdodes Boiss.  
                                  Species Euphorbia rhabdotosperma Radcl.-Sm.  
                                  Species Euphorbia rhizophora (P.R.O. Bally) Bruyns  
                                  Species Euphorbia rhombifolia Boiss.  
                                  Species Euphorbia rhytidosperma Boiss. & Balansa  
                                  Species Euphorbia rhytisperma (Klotzsch & Garcke) Boiss.  
                                  Species Euphorbia richardsiae L.C. Leach  
                                  Species Euphorbia richardsonii Mayfield  
                                  Species Euphorbia ridleyi Croizat  
                                  Species Euphorbia riebeckii Pax  
                                  Species Euphorbia rigida M. Bieb. – upright myrtle spurge 
                                  Species Euphorbia riinae V.W. Steinm.  
                                  Species Euphorbia rimarum Coss. & Balansa  
                                  Species Euphorbia ritchiei (P.R.O. Bally) Bruyns  
                                  Species Euphorbia rivae Pax  
                                  Species Euphorbia robecchii Pax  
                                  Species Euphorbia robivelonae Rauh  
                                  Species Euphorbia rochaensis (Croizat) Alonso Paz & Marchesi  
                                  Species Euphorbia rockii C.N. Forbes – Koolau Range sandmat 
                                  Species Euphorbia roemeriana Scheele – Roemer's spurge 
                                  Species Euphorbia rohlenae Velen.  
                                  Species Euphorbia rosea Retz.  
                                  Species Euphorbia rosescens E.L. Bridges & Orzell – scrub spurge 
                                  Species Euphorbia rossiana Pax  
                                  Species Euphorbia rossica P.A. Smirn.  
                                  Species Euphorbia rossii Rauh & Buchloh  
                                  Species Euphorbia rosularis Fed.  
                                  Species Euphorbia rothiana Spreng.  
                                  Species Euphorbia rowlandii R.A. Dyer  
                                  Species Euphorbia royleana Boiss.  
                                  Species Euphorbia rubella Pax  
                                  Species Euphorbia rubriflora N.E. Br.  
                                  Species Euphorbia rubriseminalis S. Carter ex Boulos  
                                  Species Euphorbia rubrispinosa S. Carter  
                                  Species Euphorbia rubromarginata L.E. Newton  
                                  Species Euphorbia rudolfii N.E. Br.  
                                  Species Euphorbia ruficeps S. Carter  
                                  Species Euphorbia rugosiflora L.C. Leach  
                                  Species Euphorbia ruiziana (Klotzsch & Garcke) Boiss.  
                                  Species Euphorbia ruizlealii Subils  
                                  Species Euphorbia rupestris Ledeb.  
                                  Species Euphorbia ruscifolia (Boiss.) N.E. Br.  
                                  Species Euphorbia rutilis (Millsp.) Standl. & Steyerm.  
                                  Species Euphorbia rzedowskii McVaugh  
                                  Species Euphorbia sabulicola Boiss.  
                                  Species Euphorbia saccharata Boiss.  
                                  Species Euphorbia sachetiana (J. Florence) Govaerts  
                                  Species Euphorbia sahendi Bornm.  
                                  Species Euphorbia sakarahaensis Rauh  
                                  Species Euphorbia salicifolia Host  
                                  Species Euphorbia salota Leandri  
                                  Species Euphorbia salsicola S. Carter  
                                  Species Euphorbia samburuensis P.R.O. Bally & S. Carter  
                                  Species Euphorbia sanctae-catharinae Fayed  
                                  Species Euphorbia santapaui A.N. Henry  
                                  Species Euphorbia sapinii De Wild.  
                                  Species Euphorbia sarawschanica Regel  
                                  Species Euphorbia sarcoceras O.L.M. Silva & Cordeiro  
                                  Species Euphorbia sarcodes Boiss.  
