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Source: Germplasm Resources Information Network (GRIN), 2007 - 2011, database (version 2011)

ITIS records citing this source
 
 Kingdom Plantae
  Abutilon megapotamicum (A. Spreng.) A. St.-Hil. & Naudin -- accepted -- trailing abutilon
  Abutilon mollissimum (Cav.) Sweet -- accepted
  Acacia latifolia Benth. -- accepted
  Acacia pravissima F. Muell. ex Benth. -- accepted -- wedge-leaf wattle
  Acaena myriophylla Lindl. -- accepted -- cadillo
  Acalypha indica L. -- accepted -- Indian copperleaf
  Acalypha lanceolata Willd. -- accepted
  Acca sellowiana (O. Berg) Burret -- accepted -- feijoa
  Acer buergerianum Miq. -- accepted -- trident maple
  Acer cissifolium (Siebold & Zucc.) K. Koch -- accepted -- ivyleaf maple
  Acer diabolicum Blume ex K. Koch -- accepted
  Acer griseum (Franch.) Pax -- accepted -- paperbark maple
  Acer negundo ssp. californicum (Torr. & A. Gray) Wesm. -- not accepted
  Acer opalus Mill. -- accepted
  Acer opalus ssp. obtusatum (Waldst. & Kit. ex Willd.) Gams -- accepted
  Achyranthes argentea Lam. -- not accepted
  Achyranthes aspera var. obtusifolia (Lam.) Suess. -- not accepted
  Achyranthes aspera var. sicula L. -- accepted
  Achyranthes bidentata Blume -- accepted -- pig's knee
  Achyranthes obtusifolia Lam. -- not accepted
  Aconitum anthora L. -- accepted -- yellow monkshood
  Aconitum carmichaelii Debeaux -- accepted -- Carmichael's monkshood
  Aconitum ferox Wall. ex Ser. -- accepted -- Indian aconite
  Aconitum fischeri Rchb. -- accepted -- Fischer monkshood
  Aconitum lycoctonum ssp. vulparia (Rchb.) Nyman -- accepted
  Aconitum vulparia Rchb. -- not accepted -- wolfsbane
  Aconogonon alpinum (All.) Schur -- accepted -- Alaska wild rhubarb
  Aconogonon campanulatum (Hook. f.) H. Hara -- accepted -- bellflower smartweed
  Actaea spicata L. -- accepted -- baneberry
  Adiantopsis Fée -- accepted
  Adiantopsis pedata (Hook.) T. Moore -- accepted
  Adiantopsis radiata (L.) Fée -- accepted
  Adiantum deltoideum Sw. -- accepted
  Adiantum dolosum Kunze -- accepted
  Adiantum lucidum (Cav.) Sw. -- accepted
  Aegle marmelos (L.) Corręa -- accepted -- Indian bael
  Aeonium undulatum Webb & Berthel. -- accepted -- saucer-plant
  Aerva javanica (Burm. f.) Juss. ex Schult. -- accepted -- Java aerva
  Aerva lanata (L.) Juss. ex Schult. -- accepted
  Aesandra butyracea (Roxb.) Baehni -- not accepted
  Aeschynomene aspera L. -- accepted -- sola pith plant
  Aeschynomene brasiliana (Poir.) DC. -- accepted
  Aeschynomene elaphroxylon (Guill. & Perr.) Taub. -- accepted -- ambatch
  Aeschynomene elegans Schltdl. & Cham. -- accepted
  Aeschynomene falcata (Poir.) DC. -- accepted -- Australian joint-vetch
  Aeschynomene portoricensis Urb. -- accepted
  Aesculus turbinata Blume -- accepted -- Japanese horse chestnut
  Aethionema W.T. Aiton -- accepted
  Afzelia africana Sm. ex Pers. -- accepted -- African mahogany
  Afzelia bella Harms -- accepted -- pretty afzelia
  Afzelia quanzensis Welw. -- accepted -- pod mahogany
  Agathosma betulina (P.J. Bergius) Pillans -- accepted -- buchu
  Agathosma crenulata (L.) Pillans -- accepted -- buchu
  Agathosma serratifolia (Curtis) Spreeth -- accepted -- longleaf buchu
  Alectra aspera (Cham. & Schltdl.) L.O. Williams -- accepted
  Aleurites cordatus (Thunb.) R. Br. ex Steud. -- not accepted
  Aleurites javanicus Gand. -- not accepted
  Aleurites moluccanus (L.) Willd. -- accepted
  Aleurites montanus (Lour.) E.H. Wilson -- not accepted
  Aleurites trilobus J.R. Forst. & G. Forst. -- not accepted
  Aleurites trispermus Blanco -- not accepted
  Alkanna tinctoria (L.) Tausch -- accepted
  Allophylus zeylanicus L. -- accepted
  Alnaster Spach -- not accepted
  Alnaster sinuatus (Regel) Czerep. -- not accepted
  Alnus viridis (Chaix) DC. -- accepted -- green alder
  Alnus viridis ssp. crispa (Aiton) Turrill -- accepted -- mountain alder
  Alnus viridis ssp. fruticosa (Rupr.) Nyman -- accepted -- Siberian alder
  Alnus viridis ssp. sinuata (Regel) Á. Löve & D. Löve -- accepted
  Alphitonia excelsa (Fenzl) Reissek ex Benth. -- accepted
  Alsinidendron H. Mann -- not accepted
  Alternanthera hassleriana Chodat ex Chodat & Hassler -- accepted -- Hassler's alternanthera
  Alternanthera olivacea (Urb.) Urb. -- accepted
  Alyssoides utriculata (L.) Medik. -- accepted
  Alyssum alpestre L. -- accepted
  Alyssum argenteum All. -- accepted
  Alyssum bornmuelleri Hausskn. ex Degen -- accepted
  Alyssum borzaeanum Nyar. -- accepted
  Alyssum condensatum Boiss. & Hausskn. -- accepted
  Alyssum corsicum Duby -- accepted -- madwort
  Alyssum diffusum Ten. -- accepted
  Alyssum erosulum Gennari & Pestal. ex Clementi -- accepted
  Alyssum idaeum Boiss. & Heldr. -- accepted
  Alyssum lenense Adams -- accepted
  Alyssum markgrafii O.E. Schulz -- accepted
  Alyssum minus (L.) Rothm. -- not accepted -- alyssum, European alyssum
  Alyssum serpyllifolium Desf. -- accepted
  Alyssum strigosum Banks & Sol. -- accepted -- alyssum
  Alyssum tortuosum Waldst. & Kit. ex Willd. -- accepted
  Amaranthus acutilobus Uline & W.L. Bray -- accepted -- sharplobe amaranth
  Amelanchier lamarckii F.G. Schroed. -- accepted
  Amelanchier ovalis Medik. -- accepted
  Amelanchier pallida Greene -- not accepted -- pale serviceberry
  Ammannia senegalensis Lam. -- accepted
  Ammopiptanthus S.H. Cheng -- accepted
  Ammopiptanthus mongolicus (Maxim. ex Kom.) S. H. Cheng -- accepted
  Amoreuxia palmatifida DC. -- accepted -- Mexican yellowshow, throwup weed
  Anacampseros L. -- accepted
  Anacampseros albidiflora Poelln. -- accepted
  Anacampseros alstonii Schönland -- not accepted
  Anacampseros arachnoides (Haw.) Sims -- accepted
  Anacampseros baeseckei Dinter -- accepted
  Anacampseros bayeriana S.A. Hammer -- accepted
  Anacampseros comptonii Pillans -- accepted
  Anacampseros dielsiana Dinter -- accepted
  Anacampseros filamentosa (Haw.) Sims -- accepted
  Anacampseros filamentosa ssp. filamentosa (Haw.) Sims -- accepted
  Anacampseros filamentosa ssp. namaquensis (H. Pearson & Stephens) G.D. Rowley -- accepted
  Anacampseros filamentosa ssp. tomentosa (A. Berger) Gerbaulet -- accepted
  Anacampseros lanceolata (Haw.) Sweet -- accepted
  Anacampseros lanceolata ssp. lanceolata (Haw) Sweet -- accepted
  Anacampseros lanceolata ssp. nebrownii (Poelln.) Gerbaulet -- accepted
  Anacampseros marlothii Poelln. -- accepted
  Anacampseros retusa Poelln. -- accepted
  Anacampseros rufescens (Haw.) Sweet -- accepted
  Anacampseros scopata G. Will. -- accepted
  Anacampseros subnuda Poelln. -- accepted
  Anacampseros subnuda ssp. lubbersii (Bleck) Gerbaulet -- accepted
  Anacampseros subnuda ssp. subnuda Poelln. -- accepted
  Anacampseros telephiastrum DC. -- accepted
  Androsace idahoensis (Douglass M. Hend.) Cubey -- accepted
  Anemone coronaria L. -- accepted -- lilies-of-the-field
  Anemone pulsatilla L. -- accepted -- European pasqueflower
  Anemone sylvestris L. -- accepted -- snowdrop windflower
  Angelica archangelica ssp. litoralis (Fr.) Thell. -- accepted -- Norwegian angelica
  Angelica litoralis Fr. -- not accepted
  Angostura trifoliata (Willd.) T.S. Elias -- accepted
  Anguria trilobata (L.) Jacq. -- not accepted
  Aniseia uniflora (Burm. f.) Choisy -- not accepted