                                  Species Euphorbia sarcostemmoides J.H. Willis  
                                  Species Euphorbia sareciana M.G. Gilbert  
                                  Species Euphorbia sareptana Becker  
                                  Species Euphorbia sarmentosa Welw. ex Pax  
                                  Species Euphorbia saudiarabica Fayed & D. Al-Zahrani  
                                  Species Euphorbia saurica Baikov  
                                  Species Euphorbia saxatilis Jacq.  
                                  Species Euphorbia saxicola Radcl.-Sm.  
                                  Species Euphorbia saxorum P.R.O. Bally & S. Carter  
                                  Species Euphorbia scabrifolia Kurz  
                                  Species Euphorbia scandens Kunth  
                                  Species Euphorbia scarlatina S. Carter  
                                  Species Euphorbia scatorhiza S. Carter  
                                  Species Euphorbia schaijesii (Malaisse) Bruyns  
                                  Species Euphorbia scheffleri Pax  
                                  Species Euphorbia schickendantzii Hieron.  
                                  Species Euphorbia schiedeana (Klotzsch & Garcke) Mayfield ex C. Nelson  
                                  Species Euphorbia schillingii Radcl.-Sm.  
                                  Species Euphorbia schimperi C. Presl  
                                  Species Euphorbia schimperiana Scheele  
                                  Species Euphorbia schinzii Pax  
                                  Species Euphorbia schizacantha Pax  
                                  Species Euphorbia schizolepis F. Muell. ex Boiss.  
                                  Species Euphorbia schizoloba Engelm. – Mojave spurge 
                                  Species Euphorbia schlechtendalii Boiss.  
                                  Species Euphorbia schlechteri Pax  
                                  Species Euphorbia schmitzii L.C. Leach  
                                  Species Euphorbia schoenlandii Pax  
                                  Species Euphorbia schottiana Boiss.  
                                  Species Euphorbia schubei Pax  
                                  Species Euphorbia schugnanica B. Fedtsch.  
                                  Species Euphorbia schultzii Benth.  
                                  Species Euphorbia schumannii Radcl.-Sm.  
                                  Species Euphorbia schweinfurthii Balf. f.  
                                  Species Euphorbia sciadophila Boiss.  
                                  Species Euphorbia scitula L.C. Leach  
                                  Species Euphorbia sclerocyathium Korovin & Popov  
                                  Species Euphorbia sclerophylla Boiss.  
                                  Species Euphorbia scopulorum Brandegee  
                                  Species Euphorbia scordiifolia Jacq.  
                                  Species Euphorbia scotanum Schltdl.  
                                  Species Euphorbia scripta Sommier & Levier  
                                  Species Euphorbia scutiformis V.W. Steinm. & P.E. Berry  
                                  Species Euphorbia scyphadena S. Carter  
                                  Species Euphorbia sebastinei Binojk. & N.P. Balakr.  
                                  Species Euphorbia sebsebei M.G. Gilbert  
                                  Species Euphorbia segetalis L. – grainfield spurge 
                                  Species Euphorbia segoviensis (Klotzsch & Garcke) Boiss.  
                                  Species Euphorbia seguieriana Neck.  
                                  Species Euphorbia seibanica Lavranos & Gifri  
                                  Species Euphorbia sekukuniensis R.A. Dyer  
                                  Species Euphorbia seleri Donn. Sm.  
                                  Species Euphorbia selloi (Klotzsch & Garcke) Boiss.  
                                  Species Euphorbia selousiana S. Carter  
                                  Species Euphorbia semiperfoliata Viv.  
                                  Species Euphorbia semivillosa (Prokh.) Krylov  
                                  Species Euphorbia semperflorens L.C. Leach  
                                  Species Euphorbia sendaica Makino  
                                  Species Euphorbia senguptae N.P. Balakr. & Subr.  
                                  Species Euphorbia sennii Chiov.  
                                  Species Euphorbia septentrionalis P.R.O. Bally & S. Carter  
                                  Species Euphorbia sepulta P.R.O. Bally & S. Carter  
                                  Species Euphorbia serendipita L.E. Newton  
                                  Species Euphorbia seretii De Wild.  