  Anisodontea capensis (L.) D.M. Bates -- accepted -- Cape African-queen
  Annona mucosa Jacq. -- accepted
  Annona purpurea Moc. & Sessé ex Dunal -- accepted
  Annona senegalensis Pers. -- accepted -- wild custard-apple
  Anoda acerifolia Cav. -- accepted
  Anogeissus latifolia (Roxb. ex DC.) Wall. ex Guill. & Perr. -- accepted
  Anopteris heterophylla (L.) Diels -- not accepted
  Anopteris hexagona (L.) C. Chr. -- not accepted -- Moore's brake
  Antidaphne viscoidea Poepp. & Endl. -- accepted
  Antidesma dallachyanum Baill. -- not accepted -- Herbert River cherry
  Antigonon guatimalense Meisn. -- accepted
  Antrophyum plantagineum (Cav.) Kaulf. -- accepted
  Apeiba tibourbou Aubl. -- accepted
  Aphanamixis polystachya (Wall.) R. Parker -- accepted
  Apium graveolens var. dulce (Mill.) DC. -- accepted -- wild celery
  Apium graveolens var. rapaceum (Mill.) Gaudin -- accepted -- celeriac
  Apodanthera mathewsii Arn. ex Hook. -- accepted
  Aquilaria acuminata (Merr.) Quisumb. -- not accepted
  Aquilaria agallocha Roxb. -- not accepted
  Aquilaria apiculata Merr. -- accepted
  Aquilaria baillonii Pierre ex Lecomte -- accepted
  Aquilaria banaensis P.H. Ho -- accepted
  Aquilaria beccariana Tiegh. -- accepted
  Aquilaria brachyantha (Merr.) Hallier f. -- accepted
  Aquilaria citrinicarpa (Elmer) Hallier f. -- accepted
  Aquilaria crassna Pierre ex Lecomte -- accepted
  Aquilaria cumingiana (Decne.) Ridl. -- accepted
  Aquilaria filaria (Oken) Merr. -- accepted
  Aquilaria hirta Ridl. -- accepted
  Aquilaria malaccensis Lam. -- accepted
  Aquilaria microcarpa Baill. -- accepted
  Aquilaria parvifolia (Quisumb.) Ding Hou -- accepted
  Aquilaria rostrata Ridl. -- accepted
  Aquilaria sinensis (Lour.) Spreng. -- accepted
  Aquilaria subintegra Ding Hou -- accepted
  Aquilaria urdanetensis (Elmer) Hallier f. -- accepted
  Aquilaria yunnanensis S.C. Huang -- accepted
  Aquilegia flabellata Siebold & Zucc. -- accepted -- fan columbine
  Arabis hirsuta (L.) Scop. -- accepted -- hairy rockcress
  Archidendron F. Muell. -- accepted
  Archidendron jiringa (Jack) I.C. Nielsen -- accepted
  Ardisia crispa (Thunb.) A. DC. -- accepted
  Ardisia humilis Vahl -- accepted -- low shoebutton
  Areca ipot Becc. -- accepted
  Areca monostachya Mart. -- not accepted
  Arenaria ciliata L. -- accepted -- fringed sandwort
  Arenaria gothica Fr. -- accepted
  Arenaria montana L. -- accepted -- mountain sandwort
  Arenaria norvegica Gunnerus -- accepted
  Arenaria procera Spreng. -- accepted
  Arenaria procera ssp. procera Spreng. -- accepted
  Argusia gnaphalodes (L.) Heine -- not accepted -- sea rosemary
  Argyreia obtusifolia Lour. -- accepted
  Aristolochia rugosa Lam. -- accepted
  Armeria juncea Girard -- not accepted
  Artocarpus hirsutus Lam. -- accepted -- hirsute artocarpus
  Artocarpus mariannensis Trécul -- accepted
  Artocarpus odoratissimus Blanco -- accepted -- marang
  Artocarpus rigidus Blume -- accepted -- monkey Jack
  Artocarpus tamaran Becc. -- accepted
  Asarum naniflorum (H.L. Blomq.) Pfeifer -- not accepted
  Ascarina diffusa A.C. Sm. -- accepted
  Asplenium ceterach L. -- accepted
  Astragalus edulis Durieu ex Bunge -- accepted -- milkvetch
  Astragalus frigidus (L.) A. Gray -- accepted
  Astragalus gummifer Labill. -- accepted -- gum tragacanth milkvetch
  Astragalus luristanicus Bornm. -- not accepted
  Atriplex atacamensis Phil. -- accepted -- cachiyuyo
  Atriplex barclayana (Benth.) D. Dietr. -- accepted -- Barclay's saltbush
  Atriplex bunburyana F. Muell. -- accepted -- silver saltbush
  Atriplex calotheca (Rafn) Fr. -- accepted -- halberdleaf orach
  Atriplex cinerea Poir. -- accepted -- gray saltbush
  Atriplex coquimbana Phil. -- accepted
  Atriplex cordifolia J.M. Black -- accepted
  Atriplex cristata Humb. & Bonpl. ex Willd. -- accepted -- crested saltbush
  Atriplex farinosa Forssk. -- accepted
  Atriplex halimus L. -- accepted -- saltbush
  Atriplex lampa (Moq.) Gillies ex Small -- accepted -- South American saltbush
  Atriplex leptocarpa F. Muell. -- accepted -- slender-fruit saltbush
  Atriplex leucoclada Boiss. -- accepted
  Atriplex malvana Aellen & Sauvage -- accepted
  Atriplex paludosa R. Br. -- accepted -- marsh saltbush
  Atriplex portulacoides L. -- accepted
  Atriplex pseudocampanulata Aellen -- accepted
  Atriplex repanda Phil. -- accepted
  Atriplex rhagodioides F. Muell. -- accepted -- saltbush, silver saltbush
  Atriplex spongiosa F. Muell. -- accepted -- pop saltbush
  Atriplex undulata (Moq.) D. Dietr. -- accepted
  Atriplex verrucifera M. Bieb. -- accepted
  Atropa belladonna L. -- not accepted
  Averrhoa bilimbi L. -- accepted -- bilimbi
  Avonia (E. Mey. ex Fenzl) G.D. Rowley -- accepted
  Avonia quinaria ssp. alstonii (Schönland) G.D. Rowley -- accepted
  Avonia quinaria ssp. quinaria (E. Mey. ex Fenzl) G.D. Rowley -- accepted
  Baccaurea racemosa (Reinw.) Müll. Arg. -- accepted -- menteng
  Balanites aegyptiacus (L.) Delile -- accepted
  Balanites maughamii Sprague -- accepted -- manduro
  Banisteriopsis caapi (Spruce ex Griseb.) C.V. Morton -- accepted -- ayahuasca
  Banksia ashbyi Baker f. -- accepted -- Ashby's banksia
  Banksia ericifolia L. f. -- accepted -- heath-leaf banksia
  Banksia formosa (R. Br.) A.R. Mast & K.R. Thiele -- accepted
  Banksia marginata Cav. -- accepted -- silver banksia
  Banksia polycephala (Benth.) A.R. Mast & K.R. Thiele -- accepted
  Banksia spinulosa Sm. -- accepted -- hairpin banksia
  Barbeya Schweinf. -- accepted
  Barbeya oleoides Schweinf. -- accepted
  Barringtonia racemosa (L.) Spreng. -- accepted
  Barringtonia samoensis A. Gray -- accepted
  Batis argillicola P. Royen -- accepted
  Batocarpus H. Karst. -- accepted
  Batocarpus costaricensis Standl. & L.O. Williams -- accepted
  Bauhinia esculenta Burch. -- not accepted -- camel's foot
  Bauhinia fassoglensis Kotschy ex Schweinf. -- not accepted -- bauhinia
  Beccariophoenix Jum. & H. Perrier -- accepted
  Begonia fusca Liebm. -- accepted
  Begonia humilis Aiton -- accepted
  Berberis duclouxiana (Gagnep.) Laferr. -- accepted
  Berberis koreana Palib. -- accepted
  Berberis lomariifolia (Takeda) Laferr. -- accepted -- Chinese hollygrape
  Berberis X mentorensis L.M. Ames -- accepted -- Mentor's barberry
  Bertholletia excelsa Humb. & Bonpl. -- accepted -- Brazil-nut, brazilnut
  Berula angustifolia (L.) Mert. & W.D.J. Koch -- not accepted
  Beta atriplicifolia Rouy -- not accepted -- beet
  Beta lomatogona Fisch. & C.A. Mey. -- accepted -- beet
  Beta nana Boiss. & Heldr. -- accepted -- beet
  Beta patula Aiton -- accepted -- beet
  Beta trigyna Waldst. & Kit. -- accepted -- beet
  Beta trojana Pamukç. ex Aellen -- not accepted -- Trojan beet
  Beta vulgaris L. -- accepted -- common beet
  Beta vulgaris ssp. adanensis (A. Pamukç. ex Aellen) Ford-Lloyd & J.T. Williams -- accepted
  Betula maximowicziana Regel -- accepted -- monarch birch
  Betula X alpestris Fr. -- accepted -- birch
  Blutaparon portulacoides (A. St.-Hil.) Mears -- accepted
  Boehmeria densiflora Hook. & Arn. -- accepted
  Bolbitis hydrophylla (Copel.) Ching -- not accepted
  Bolbitis sinuata (C. Presl) Hennipman -- accepted
  Boronia megastigma Nees ex Bartl. -- accepted -- sweet boronia