                                  Species Euphorbia serpens Kunth – matted sandmat, creeping spurge, round-leafed spurge 
                                  Species Euphorbia serpentini Novák  
                                  Species Euphorbia serpyllifolia Pers. – thymeleaf sandmat 
                                  Species Euphorbia serrata L. – serrate spurge, toothed spurge, saw-toothed spurge 
                                  Species Euphorbia serratifolia S. Carter  
                                  Species Euphorbia serrula Engelm. – sawtooth sandmat 
                                  Species Euphorbia seshachalamensis K. Prasad & Prasanna  
                                  Species Euphorbia sessiliflora Roxb.  
                                  Species Euphorbia sessilifolia Klotzsch ex Boiss.  
                                  Species Euphorbia setiloba Engelm. ex Torr. – Yuma sandmat, fringed spurge, shaggy spurge 
                                  Species Euphorbia setispina S. Carter  
                                  Species Euphorbia setosa (Boiss.) Müll. Arg.  
                                  Species Euphorbia sewerzowii (Prokh.) Pavlov  
                                  Species Euphorbia sharkoensis Baill.  
                                  Species Euphorbia sharmae U.C. Bhattach.  
                                  Species Euphorbia shebeliensis (M.G. Gilbert) Bruyns  
                                  Species Euphorbia sieboldiana C. Morren & Decne.  
                                  Species Euphorbia sikkimensis Boiss.  
                                  Species Euphorbia silenifolia (Haw.) Sweet  
                                  Species Euphorbia similiramea S. Carter  
                                  Species Euphorbia simulans (L.C. Wheeler) Warnock & M.C. Johnst. – mimicking sandmat, similar spurge 
                                  Species Euphorbia sinaloensis Brandegee  
                                  Species Euphorbia sinclairiana Benth.  
                                  Species Euphorbia sintenisii Boiss. ex Freyn  
                                  Species Euphorbia sipolisii N.E. Br.  
                                  Species Euphorbia skottsbergii Sherff – coastal sandmat 
                                  Species Euphorbia smirnovii Geltman  
                                  Species Euphorbia smithii S. Carter  
                                  Species Euphorbia X soanieranensis Ursch & Leandri  
                                  Species Euphorbia socotrana Balf. f.  
                                  Species Euphorbia sogdiana Popov  
                                  Species Euphorbia sojakii (Chrtek & Krísa) Dubovik  
                                  Species Euphorbia somalensis Pax  
                                  Species Euphorbia X somboriensis Prodán  
                                  Species Euphorbia songweana S. Carter  
                                  Species Euphorbia sonorae Rose  
                                  Species Euphorbia soobyi McVaugh  
                                  Species Euphorbia X sooi T. Simon  
                                  Species Euphorbia soongarica Boiss.  
                                  Species Euphorbia sororia Schrenk  
                                  Species Euphorbia X souliei Sennen  
                                  Species Euphorbia sparrmanii Boiss.  
                                  Species Euphorbia sparsiflora A. Heller – Wahiawa bog sandmat 
                                  Species Euphorbia sparsiglandulosa Ponert  
                                  Species Euphorbia spartaria N.E. Br.  
                                  Species Euphorbia spartiformis Mobayen  
                                  Species Euphorbia spathulata Lam. – roughpod spurge, warty spurge 
                                  Species Euphorbia speciosa L.C. Leach  
                                  Species Euphorbia specksii Rauh  
                                  Species Euphorbia spectabilis (S. Carter) Bruyns  
                                  Species Euphorbia spellenbergiana Mayfield & V.W. Steinm.  
                                  Species Euphorbia sphaerorhiza Benth.  
                                  Species Euphorbia spicata E. Mey. ex Boiss.  
                                  Species Euphorbia spinea N.E. Br.  
                                  Species Euphorbia spinidens (Prokh.) Bornm. ex Prokh.  
                                  Species Euphorbia spinosa L.  
                                  Species Euphorbia spinulosa (S. Carter) Bruyns  
                                  Species Euphorbia spiralis Balf. f.  
                                  Species Euphorbia spissa Thulin  
                                  Species Euphorbia spissiflora S. Carter  
                                  Species Euphorbia spruceana Boiss.  
                                  Species Euphorbia squamigera Loisel.  
                                  Species Euphorbia squamosa Willd.  
                                  Species Euphorbia standleyi (Millsp.) Oudejans  
                                  Species Euphorbia stapelioides Boiss.  
                                  Species Euphorbia stapfii A. Berger  
                                  Species Euphorbia stellata Willd.  
                                  Species Euphorbia stellispina Haw.  
                                  Species Euphorbia X stenocalli Croizat  
                                  Species Euphorbia stenocaulis Bruyns  
                                  Species Euphorbia stenoclada Baill.  
                                  Species Euphorbia stenophylla (Klotzsch & Garcke) Boiss.  
                                  Species Euphorbia stepposa Zoz  
                                  Species Euphorbia stevenii F.M. Bailey  
                                  Species Euphorbia stictospora Engelm. – slimseed sandmat, mat spurge, narrow-seeded spurge 
                                  Species Euphorbia stoddartii Fosberg  
                                  Species Euphorbia stolonifera Marloth ex A.C. White, R.A. Dyer & B. Sloane  
                                  Species Euphorbia stracheyi Boiss.  
                                  Species Euphorbia strangulata N.E. Br.  
                                  Species Euphorbia striata Thunb.  
                                  Species Euphorbia stricta L.  
                                  Species Euphorbia strictior Holz. – panhandle spurge 
                                  Species Euphorbia strigosa Hook. & Arn.  
                                  Species Euphorbia stygiana H.C. Watson  
                                  Species Euphorbia subamplexicaulis Kar. & Kir.  
                                  Species Euphorbia subcordata Ledeb.  
                                  Species Euphorbia suborbicularis Thulin  
                                  Species Euphorbia subpeltata S. Watson  
                                  Species Euphorbia subpeltatophylla Rauh  
                                  Species Euphorbia subreniformis S. Watson  
                                  Species Euphorbia subsalsa Hiern  
                                  Species Euphorbia subscandens P.R.O. Bally & S. Carter  
                                  Species Euphorbia subterminalis N.E. Br.  
                                  Species Euphorbia subtilis (Prokh.) Prokh.  
                                  Species Euphorbia subtrifoliata Rusby  
                                  Species Euphorbia succedanea L.C. Wheeler  
                                  Species Euphorbia succulenta (Schweick.) Bruyns  
                                  Species Euphorbia sudanica A. Chev.  
                                  Species Euphorbia suffulta Bruyns  
                                  Species Euphorbia sulcata Lens ex Loisel.  
                                  Species Euphorbia sulphurea Pahlevani  
                                  Species Euphorbia sultan-hassei Strid, Bentzer, Bothmer, Engstrand & M.A. Gust.  
                                  Species Euphorbia sumati S. Carter  
                                  Species Euphorbia sumbawensis Boiss.  
                                  Species Euphorbia surinamensis Lanj.  
                                  Species Euphorbia susan-holmesiae Binojk. & Gopalan  
                                  Species Euphorbia susannae Marloth  
                                  Species Euphorbia suzannae-marnierae Rauh & Petignat  
                                  Species Euphorbia syncalycina Bruyns  
                                  Species Euphorbia syncameronii Bruyns  
                                  Species Euphorbia systyla Edgew.  
                                  Species Euphorbia systyloides Pax  
                                  Species Euphorbia szovitsii Fisch. & C.A. Mey.  
                                  Species Euphorbia taboraensis A. Hässl.  
                                  Species Euphorbia tacnensis Phil.  
                                  Species Euphorbia taifensis Fayed & D. Al-Zahrani – Amaq, Amaqah, Amaqat al-ghanam 
                                  Species Euphorbia taihsiensis (Chaw & Koutnik) Oudejans  
                                  Species Euphorbia talaina Radcl.-Sm.  
                                  Species Euphorbia talastavica (Prokh.) Prokh.  