  Boscia senegalensis (Pers.) Lam. -- accepted -- Senegal boscia
  Boswellia frereana Birdw. -- accepted -- elemi frankincense
  Boswellia papyrifera (Delile ex Caill.) Hochst. -- accepted -- elephant tree
  Boswellia sacra Flueck. -- accepted -- frankincense
  Boswellia serrata Roxb. ex Colebr. -- accepted -- Indian frankincense
  Bourreria succulenta var. canescens O.E. Schulz -- not accepted
  Brachychiton acerifolius (A. Cunn. ex G. Don) Macarthur -- accepted -- flame bottletree
  Brassica carinata A. Braun -- accepted -- Abyssinian mustard
  Brassica cretica Lam. -- accepted -- mustard
  Brassica rupestris Raf. -- accepted -- mustard
  Brassica ruvo L.H. Bailey -- accepted -- ruvo kale
  Brassica septiceps (L.H. Bailey) L.H. Bailey -- not accepted -- seventop turnip
  Bridelia insulana Hance -- accepted
  Brosimum alicastrum ssp. bolivarense (Pittier) C.C. Berg -- not accepted -- Bolivar brosimum
  Broussonetia kazinoki Siebold -- accepted
  Brugmansia sanguinea (Ruiz & Pav.) D. Don -- accepted -- red floripontio
  Bruguiera gymnorhiza (L.) Savigny -- accepted -- Burmese mangrove
  Brunfelsia chiricaspi Plowman -- accepted -- brunfelsia
  Brunfelsia grandiflora D. Don -- accepted -- largeflower brunfelsia
  Brunfelsia uniflora (Pohl) D. Don -- accepted -- manaca
  Brunonia R. Br. -- accepted
  Brunonia australis Sm. ex R. Br. -- accepted -- blue pincushion
  Bryophyllum Salisb. -- not accepted
  Bucida L. -- accepted
  Buddleja globosa Hope -- accepted -- orange-ball-tree
  Buddleja officinalis Maxim. -- accepted -- pole butterflybush
  Bulnesia arborea (Jacq.) Engl. -- accepted -- maracaibo lignumvitae
  Bulnesia sarmienti Lorentz ex Griseb. -- not accepted -- balsamo
  Bulnesia sarmientoi Lorentz ex Griseb. -- accepted -- balsamo
  Bupleurum ranunculoides L. -- accepted
  Buxus balearica Lam. -- accepted
  Buxus microphylla Siebold & Zucc. -- accepted -- littleleaf boxwood
  Byrsonima coccolobifolia Kunth -- accepted -- locustberry
  Cadaba farinosa Forssk. -- accepted
  Caesalpinia sappan L. -- accepted -- sappanwood
  Cajanus cajan (L.) Huth -- accepted
  Calceolaria tripartita Ruiz & Pav. -- accepted -- splitleaf slipperwort
  Callaeum macropterum (DC.) D.M. Johnson -- accepted -- aparigua, gallinita, guirote, hillyhock
  Calligonum aphyllum (Pall.) Gürke -- accepted
  Calligonum caput-medusae Schrenk -- accepted
  Calligonum leucocladum (Schrenk) Bunge -- accepted
  Calligonum microcarpum I.G. Borshch. -- accepted
  Calodendrum capense Thunb. -- accepted -- Cape-chestnut
  Calophaca wolgarica (L. f.) Fisch. ex DC. -- accepted
  Calophyllum calaba L. -- accepted
  Calophyllum soulattri Burm. f. -- accepted
  Calystegia soldanella (L.) Roem. & Schult. -- accepted -- beach morningglory, seashore false bindweed
  Camellia chrysantha (Hu) Tuyama -- not accepted
  Camellia petelotii (Merr.) Sealy -- accepted
  Camellia petelotii var. petelotii (Merr.) Sealy -- accepted
  Camellia reticulata Lindl. -- accepted -- to-tsubaki
  Campanula alliariifolia Willd. -- accepted
  Campanula americana L. -- accepted -- American bellflower
  Campanula baumgartenii Becker -- accepted
  Campanula baumgartenii ssp. baumgartenii Becker -- accepted
  Campanula bellidifolia Adam -- accepted
  Campanula carnica Schiede ex Mert. & W.D.J. Koch -- accepted -- bellflower
  Campanula garganica Ten. -- accepted -- Adriatic bellflower
  Campanula saxifraga M. Bieb. -- not accepted
  Camphorosma monspeliaca L. -- accepted
  Campnosperma brevipetiolata Volkens -- accepted
  Camptotheca acuminata Decne. -- accepted
  Canangium odoratum (Lam.) Baill. ex King -- not accepted
  Canarina abyssinica Engl. -- accepted
  Canarium indicum L. -- accepted -- Java almond
  Canarium ovatum Engl. -- accepted -- pili nut
  Canarium pimela K.D. Koenig -- accepted -- Chinese black olive
  Canarium schweinfurthii Engl. -- accepted -- Schweinfurth's olive
  Canavalia campylocarpa Piper -- accepted -- jeweled jackbean
  Canavalia plagiosperma Piper -- accepted -- obliqueseeded jackbean
  Cantua bicolor Lem. -- accepted
  Capparis corymbosa Lam. -- accepted -- corymbose caper
  Capparis cynophallophora var. badduca (L.) Wikstr. ex Griseb. -- not accepted
  Capparis spinosa L. -- accepted -- caper
  Capparis tomentosa Lam. -- accepted -- African caper
  Capsicum baccatum L. -- accepted -- locoto
  Capsicum baccatum var. baccatum L. -- accepted -- cayenne pepper, locoto
  Capsicum baccatum var. pendulum (Willd.) Eshbaugh -- accepted -- aji
  Capsicum chinense Jacq. -- accepted -- aji
  Capsicum pubescens Ruiz & Pav. -- accepted -- rocoto
  Caragana korshinskii Kom. -- accepted -- peashrub
  Caragana microphylla Lam. -- accepted -- littleleaf peashrub
  Carica monoica Desf. -- not accepted
  Carica pubescens (A. DC.) Solms -- not accepted -- mountain papaya
  Carica quercifolia (A. St.-Hil.) Hieron. -- not accepted -- oakleaf carica
  Caropsis verticillatoinundata (Thore) Rauschert -- accepted
  Carpinus betulus L. -- accepted -- European hornbeam
  Carum verticillatum (L.) W.D.J. Koch -- accepted
  Caryocar costaricense Donn. Sm. -- accepted
  Casimiroa edulis La Llave & Lex. -- accepted -- white sapote
  Casimiroa tetrameria Millsp. -- accepted -- matasano
  Cassia auriculata L. -- not accepted -- avaram
  Cassia roxburghii DC. -- accepted -- Roxburgh's cassia
  Cassia senna L. -- not accepted
  Castanopsis sclerophylla (Lindl. & Paxton) Schottky -- accepted
  Castela erecta Turpin -- accepted -- goatbush
  Castela texana (Torr. & A. Gray) Rose -- accepted
  Castilla elastica ssp. costaricana (Liebm.) C.C. Berg -- not accepted -- castilla
  Castilla ulei Warb. -- accepted -- caucho rubber
  Castilleja exserta ssp. exserta (A. Heller) T.I. Chuang & Heckard -- accepted -- exserted Indian paintbrush, owl clover
  Castilleja gleasonii Elmer -- not accepted -- Mount Gleason paintbrush
  Casuarina obesa Miq. -- accepted -- swamp she-oak, swamp-oak
  Ceanothus infesta Kunth -- not accepted
  Ceanothus X delileanus Spach -- accepted -- French hybrid ceanothus
  Ceanothus X pallidus Lindl. -- accepted
  Cedrela fissilis Vell. -- accepted
  Cedrela lilloi C. DC. -- accepted
  Ceiba acuminata (S. Watson) Rose -- not accepted -- pochote
  Ceiba caribaea (DC.) A. Chev. -- not accepted
  Ceiba insignis (Kunth) P.E. Gibbs & Semir -- accepted -- white silk floss tree
  Ceiba speciosa (A. St.-Hil.) Ravenna -- accepted -- silk-floss tree
  Celosia tomentosa Willd. -- not accepted
  Celtis africana Burm. f. -- accepted
  Celtis caucasica Willd. -- accepted -- Caucasian hackberry
  Celtis choseniana Nakai -- accepted
  Celtis jessoensis Koidz. -- accepted
  Celtis planchoniana K.I. Chr. -- accepted
  Celtis tala Gillies ex Planch. -- accepted
  Celtis tournefortii Lam. -- accepted -- Oriental hackberry
  Celtis yunnanensis C.K. Schneid. -- accepted
  Centaurium littorale (Turner) Gilmour -- accepted -- seaside centaury
  Centella erecta (L. f.) Fernald -- not accepted -- erect centella
  Centella villosa L. -- accepted
  Centrogenium Schltr. -- not accepted
  Cephalotus Labill. -- accepted
  Cephalotus follicularis Labill. -- accepted
  Cerastium biebersteinii DC. -- accepted -- boreal chickweed, snow-in-summer
  Ceratocephala Moench -- accepted -- butterwort, curveseed butterwort