                                  Species Euphorbia taluticola Wiggins  
                                  Species Euphorbia tamanduana Boiss.  
                                  Species Euphorbia tamaulipasana (Millsp.) Oudejans  
                                  Species Euphorbia tanaensis P.R.O. Bally & S. Carter  
                                  Species Euphorbia tannensis Spreng.  
                                  Species Euphorbia tanquahuete Sessé & Moç. – Leche Maria, Palo cucaracha, Palo mulato, Palo amarillo 
                                  Species Euphorbia tarapacana Phil.  
                                  Species Euphorbia tardieuana Leandri  
                                  Species Euphorbia taruensis S. Carter  
                                  Species Euphorbia tauricola Prokh.  
                                  Species Euphorbia taurinensis All.  
                                  Species Euphorbia tavoyensis N.P. Balakr.  
                                  Species Euphorbia teheranica Boiss.  
                                  Species Euphorbia tehuacana (Brandegee) V.W. Steinm.  
                                  Species Euphorbia teixeirae L.C. Leach  
                                  Species Euphorbia teke Schweinf. ex Pax  
                                  Species Euphorbia telephioides Chapm. – Telephus spurge 
                                  Species Euphorbia tenax Burch.  
                                  Species Euphorbia tenuirama Schweinf. ex A. Berger  
                                  Species Euphorbia tenuispinosa Gilli  
                                  Species Euphorbia teres M. Machado & Hofacker  
                                  Species Euphorbia terracina L. – Geraldton carnation weed, Terracina spurge, carnation spurge 
                                  Species Euphorbia tescorum S. Carter  
                                  Species Euphorbia teskensuensis Orazova  
                                  Species Euphorbia tetracantha Rendle  
                                  Species Euphorbia tetracanthoides Pax  
                                  Species Euphorbia tetragona Haw.  
                                  Species Euphorbia tetrapora Engelm. – weak spurge 
                                  Species Euphorbia tetraptera Baker  
                                  Species Euphorbia tettensis Klotzsch  
                                  Species Euphorbia texana Boiss. – Texas spurge 
                                  Species Euphorbia theriaca L.C. Wheeler – Terlingua sandmat 
                                  Species Euphorbia thinophila Phil.  
                                  Species Euphorbia tholicola L.C. Leach  
                                  Species Euphorbia thompsonii Holmboe  
                                  Species Euphorbia thomsoniana Boiss.  
                                  Species Euphorbia thouarsiana Baill.  
                                  Species Euphorbia thulinii S. Carter  
                                  Species Euphorbia thymifolia L. – gulf sandmat 
                                  Species Euphorbia thyrsoidea Boiss.  
                                  Species Euphorbia tiarata Mayfield  
                                  Species Euphorbia tibetica Boiss.  
                                  Species Euphorbia tinianensis Hosok.  
                                  Species Euphorbia tirucalli L. – Indiantree spurge 
                                  Species Euphorbia tisserantii A. Chev. & Sillans – Songowa 
                                  Species Euphorbia tithymaloides L. – redbird flower 
                                  Species Euphorbia togakusensis Hayata  
                                  Species Euphorbia tomentella Engelm. ex Boiss.  
                                  Species Euphorbia tomentulosa S. Watson  
                                  Species Euphorbia tongchuanensis C.Y. Wu & J.S. Ma  
                                  Species Euphorbia torralbasii Urb.  
                                  Species Euphorbia torrei (L.C. Leach) Bruyns  
                                  Species Euphorbia torta Pax & K. Hoffm.  
                                  Species Euphorbia tortilis Rottler ex Ainslie  
                                  Species Euphorbia tortirama R.A. Dyer  
                                  Species Euphorbia tortistyla N.E. Br.  
                                  Species Euphorbia trachysperma Engelm. – San Pedro River sandmat 
                                  Species Euphorbia trancapatae (Croizat) J.F. Macbr.  
                                  Species Euphorbia transoxana (Prokh.) Prokh.  
                                  Species Euphorbia transtagana Boiss.  
                                  Species Euphorbia transvaalensis Schltr.  