  Ceriops tagal (Perr.) C.B. Rob. -- accepted
  Ceterach officinarum Willd. -- not accepted
  Chaenomeles X superba (Frahm) Rehder -- accepted -- quince
  Chaenorhinum calycinum (Banks & Sol.) P.H. Davis -- accepted
  Chaerophyllum aromaticum L. -- accepted
  Chamaecrista mimosoides (L.) Greene -- accepted -- chamaecrista
  Chamaecrista ramosa (Vogel) H.S. Irwin & Barneby -- accepted -- savannah sensitive pea
  Chamerion dodonaei (Vill.) Holub -- accepted
  Cheilocostus C.D. Specht -- accepted
  Cheilocostus speciosus (J. Koenig) C.D. Specht -- accepted -- cane-reed, crepe-ginger, wild ginger
  Chenopodium carinatum R. Br. -- not accepted
  Chenopodium carnosulum Moq. -- accepted -- ridged goosefoot
  Chenopodium gaudichaudianum (Moq.) Paul G. Wilson -- accepted
  Chenopodium pallidicaule Aellen -- accepted -- canihua
  Chenopodium quinoa Willd. -- accepted -- quinoa
  Chiranthodendron pentadactylon Larreat. -- accepted -- Mexican-hat-plant
  Chondrodendron tomentosum Ruiz & Pav. -- accepted -- pareira
  Chrysophyllum africanum A. DC. -- accepted
  Chrysophyllum delevoyi De Wild. -- not accepted -- African star apple
  Cibotium barometz (L.) J. Sm. -- accepted
  Cibotium regale Verschaff. & Lem. -- accepted
  Circaea lutetiana L. -- accepted -- broadleaf enchanter's nightshade
  Cistanche Hoffmans. & Link -- accepted
  Cistanche deserticola Ma -- accepted
  Citrus hystrix DC. -- accepted
  Citrus jambhiri Lush. -- accepted -- rough lemon
  Citrus macroptera Montrouz. -- accepted
  Citrus madurensis Lour. -- not accepted -- calamandarin, calamondin, Panama orange
  Citrus reticulata ssp. unshiu (Marcow.) D. Rivera, Obón, S. Ríos, Selma, F. Méndez, Verde & F. Cano -- not accepted -- Satsuma mandarin, Unshu orange
  Citrus tachibana (Makino) Tanaka -- accepted -- tachibana orange
  Citrus X tangelo J.W. Ingram & H.E. Moore -- accepted -- tangelo
  Clappertonia ficifolia (Willd.) Decne. -- accepted -- bolo bolo
  Clappertonia polyandra (K. Schum. ex Sprague) Bech. -- accepted
  Clausena anisata (Willd.) Hook. f. -- accepted
  Clausena lansium (Lour.) Skeels -- accepted -- wampi
  Clematis apiifolia DC. -- accepted
  Clematis armandii Franch. -- accepted
  Clematis brachiata Thunb. -- accepted -- traveler's-joy
  Clematis cirrhosa L. -- accepted
  Clematis flammula L. -- accepted -- fragrant clematis
  Clematis fusca Turcz. -- accepted
  Clematis henryi Oliv. -- accepted
  Clematis heracleifolia DC. -- accepted -- hyacinth-flower clematis
  Clematis hirsuta Guill. & Perr. -- accepted
  Clematis koreana Kom. -- accepted
  Clematis macropetala Ledeb. -- accepted
  Clematis microphylla DC. -- accepted -- headachevine, small-leaf clematis
  Clematis microphylla var. leptophylla F. Muell. ex Benth. -- accepted
  Clematis montana Buch.-Ham. ex DC. -- accepted
  Clematis songarica Bunge -- accepted
  Clematis welwitschii Hiern ex Kuntze -- accepted
  Cleome arborea hort. -- not accepted
  Cleome hirta (Klotzsch) Oliv. -- accepted
  Cliftonia monophylla (Lam.) Britton ex Sarg. -- accepted -- black titi, buckwheat tree
  Cliftonia nitida C.F. Gaertn. -- not accepted
  Cnidoscolus chayamansa McVaugh -- accepted -- chaya
  Cochlearia officinalis L. -- accepted -- common scurvygrass, spoonwort
  Cochlospermum gossypium (L.) DC. -- not accepted
  Codariocalyx Hassk. -- accepted -- tick trefoil
  Codariocalyx gyroides (Roxb. ex Link) Hassk. -- not accepted -- false tick trefoil
  Codariocalyx motorius (Houtt.) H. Ohashi -- accepted
  Cola anomala K. Schum. -- accepted -- anomalous cola
  Cola pachycarpa K. Schum. -- accepted -- cola
  Cola verticillata (Thonn.) Stapf ex A. Chev. -- accepted -- cola
  Coldenia L. -- accepted
  Colletia spinosissima J.F. Gmel. -- accepted -- rosea
  Colubrina excelsa Fenzl -- not accepted
  Colutea istria Mill. -- accepted -- bladder-senna
  Combretum hereroense Schinz -- accepted -- russet bushwillow
  Combretum imberbe Wawra -- accepted -- leadwood
  Combretum indicum (L.) DeFilipps -- accepted
  Combretum microphyllum Klotzsch -- accepted
  Combretum paniculatum Vent. -- accepted -- fire vine
  Commelina tuberosa L. -- accepted -- commelina
  Commicarpus Standley -- accepted
  Commiphora gileadensis (L.) C. Chr. -- accepted
  Commiphora habessinica (O. Berg) Engl. -- accepted -- Abyssinian myrrh
  Condalia velutina I.M. Johnst. -- accepted
  Conospermum Sm. -- accepted
  Convolvulus pilosellifolius Desr. -- accepted -- soft bindweed
  Convolvulus scammonia L. -- accepted -- scammony
  Convolvulus trifidus Kunth -- not accepted
  Convolvulus uniflorus Burm. f. -- not accepted
  Copaifera multijuga Hayne -- accepted
  Corchorus capsularis L. -- accepted -- jute
  Corchorus orinocensis Kunth -- accepted -- red jute
  Corchorus trilocularis L. -- accepted -- threelocule corchorus
  Cordia schomburgkii DC. -- accepted
  Cordia sinensis Lam. -- accepted
  Cordia tobagensis Urb. -- not accepted
  Cordia tobagensis var. broadwayi Urb. -- not accepted
  Cornus amomum ssp. obliqua (Raf.) J.S. Wilson -- accepted -- silky dogwood
  Cornus capitata Wall. -- accepted -- Bentham's cornel
  Cornus controversa Hemsl. ex Prain -- accepted -- giant dogwood
  Cornus macrophylla Wall. -- accepted
  Cornus officinalis Siebold & Zucc. -- accepted -- Asiatic dogwood, Japanese cornel, Japanese cornelian-cherry
  Cornus quinquinervis Franch. -- accepted
  Cornus sanguinea L. -- accepted -- bloodtwig dogwood, common dogwood, dogberry, pegwood
  Corydalis capnoides (L.) Pers. -- accepted -- cream fumewort
  Corylus colurna L. -- accepted -- Turkish hazelnut
  Corylus ferox Wall. -- accepted -- Himalayan hazelnut
  Corylus ferox var. ferox Wall. -- accepted -- Himalayan hazelnut
  Corylus ferox var. thibetica (Batalin) Franch. -- not accepted -- Tibetan hazelnut
  Corylus ferox var. tibetica (Batalin) Franch. -- accepted -- Tibetan hazelnut
  Corylus thibetica Batalin -- not accepted
  Cotoneaster allochrous Pojark. -- accepted
  Cotoneaster bacillaris Wall. ex Lindl. -- accepted
  Cotoneaster buxifolius f. vellaeus Franch. -- not accepted
  Cotoneaster dielsianus var. dielsianus E. Pritz. ex Diels -- accepted
  Cotoneaster glaucophyllus var. meiophyllus W.W. Sm. -- accepted
  Cotoneaster hissaricus Pojark. -- accepted
  Cotoneaster hupehensis Rehder & E.H. Wilson -- not accepted -- Hupeh cotoneaster
  Cotoneaster ignavus E.L. Wolf -- accepted
  Cotoneaster insignis Pojark. -- accepted
  Cotoneaster karatavicus Pojark. -- accepted
  Cotoneaster nebrodensis (Guss.) K. Koch -- accepted
  Cotoneaster nitidus Jacq. -- accepted
  Cotoneaster nummularius Fisch. & C.A. Mey. -- accepted
  Cotoneaster obovatus Wall. ex Dunn -- accepted
  Cotoneaster racemiflorus (Desf.) K. Koch -- accepted
  Cotoneaster racemiflorus var. royleanus Dippel -- accepted
  Cotoneaster roseus Edgew. -- accepted
  Cotoneaster salicifolius var. rugosus (E. Pritz.) Rehder & E.H. Wilson -- accepted
  Cotoneaster saxatilis Pojark. -- accepted
  Cotoneaster sikkimensis hort. ex Wien. -- accepted
  Cotoneaster silvestrii Pamp. -- accepted
  Cotoneaster splendens Flinck & B. Hylmö -- not accepted
  Cotoneaster X watereri Exell -- accepted -- Waterer's cotoneaster
  Cotoneaster zeravschanicus Pojark. -- accepted
  Cottsia Dubard & Dop -- accepted
  Cottsia gracilis (A. Gray) W.R. Anderson & C. Davis -- accepted
  Cotyledon barbeyi Schweinf. ex Baker -- accepted
  Crambe abyssinica Hochst. ex R.E. Fries -- not accepted -- crambe
  Crambe hispanica L. -- accepted -- Hispanic crambe
  Crambe hispanica ssp. abyssinica (Hochst. ex R.E. Fr.) Prina -- accepted
  Crassula perfoliata L. -- accepted
  Crassula perfoliata var. minor (Haw.) G.D. Rowley -- accepted
  Crataegus ambigua C.A. Mey. ex A.K. Becker -- accepted
  Crataegus azarolus L. -- accepted -- azarole, Mediterranean-medlar
  Crataegus chlorosarca var. atrocarpa (E.L. Wolf) Cinovskis -- accepted
  Crataegus cuneata Siebold & Zucc. -- accepted -- Chinese hawthorn, Nippon hawthorn
  Crataegus mexicana DC. -- accepted -- manzanita tejocotera, Mexican hawthorn, tejocote
  Crataegus nigra Waldst. & Kit. -- accepted
  Crataegus orientalis Pall. ex M. Bieb. -- accepted
  Crataegus pentagyna Waldst. & Kit. ex Willd. -- accepted
  Crataegus rhipidophylla Gand. -- accepted
  Crataegus rhipidophylla var. lindmanii (Hrabetová) K.I. Chr. -- accepted
  Crataegus tanacetifolia (Poir.) Pers. -- accepted
  Crataegus X grignonensis Mouill. -- accepted
  Crataegus X lauta Sarg. (pro sp.) -- accepted
  Crataegus X lavallei Hérincq ex Lavallée -- accepted
  Crataegus X mordenensis Boom -- accepted
  Craterostigma plantagineum Hochst. -- accepted -- blue gem
  Crateva religiosa G. Forst. -- accepted -- sacred garlic pear
  Crateva tapia L. -- accepted
  Crinum asiaticum L. -- accepted -- poisonbulb
  Crotalaria alata Buch.-Ham. ex D. Don -- accepted -- rattlebox
  Crotalaria breviflora DC. -- accepted -- shortflower rattlebox
  Crotalaria mysorensis Roth -- accepted -- rattlebox
  Crotalaria paulina Schrank -- accepted -- rattlebox
  Crotalaria vitellina Ker Gawl. -- accepted -- rattlebox
  Croton eluteria (L.) W. Wright -- accepted
  Croton megalobotrys Müll. Arg. -- accepted -- large fever berry
  Croton tiglium L. -- accepted -- purging croton
  Cryptantha jamesii (Torr.) Payson -- not accepted
  Cryptocarya lauriflora (Blanco) Merr. -- accepted
  Cryptotaenia japonica Hassk. -- accepted -- Japanese honewort
  Cucumis ficifolius A. Rich. -- accepted -- cucumis
  Cucumis prophetarum L. -- accepted -- cucumis
  Cucurbita argyrosperma C. Huber -- accepted
  Cucurbita maxima ssp. andreana (Naudin) Filov -- accepted -- winter squash
  Cucurbita maxima var. maxima Duchesne -- not accepted -- pumpkin
  Cucurbita mixta Pang. -- not accepted -- pumpkin
  Curcuma caulina J. Graham -- accepted
  Cuscuta pentagona var. pentagona Engelm. -- not accepted -- bush-clover dodder, field dodder, fiveangle dodder, fiveangled dodder
  Cyamopsis tetragonoloba (L.) Taub. -- accepted -- Calcutta-lucerne, cluster-bean, guar, Siam-bean
  Cyathea araneosa Maxon -- not accepted
  Cyathea bipinnatifida (Baker) Domin -- accepted
  Cyathea elegans Heward -- not accepted
  Cyathea grevilleana Mart. -- accepted
  Cyathea spectabilis (Kunze) Domin -- accepted
  Cyathea woodwardioides Kaulf. -- accepted
  Cyathea X dryopteroides Maxon -- accepted -- elfin tree fern
  Cyclamen alpinum hort. Damman ex Sprenger -- accepted
  Cyclamen coum ssp. elegans (Boiss. & Buhse) Grey-Wilson -- not accepted
  Cyclamen cyprium Kotschy -- accepted
  Cyclamen elegans Boiss. & Buhse -- accepted
  Cyclamen graecum ssp. anatolicum Ietsw. -- accepted
  Cyclamen graecum ssp. graecum Link -- accepted
  Cyclamen graecum ssp. mindleri (Heldr.) A.P. Davis & Govaerts -- not accepted
  Cyclamen hederifolium var. confusum Grey-Wilson -- not accepted
  Cyclamen hederifolium var. hederifolium Aiton -- not accepted
  Cyclamen parviflorum var. parviflorum Pobed. -- not accepted
  Cyclamen parviflorum var. subalpinum Grey-Wilson -- not accepted
  Cyclamen peloponnesiacum (Grey-Wilson) Kit Tan -- accepted
  Cyclamen peloponnesiacum ssp. peloponnesiacum (Grey-Wilson) Kit Tan -- accepted
  Cyclamen peloponnesiacum ssp. rhodense (Meikle) Kit Tan -- accepted
  Cyclamen peloponnesiacum ssp. vividum (Grey-Wilson) Kit Tan -- accepted
  Cyclamen persicum Mill. -- accepted -- florist's cyclamen
  Cyclamen persicum var. autumnale Grey-Wilson -- accepted
  Cyclamen persicum var. persicum Mill. -- accepted
  Cyclamen pseudibericum Hildebr. -- accepted
  Cyclamen purpurascens Mill. -- accepted -- cyclamen
  Cyclamen repandum Sm. -- accepted
  Cyclamen repandum ssp. peloponnesiacum Grey-Wilson -- not accepted
  Cyclamen repandum ssp. rhodense (Meikle) Grey-Wilson -- not accepted
  Cyclamen repandum var. vividum (Grey-Wilson) Grey-Wilson -- not accepted
  Cyclamen somalense Thulin & Warfa -- accepted
  Cyclamen trochopteranthum O. Schwarz -- not accepted
  Cyclamen X atkinsii T. Moore -- accepted
  Cynoglottis (Gusul.) Vural & Kit Tan -- accepted
  Cynoglottis barrelieri (All.) Vural & Kit Tan -- accepted
  Cynometra ramiflora L. -- accepted
  Cyphomandra betacea (Cav.) Sendtn. -- not accepted -- tree tomato
  Cyphomandra hartwegii (Miers) Dunal -- not accepted -- Hartweg's cyphomandra
  Cytisus stenopetalus (Webb & Berthel.) Masf. -- not accepted
  Dacryodes edulis (G. Don) H.J. Lam -- accepted -- eben tree
  Dalbergia candenatensis (Dennst.) Prain -- accepted
  Dalbergia latifolia Roxb. -- accepted -- Indian rosewood
  Dalbergia louvelii R. Vig -- accepted
  Dalbergia monticola Bosser & R. Rabev. -- accepted
  Dalbergia nigra (Vell.) Allemao ex Benth. -- accepted
  Dalbergia purpurascens Baill. -- accepted
  Dalbergia retusa Hemsl. -- accepted
  Dalbergia stevensonii Standl. -- accepted
  Dalbergia tucurensis Donn. Sm. -- accepted
  Daniellia ogea (Harms) Rolfe ex Holland -- accepted -- gum copal tree
  Daniellia oliveri (Rolfe) Hutch. & Dalziel -- accepted -- African copaiba balsam tree
  Daniellia thurifera Benn. -- accepted -- Niger copal tree
  Daphne cneorum L. -- accepted
  Datisca cannabina L. -- accepted -- akalbir
  Datura inermis Juss. ex Jacq. -- not accepted -- smooth thorn-apple
  Datura kymatocarpa A.S. Barclay -- accepted -- datura
  Datura leichhardtii F. Muell. ex Benth. -- accepted -- Leichhardt's datura
  Datura meteloides auct. non DC. ex Dunal. -- not accepted
  Datura meteloides DC. ex Dunal -- not accepted
  Datura pruinosa Greenm. -- not accepted -- datura
  Datura reburra A.S. Barclay -- accepted -- datura
  Deeringia amaranthoides (Lam.) Merr. -- accepted
  Delphinium formosum Boiss. & A. Huet. -- accepted -- hardy larkspur
  Delphinium laxiflorum DC. -- accepted
  Delphinium semibarbartum Bien. ex Boiss. -- accepted
  Delphinium zalil Aitch. & Hemsl. -- not accepted -- zalil
  Derris elliptica Benth. -- not accepted -- oiltree
  Derris ferruginea (Roxb.) Benth. -- accepted
  Derris trifoliata Lour. -- accepted -- threeleaf derris
  Descurainia pinnata ssp. halictorum (Cockerell) Detling -- accepted -- western tansy mustard, western tansymustard
  Desmodium angustifolium (Kunth) DC. -- accepted -- narrowleaf ticktrefoil
  Desmodium incanum var. angustifolium (Kunth) Griseb. -- not accepted -- zarzabacoa comun
  Desmodium sericophyllum Schltdl. -- accepted -- ticktrefoil
  Dialium guianense (Aubl.) Sandwith -- accepted
  Dialium guineense Willd. -- accepted -- velvet tamarind
  Dianthus caryophyllus L. -- accepted -- carnation
  Dianthus fragrans Adams -- accepted -- fragrant pink