                                  Species Euphorbia tresmariae (Millsp.) Standl.  
                                  Species Euphorbia triaculeata Forssk.  
                                  Species Euphorbia trialata (Huft) V.W. Steinm.  
                                  Species Euphorbia triangolensis Bruyns  
                                  Species Euphorbia triangularis Desf. ex A. Berger  
                                  Species Euphorbia trichadenia Pax  
                                  Species Euphorbia trichiocyma S. Carter  
                                  Species Euphorbia trichophylla Baker  
                                  Species Euphorbia trichotoma Kunth – sanddune spurge, sand dune spurge 
                                  Species Euphorbia tricolor Greenm.  
                                  Species Euphorbia tridentata Lam.  
                                  Species Euphorbia triflora Schott, Nyman & Kotschy  
                                  Species Euphorbia trigona Mill.  
                                  Species Euphorbia triodonta (Prokh.) Prokh.  
                                  Species Euphorbia tripartita S. Carter  
                                  Species Euphorbia tristis Besser  
                                  Species Euphorbia tshuiensis (Prokh.) Serg. ex Krylov  
                                  Species Euphorbia tsimbazazae Leandri  
                                  Species Euphorbia tubadenia Mayfield ex Ya Yang  
                                  Species Euphorbia tuberifera N.E. Br.  
                                  Species Euphorbia tuberosa L.  
                                  Species Euphorbia tuckeyana Steud. ex Webb  
                                  Species Euphorbia tuerckheimii Urb.  
                                  Species Euphorbia tulearensis (Rauh) Rauh  
                                  Species Euphorbia tumistyla (D.G. Burch) Radcl.-Sm.  
                                  Species Euphorbia turbiniformis Chiov.  
                                  Species Euphorbia turczaninowii Kar. & Kir.  
                                  Species Euphorbia turkanensis S. Carter  
                                  Species Euphorbia turkestanica Regel  
                                  Species Euphorbia turpinii Boiss. – Turpin's sandmat 
                                  Species Euphorbia ugandensis Pax & K. Hoffm.  
                                  Species Euphorbia uhligiana Pax  
                                  Species Euphorbia uliginosa Welw. ex Boiss.  
                                  Species Euphorbia umbellata (Pax) Bruyns  
                                  Species Euphorbia umbelliformis (Urb. & Ekman) V.W. Steinm. & P.E. Berry  
                                  Species Euphorbia umbellulata Engelm. ex Boiss.  
                                  Species Euphorbia umbonata S. Carter  
                                  Species Euphorbia umbrosa Bertero ex Spreng.  
                                  Species Euphorbia umfoloziensis Peckover  
                                  Species Euphorbia undulata M. Bieb.  
                                  Species Euphorbia undulatifolia Janse  
                                  Species Euphorbia unicornis R.A. Dyer  
                                  Species Euphorbia X uniflora Raf.  
                                  Species Euphorbia uniglans M.G. Gilbert  
                                  Species Euphorbia unispina N.E. Br.  
                                  Species Euphorbia uralensis Fisch. ex Link  
                                  Species Euphorbia usambarica Pax  
                                  Species Euphorbia uzmuk S. Carter & J.R.I. Wood  
                                  Species Euphorbia vaalputsiana L.C. Leach  
                                  Species Euphorbia vaginulata Griseb.  
                                  Species Euphorbia vajravelui Binojk. & N.P. Balakr.  
                                  Species Euphorbia valdevillosocarpa Arvat & Nyár.  
                                  Species Euphorbia valerianifolia Lam.  
                                  Species Euphorbia vallaris L.C. Leach  
                                  Species Euphorbia valliniana Belli  
                                  Species Euphorbia vallis-mortae (Millsp.) J.T. Howell – Death Valley sandmat 
                                  Species Euphorbia vandermerwei R.A. Dyer  
                                  Species Euphorbia variabilis Ces.  
                                  Species Euphorbia varians Haw.  
                                  Species Euphorbia vauthieriana Boiss.  
                                  Species Euphorbia velenovskyi Bornm.  
                                  Species Euphorbia velleriflora (Klotzsch & Garcke) Boiss. – Caliche sandmat 
                                  Species Euphorbia velligera S. Schauer  
                                  Species Euphorbia venefica Tremaux ex Kotschy  
                                  Species Euphorbia veneris M.S. Khan  
                                  Species Euphorbia venteri L.C. Leach ex R.H. Archer & S. Carter  
                                  Species Euphorbia verapazensis Standl. & Steyerm.  
                                  Species Euphorbia vermiculata Raf. – wormseed sandmat, wormseed spurge 
                                  Species Euphorbia verrucosa L.  
                                  Species Euphorbia verruculosa N.E. Br.  
                                  Species Euphorbia vervoorstii Subils  
                                  Species Euphorbia vestita Boiss.  
                                  Species Euphorbia vezorum Leandri  
                                  Species Euphorbia viduiflora L.C. Leach  
                                  Species Euphorbia viguieri Denis  
                                  Species Euphorbia villifera Scheele – hairy sandmat, hairy spurge 
                                  Species Euphorbia viminea Hook. f.  
                                  Species Euphorbia violacea Greenm.  
                                  Species Euphorbia virgata Waldst. & Kit. – leafy spurge 
                                  Species Euphorbia viridis (Klotzsch & Garcke) Boiss.  
                                  Species Euphorbia viridula Cordem. ex Radcl.-Sm.  
                                  Species Euphorbia virosa Willd.  
                                  Species Euphorbia viscoides Boiss.  
                                  Species Euphorbia vittata S. Carter  
                                  Species Euphorbia vizcainensis Maya-Lastra & V.W. Steinm.  
                                  Species Euphorbia volkmanniae Dinter  
                                  Species Euphorbia vulcanorum S. Carter  
                                  Species Euphorbia X wagneri Soó  
                                  Species Euphorbia wakefieldii N.E. Br.  
                                  Species Euphorbia wallichii Hook. f.  
                                  Species Euphorbia waringiae Rauh & Gerold  
                                  Species Euphorbia watanabei Makino  
                                  Species Euphorbia waterbergensis R.A. Dyer  
                                  Species Euphorbia weberbaueri Mansf.  
                                  Species Euphorbia wellbyi N.E. Br.  
                                  Species Euphorbia wheeleri Baill.  
                                  Species Euphorbia whellanii L.C. Leach  
                                  Species Euphorbia whitei L.C. Wheeler  
                                  Species Euphorbia whyteana Baker f.  
                                  Species Euphorbia wildii L.C. Leach  
                                  Species Euphorbia williamsonii L.C. Leach  
                                  Species Euphorbia wilmaniae Marloth  
                                  Species Euphorbia X wimmeriana J. Wagner  
                                  Species Euphorbia wittmannii Boiss.  
                                  Species Euphorbia wrightii Torr. & A. Gray – Wright's spurge 
                                  Species Euphorbia xalapensis Kunth  
                                  Species Euphorbia xanti Engelm. ex Boiss.  
                                  Species Euphorbia xbacensis Millsp.  
                                  Species Euphorbia xylacantha Pax  
                                  Species Euphorbia xylophylloides Brongn. ex Lem.  
                                  Species Euphorbia xylopoda Greenm.  
                                  Species Euphorbia yanjinensis W.T. Wang  
                                  Species Euphorbia yaquiana Tidestr. – Hairy Mojave spurge 
                                  Species Euphorbia yaroslavii Poljakov  
                                  Species Euphorbia yattana (P.R.O. Bally) Bruyns  
                                  Species Euphorbia yucatanensis (Millsp.) Standl.  
                                  Species Euphorbia zakamenae Leandri  
                                  Species Euphorbia zambesiana Benth.  
                                  Species Euphorbia X zanaharensis Ursch & Leandri  
                                  Species Euphorbia zierioides Boiss.  
                                  Species Euphorbia zonosperma Müll. Arg.  
                                  Species Euphorbia zoutpansbergensis R.A. Dyer