  Dianthus sternbergii Sieber ex Capelli -- accepted
  Dianthus superbus L. -- accepted -- fringed pink
  Dichondra repens J.R. Forst. & G. Forst. -- accepted
  Dicksonia antarctica Labill. -- accepted -- Australian treefern
  Dicksonia berteroana Brack. -- accepted
  Dicksonia externa C. Chr. & Skottsb. -- accepted
  Dicksonia sellowiana Hook. -- accepted
  Dicksonia squarrosa (G. Forst.) Sw. -- accepted -- hard treefern
  Diellia erecta f. pumila (Brack.) W.H. Wagner -- not accepted
  Diellia pumila Brack. -- not accepted
  Digitalis ferruginea L. -- accepted -- rusty foxglove
  Digitalis mariana Boiss. -- accepted
  Digitalis mariana ssp. heywoodii (P. Silva & M. Silva) Hinz -- accepted
  Digitalis purpurea ssp. amandiana (Samp.) Hinz -- accepted
  Dioscorea glauca Muhl. ex L.C. Beck -- not accepted
  Dioscoreophyllum cumminsii (Stapf) Diels -- accepted -- serendipity berry
  Diospyros cathayensis Steward -- accepted
  Diospyros kaki Thunb. -- accepted -- Chinese persimmon, Japanese persimmon
  Diospyros lotus L. -- accepted -- date plum
  Diospyros lycioides Desf. -- accepted -- red star apple
  Diospyros mespiliformis Hochst. ex A. DC. -- accepted -- ebony diospyros
  Diospyros natalensis (Harv.) Brenan -- accepted
  Diploknema Pierre -- accepted
  Diploknema butyracea (Roxb.) H.J. Lam -- accepted
  Diplopterygium glaucum (Thunb. ex Houtt.) Nakai -- accepted
  Dipteryx odorata (Aubl.) Willd. -- accepted -- tonka bean
  Dipteryx oleifera Benth. -- accepted
  Dipteryx panamensis (Pittier) Record & Mell -- not accepted
  Dodonaea lanceolata F. Muell. -- accepted
  Dodonaea lobulata F. Muell. -- accepted -- lobe-leaf hopbush
  Dodonaea microzyga F. Muell. -- accepted
  Dodonaea stenozyga F. Muell. -- accepted -- desert hopbush
  Dodonaea viscosa ssp. angustifolia (L. f.) J.G. West -- accepted
  Dodonaea viscosa ssp. angustissima (DC.) J.G. West -- accepted -- narrow-leaf hopbush
  Dodonaea viscosa ssp. cuneata (Sm.) J.G. West -- accepted -- wedge-leaf hopbush
  Dombeya burgessiae Gerrard ex Harv. & Sonder -- accepted
  Dombeya wallichii (Lindl.) Baill. -- accepted
  Dovyalis abyssinica (A. Rich.) Warb. -- accepted -- koshum
  Dovyalis caffra (Hook. f. & Harv.) Warb. -- accepted -- kei apple
  Dracontomelon dao (Blanco) Merr. & Rolfe -- accepted -- Argus pheasant tree
  Drimia Jacq. ex Willd. -- accepted
  Drimys winteri J.R. Forst. & G. Forst. -- accepted -- Winter's bark
  Dryandra formosa R. Br. -- not accepted
  Dryandra polycephala Benth. -- not accepted
  Drymaria arenarioides Humb. & Bonpl. ex Schult. -- accepted -- alfombrilla, lightning weed, sandwort drymary
  Dryobalanops aromatica C.F. Gaertn. -- accepted -- Borneo camphor
  Duboisia hopwoodii (F. Muell.) F. Muell. -- accepted -- pituri
  Duboisia leichhardtii (F. Muell.) F. Muell. -- accepted -- Leichhardt's duboisia
  Duboisia myoporoides R. Br. -- accepted -- corkwood tree
  Dudleya albiflora Rose -- accepted
  Dudleya arizonica Rose -- accepted -- Arizona dudleya
  Dudleya brittonii D.A. Johans. -- accepted
  Duguetia A. St.-Hil. -- accepted
  Dypsis decaryi (Jum.) Beentje & J. Dransf. -- accepted
  Echium pininana Webb & Berthel. -- accepted -- pine echium
  Elaeagnus orientalis L. -- not accepted -- Oriental olive
  Elaphrium odoratum (Brandegee) Rose -- not accepted
  Embothrium coccineum J.R. Forst. & G. Forst. -- accepted -- Chilean firebush
  Encephalartos caffer (Thunb.) Lehm. -- accepted
  Enicostema axillare (Lam.) A. Raynal -- accepted -- axil enicostema
  Enicostema verticillatum (L.) Engl. ex Gilg -- accepted -- whitehead
  Entada abyssinica Steud. ex A. Rich. -- accepted -- Abyssinia entada
  Entada gigas (L.) Fawc. & Rendle -- accepted -- nicker bean
  Entandrophragma delevoyi De Wild. -- accepted
  Entelea arborescens R. Br. -- accepted
  Eremocitrus glauca (Lindl.) Swingle -- accepted -- Australian desert lime
  Eremogone gypsophiloides (L.) Fenzl -- accepted
  Erinus alpinus L. -- accepted -- alpine balsam, liver balsam
  Eriogonum molle Greene -- accepted
  Erucastrum nasturtiifolium (Poir.) O.E. Schulz -- accepted -- watercress dogmustard
  Eryngium creticum Lam. -- accepted -- eryngo
  Erysimum X marshallii (Henfr.) Bois -- accepted -- Siberian wallflower
  Erythrina abyssinica Lam. ex DC. -- accepted
  Erythrina subumbrans (Hassk.) Merr. -- accepted
  Erythrina variegata var. orientalis (L.) Merr. -- not accepted -- tiger's claw
  Erythrophleum suaveolens (Guill. & Perr.) Brenan -- accepted -- sasswood
  Erythroxylum coca Lam. -- accepted -- coca
  Erythroxylum coca var. coca Lam. -- accepted -- coca
  Erythroxylum coca var. ipadu Plowman -- accepted -- Amazonian coca
  Erythroxylum novogranatense (D. Morris) Hieron. -- accepted -- Colombian coca
  Erythroxylum novogranatense var. novogranatense (D. Morris) Hieron. -- accepted -- Colombian coca
  Erythroxylum novogranatense var. truxillense (Rusby) Plowman -- accepted -- Trujillo coca
  Eschscholzia palmeri Rose -- accepted
  Eucalyptus acacioides A. Cunn. ex Maiden -- not accepted
  Eucalyptus parvifolia Cambage -- not accepted
  Eucnide aurea (A. Gray) H.J. Thomps. & W.R. Ernst -- accepted
  Eucnide grandiflora (Groenl.) Rose -- accepted
  Eucryphia cordifolia Cav. -- accepted -- ulmo
  Eugenia brasiliensis Lam. -- accepted -- grumichama
  Euphorbia candelabrum Trémaux ex Kotschy -- accepted
  Euphorbia cap-saintemariensis Rauh -- not accepted
  Euphorbia epithymoides L. -- accepted -- cushion spurge
  Euphorbia esula ssp. tommasiniana (Bertol.) Kuzmanov -- accepted
  Euphorbia fulgens Karw. ex Klotzsch -- accepted -- scarlet-plume
  Euphorbia lancifolia Schltdl. -- accepted -- ixbut
  Euphorbia palustris L. -- accepted -- marsh spurge
  Euphorbia resinifera O. Berg -- accepted -- Euphorbe ŕ résine, resin spurge
  Euphrasia officinalis L. -- accepted
  Euphrasia rostkoviana Hayne -- not accepted -- eyebright
  Eusideroxylon zwageri Teijsm. & Binn. -- accepted
  Eutrema japonicum (Miq.) Koidz. -- accepted -- wasabi
  Eutrema wasabi (Siebold) Maxim. -- not accepted -- wasabi
  Fabiana imbricata Ruiz & Pav. -- accepted -- pichi pichi
  Fagraea berteroana A. Gray ex Benth. -- accepted
  Fauria Franch. -- not accepted
  Fauria crista-galli (Menzies ex Hook.) Makino -- not accepted -- deercabbage
  Feea Bory -- not accepted
  Feea osmundoides (DC. ex Poir.) Copel. -- not accepted
  Feea polypodina Bory -- not accepted
  Ferula assa-foetida L. -- accepted -- asafetida, asafoetida
  Ferula gummosa Boiss. -- accepted -- galbanum
  Ferula narthex Boiss. -- accepted -- ferula
  Fibraurea tinctoria Lour. -- accepted
  Ficus auriculata Lour. -- accepted -- Roxburgh fig
  Ficus broadwayi Urb. -- not accepted
  Ficus henneana Miq. -- accepted
  Ficus macrophylla Desf. ex Pers. -- accepted
  Ficus natalensis Hochst. -- accepted
  Ficus nymphaeifolia Mill. -- accepted
  Ficus palmata Forssk. -- accepted -- Punjab fig
  Ficus pertusa L. f. -- accepted
  Ficus platypoda (Miq.) A. Cunn. ex Miq. -- accepted
  Ficus prolixa G. Forst. -- accepted -- fig
  Ficus saffordii Merr. -- accepted
  Ficus superba Miq. -- accepted -- sea fig
  Ficus sycomorus L. -- accepted -- sycamore fig
  Ficus thonningii Blume -- accepted -- Chinese banyan
  Ficus tinctoria G. Forst. -- accepted -- fig
  Ficus triangularis Warb. -- not accepted
  Ficus ulmifolia Lam. -- accepted
  Ficus urbaniana Warb. -- not accepted
  Flacourtia jangomas (Lour.) Raeusch. -- accepted -- Indian plum
  Flacourtia rukam Zoll. & Moritzi -- accepted -- rukam
  Flueggea flexuosa Müll. Arg. -- accepted -- poumuli
  Flueggea tinctoria (L.) G.L. Webster -- accepted -- tamujo
  Flueggea virosa (Roxb. ex Willd.) Royle -- accepted -- common bushweed
  Fortunella hindsii (Champ. ex Benth.) Swingle -- accepted -- Hong Kong kumquat
  Fortunella margarita (Lour.) Swingle -- accepted -- oval kumquat
  Fortunella X crassifolia Swingle -- accepted -- Meiwa kumquat
  Fuchsia arborescens Sims -- accepted -- aretillo
  Galphimia glauca Cav. -- accepted
  Galvezia Dombey ex Juss. -- accepted
  Garcinia hanburyi Hook. f. -- accepted -- Hanbury's garcinia
  Garcinia humilis (Vahl) C.D. Adams -- accepted
  Garcinia indica (Thouars) Choisy -- accepted -- garcinia
  Garcinia kola Heckel -- accepted -- garcinia
  Garcinia livingstonei T. Anderson -- accepted -- Livingstone's garcinia
  Garrya fadyenii Hook. -- accepted
  Geleznowia Turcz. -- accepted
  Gentiana acaulis L. -- accepted -- gentian
  Gentiana lutea L. -- accepted -- yellow gentian
  Gentiana verna L. -- accepted -- spring gentian
  Geranium maderense Yeo -- accepted -- Madiera cranesbill
  Geranium traversii Hook. f. -- accepted -- cranesbill
  Gerardia Benth. -- not accepted
  Gleichenia glauca (Thunb. ex Houtt.) Hook. -- not accepted
  Gluta renghas L. -- accepted -- rengas
  Gluta usitata (Wall.) Ding Hou -- accepted
  Glycine tabacina (Labill.) Benth. -- accepted
  Glycine tomentella Hayata -- accepted
  Gomphrena celosioides Mart. -- accepted
  Gonystylus Teijsm. & Binn. -- accepted
  Gonystylus acuminatus Airy Shaw -- accepted
  Gonystylus aerolatus Domke ex Airy Shaw -- accepted
  Gonystylus affinis Radlk. -- accepted
  Gonystylus augescens Ridl. -- accepted
  Gonystylus bancanus (Miq.) Kurz -- accepted
  Gonystylus borneensis (Tiegh.) Gilg -- accepted
  Gonystylus brunnescens Airy Shaw -- accepted
  Gonystylus calophylloides Airy Shaw -- accepted
  Gonystylus calophyllus Gilg -- accepted
  Gonystylus confusus Airy Shaw -- accepted
  Gonystylus consanguineus Airy Shaw -- accepted
  Gonystylus costalis Airy Shaw -- accepted
  Gonystylus decipiens Airy Shaw -- accepted
  Gonystylus eximius Airy Shaw -- accepted
  Gonystylus forbesii Gilg -- accepted
  Gonystylus glaucescens Airy Shaw -- accepted
  Gonystylus keithii Airy Shaw -- accepted
  Gonystylus lucidulus Airy Shaw -- accepted
  Gonystylus macrophyllus (Miq.) Airy Shaw -- accepted
  Gonystylus maingayi Hook. f. -- accepted
  Gonystylus micranthus Airy Shaw -- accepted
  Gonystylus nervosus Airy Shaw -- accepted
  Gonystylus nobilis Airy Shaw -- accepted
  Gonystylus othmanii Tawan -- accepted
  Gonystylus pendulus Airy Shaw -- accepted
  Gonystylus philippinensis Elmer -- not accepted
  Gonystylus reticulatus Merr. -- accepted
  Gonystylus spectabilis Airy Shaw -- accepted
  Gonystylus stenosepalus Airy Shaw -- accepted
  Gonystylus velutinus Airy Shaw -- accepted
  Gonystylus xylocarpus Airy Shaw -- accepted
  Gossypium arboreum L. -- accepted -- tree cotton
  Gossypium herbaceum L. -- accepted -- Levant cotton
  Gossypium sturtianum J.H. Willis -- accepted -- Sturt's desert rose
  Grammitis asplenifolia (L.) Proctor -- not accepted
  Gratiola amphiantha D. Estes & R.L. Small -- accepted -- little amphianthus
  Grevillea crithmifolia R. Br. -- accepted
  Grevillea hilliana F. Muell. -- accepted
  Grevillea leucopteris Meisn. -- accepted
  Grevillea paniculata Meisn. -- accepted
  Grewia asiatica L. -- accepted -- phalsa
  Grewia avellana Hiern -- accepted
  Grewia flava DC. -- accepted
  Grewia flavescens Juss. -- accepted
  Grewia hexamita Burret -- accepted
  Grewia hornbyi Wild -- accepted
  Grewia occidentalis L. -- accepted -- crossberry
  Grewia pachycalyx K. Schum. -- accepted
  Grewia retinervis Burret -- accepted
  Grewia schinzii K. Schum. -- accepted
  Grewia stolzii Ulbr. -- accepted
  Grewia sulcata Mast. -- accepted
  Grewia villosa Willd. -- accepted
  Greyia radlkoferi Szyszyl. -- accepted -- Natal bottlebrush
  Guaiacum coulteri A. Gray -- accepted
  Guaiacum guatemalense Planch. ex Rydb. -- not accepted
  Gunnera manicata Linden ex Delchev. -- accepted -- giant rhubarb
  Gypsophila acutifolia Steven ex Spreng. -- accepted -- sharpleaf baby's-breath, sharpleaf babysbreath
  Gypsophila arrostii Guss. -- accepted -- Arrost's baby's-breath, Arrost's babysbreath
  Gypsophila pacifica Kom. -- accepted
  Gypsophila perfoliata L. -- accepted -- perfoliate baby's-breath, perfoliate babysbreath
  Gyrinops Gaertn. -- accepted
  Gyrinops caudata (Gilg) Domke -- accepted
  Gyrinops decipiens Ding Hou -- accepted
  Gyrinops ledermanii Domke -- accepted
  Gyrinops moluccana (Miq.) Baill. -- accepted
  Gyrinops podocarpus (Gilg) Domke -- accepted
  Gyrinops salicifolia Ridl. -- accepted
  Gyrinops versteegii (Gilg) Domke -- accepted
  Gyrinops walla Gaertn. -- accepted
  Hakea rostrata F. Muell. ex Meisn. -- accepted -- beaked pincushion tree
  Halimione Aellen -- accepted
  Halocnemum strobilaceum (Pall.) M. Bieb. -- accepted
  Hebe venustula (Colenso) Cockayne -- accepted
  Hedychium philippinense K. Schum. -- accepted
  Hedysarum arcticum B. Fedtsch. -- accepted
  Hedysarum biebersteinii Chrtková -- accepted
  Hedysarum candidum M. Bieb. -- accepted
  Hedysarum coronarium L. -- accepted -- sulla
  Hedysarum cyprium Boiss. -- accepted
  Hedysarum flexuosum L. -- accepted
  Hedysarum fruticosum Pall. -- accepted
  Hedysarum humile L. -- accepted
  Hedysarum multijugum Maxim. -- accepted
  Hedysarum scoparium Fisch. & C.A. Mey. -- accepted -- sweetvetch
  Hedysarum spinosissimum L. -- accepted
  Hedysarum tauricum Pall. ex Willd. -- accepted
  Hedysarum varium Willd. -- accepted
  Hedysarum vicioides Turcz. -- accepted
  Heliocarpus americanus L. -- accepted
  Heliotropium arguzioides Kar. & Kir. -- accepted
  Helleborus niger L. -- accepted -- black hellebore, Christmas-rose
  Helosis cayennensis (Sw.) Spreng. -- accepted
  Hemichaena fruticosa Benth. -- accepted
  Heracleum sphondylium ssp. montanum (Schleich. ex Gaudin) Briq. -- accepted -- common cowparsnip, cow parsnip, cowparsnip
  Heteropterys syringifolia Griseb. -- accepted
  Hevea benthamiana Müll. Arg. -- accepted -- Bentham's hevea
  Hevea brasiliensis (Willd. ex A. Juss.) Müll. Arg. -- accepted -- rubber tree
  Hibiscus lunariifolius Willd. -- accepted -- hibiscus
  Hiptage benghalensis (L.) Kurz -- accepted -- hiptage
  Hoheria populnea A. Cunn. -- accepted -- lacebark
  Homalanthus nutans (G. Forst.) Guill. -- accepted
  Homalanthus populifolius Graham -- accepted -- bleeding-heart, Queensland poplar
  Homalocladium platycladum (F. Muell.) L.H. Bailey -- accepted -- centipede plant, ribbonbush
  Hopea micrantha Hook. f. -- accepted -- hopea
  Huperzia Bernh. -- accepted -- clubmoss
  Huperzia hippuridea (Christ) Holub -- accepted
  Huperzia montana (Underw. & F.E. Lloyd) Holub -- accepted
  Huperzia phlegmaria (L.) Rothm. -- accepted
  Huperzia pithyoides (Schltdl. & Cham.) Holub -- accepted
  Hydnocarpus anthelminthicus Pierre ex Laness. -- accepted
  Hydnocarpus kurzii (King) Warb. -- accepted -- chaulmoogra
  Hydrangea macrophylla (Thunb.) Ser. -- accepted -- French hydrangea
  Hylotelephium cauticola (Praeger) H. Ohba -- accepted
  Hylotelephium sieboldii (Sweet ex Hook.) H. Ohba -- accepted
  Hymenaea verrucosa Gaertn. -- accepted -- East African copal
  Hymenophyllum sericeum (Sw.) Sw. -- accepted
  Hymenophyllum tunbridgense (L.) Sm. -- not accepted
  Hyoscyamus muticus L. -- accepted -- henbane
  Hypericum tetrapterum Fr. -- accepted -- square-stalk St. Johnswort
  Icacina oliviformis (Poir.) J. Raynal -- accepted -- false yam
  Icacina senegalensis A. Juss. -- not accepted -- false yam
  Ilex arimensis (Loes.) Britton ex R.O. Williams -- accepted
  Ilex guianensis var. arimensis Loes. -- not accepted
  Ilex hexandra Bello -- not accepted
  Impatiens petersiana Gilg. ex Grignan -- not accepted
  Impatiens sultani Hook. f. -- not accepted
  Impatiens walleriana Hook. f. -- accepted -- buzzy lizzy
  Indigofera arrecta Hochst. ex A. Rich. -- accepted -- Natal indigo
  Indigofera spicata Forssk. -- accepted
  Indigofera trita L. f. -- accepted -- Asian indigo
  Indigofera trita ssp. subulata (Vahl ex Poir.) Ali -- accepted -- Asian indigo
  Indigofera zollingeriana Miq. -- accepted -- Zollinger's indigo
  Inga edulis Mart. -- accepted -- icecreambean
  Inga sapindoides Willd. -- accepted
  Inga sertulifera DC. -- accepted
  Inga sertulifera ssp. leptopus (Benth.) T.D. Penn. -- accepted
  Inocarpus fagifer (Parkinson) Fosberg -- accepted
  Iochroma cyaneum (Lindl.) M.L. Green -- accepted -- violet churur
  Ipomoea coptica (L.) Roth ex Roem. & Schult. -- accepted -- alamo vine, alamovine
  Ipomoea eriocarpa R. Br. -- accepted -- morningglory
  Ipomoea mauritiana Jacq. -- accepted
  Ipomoea pauciflora M. Martens & Galeotti -- accepted -- tree morningglory
  Ipomoea pes-tigridis L. -- accepted -- morningglory
  Ipomoea tiliacea (Willd.) Choisy -- accepted
  Ipomoea trifida (Kunth) G. Don -- accepted -- threefork morningglory
  Isopogon buxifolius R. Br. -- accepted
  Isopogon cuneatus R. Br. -- accepted
  Isopogon dubius (R. Br.) Druce -- accepted -- pincushion-coneflower, rose-coneflower
  Isopogon formosus R. Br. -- accepted
  Isopogon teretifolius R. Br. -- accepted -- nodding coneflower
  Ixora acuminata Roxb. -- accepted -- bola de nieve
  Jarilla heterophylla (Cerv. ex La Llave) Rusby -- accepted -- jarilla
  Jateorhiza palmata (Lam.) Miers -- accepted
  Jatropha costaricensis G.L. Webster & Poveda -- accepted -- Costa Rican jatropha
  Juglans boliviana (C. DC.) Dode -- accepted -- Bolivian walnut
  Juglans neotropica Diels -- accepted -- Andean walnut
  Juglans X bixbyi Rehder -- accepted -- Bixby's walnut
  Juglans X intermedia Jacques -- accepted -- intermediate walnut
  Kalanchoe daigremontiana Raym.-Hamet & H. Perrier -- accepted -- devil's backbone
  Kalanchoe delagoensis Eckl. & Zeyh. -- accepted -- chandelier plant
  Kalanchoe fedtschenkoi Raym.-Hamet & H. Perrier -- accepted -- lavender scallops
  Kalanchoe gastonis-bonnieri Raym.-Hamet & H. Perrier -- accepted -- palm beachbells
  Kalanchoe grandiflora Wall. ex Wight & Arn. -- accepted
  Kalanchoe laxiflora Baker -- accepted -- milky widow's thrill
  Kalanchoe marmorata Baker -- accepted -- penwiper
  Kalanchoe pinnata (Lam.) Pers. -- accepted -- cathedral bells
  Krameria bicolor S. Watson -- accepted
  Krameria erecta Willd. ex Schult. & Schult. f. -- accepted -- littleleaf ratany, range ratany
  Krascheninnikovia ceratoides (L.) Gueldenst. -- accepted -- Pamirian winterfat
  Lagetta lagetto (Sw.) Nash -- accepted -- lacebark
  Lagunaria patersonii (Andrews) G. Don -- accepted -- cow itch tree
  Langloisia matthewsii (A. Gray) Greene -- accepted
  Lansium domesticum Corręa -- accepted -- langsat
  Lathyrus oreophyllus Wooton & Standl. -- not accepted
  Lavatera olbia L. -- accepted -- tree lavatera
  Lavatera trimestris L. -- accepted -- annual mallow
  Lecythis minor Jacq. -- accepted -- coco de mono, lecythis
  Lecythis ollaria L. -- accepted -- coco de mono, lecythis, monkeypod
  Lecythis zabucajo Aubl. -- accepted -- monkeynut, paradise nut
  Lemurophoenix J. Dransf. -- accepted
  Lepidium apetalum Willd. -- accepted
  Lepidium meyenii Walp. -- accepted -- maca
  Leucaena greggii S. Watson -- accepted
  Leucospermum cordifolium (Salisb. ex Knight) Fourc. -- accepted -- red pincushion-protea
  Lewisia serrata Heckard & Stebbins -- accepted -- saw-toothed lewisia, sawtooth lewisia
  Ligusticum mutellina (L.) Crantz -- accepted -- alpine lovage
  Limnanthemum peltatum S.G. Gmel. -- not accepted
  Limonia acidissima L. -- accepted -- Indian woodapple
  Limonium latifolium (Sm.) Kuntze -- not accepted
  Lindelofia longiflora (Benth.) Baill. -- accepted
  Lindernia dubia (L.) Pennell -- accepted -- moistbank pimpernel, shortstalk lindernia, yellow-seed false pimpernel, yellowseed false pimpernel
  Lindernia procumbens (Krock.) Philcox -- accepted -- prostrate false pimpernel
  Lindsaeaceae -- accepted
  Linnaea borealis ssp. americana (Forbes) Hultén ex R.T. Clausen -- not accepted
  Linnaea borealis var. borealis L. -- accepted -- American twinflower, twinflower
  Linnaea borealis var. longiflora Torr. -- accepted -- longtube twinflower
  Linospadix monostachya (Mart.) H. Wendl. -- not accepted -- walking-stick palm
  Linospadix monostachyos (Mart.) H. Wendl. -- accepted -- walking-stick palm
  Linum narbonense L. -- accepted -- flax
  Linum perenne ssp. alpinum (Jacq.) Stoj. & Stef. -- accepted -- alpine flax
  Linum perenne ssp. anglicum (Mill.) Ockendon -- accepted
  Liquidambar orientalis Mill. -- accepted -- Oriental sweetgum
  Lithospermum erythrorhizon Siebold & Zucc. -- accepted
  Lobelia assurgens L. -- accepted
  Lodoicea maldivica (J.F. Gmel.) Pers. -- accepted -- coco de mer, double coconut, Seychelles-nut
  Loeselia mexicana (Lam.) Brand -- accepted -- Mexican false calico
  Lomelosia Raf. -- accepted
  Lomelosia caucasica (M. Bieb.) Greuter & Burdet -- accepted
  Lomelosia palaestina (L.) Raf. -- accepted
  Lomelosia stellata (L.) Raf. -- accepted
  Lonicera acuminata Wall. -- accepted
  Lonicera alpigena L. -- accepted -- alpine honeysuckle
  Lonicera caerulea var. altaica Pall. -- accepted
  Lonicera caerulea var. dependens (Regel ex Dippel) Rehder -- accepted
  Lonicera caerulea var. edulis Turcz. ex Herder -- accepted
  Lonicera demissa Rehder -- accepted
  Lonicera ferdinandi Franch. -- accepted
  Lonicera floribunda Boiss. & Buhse -- accepted
  Lonicera gracilipes Miq. -- accepted
  Lonicera henryi Hemsl. -- not accepted
  Lonicera heterophylla Decne. -- accepted
  Lonicera korolkowii var. zabelii (Rehder) Rehder -- not accepted
  Lonicera maackii f. erubescens Rehder -- not accepted
  Lonicera maackii f. podocarpa Franch. ex Rehder -- not accepted -- late honeysuckle
  Lonicera maximowiczii (Rupr. ex Maxim.) Maxim. -- accepted
  Lonicera nervosa Maxim. -- accepted
  Lonicera nitida E.H. Wilson -- accepted -- box honeysuckle
  Lonicera praeflorens Batalin -- accepted
  Lonicera saccata Rehder -- accepted
  Lonicera tatarica var. micrantha Trautv. -- accepted
  Lonicera tatsienensis Franch. -- accepted
  Lotus tetragonolobus L. -- accepted -- winged pea
  Ludwigia decurrens (DC.) Walter -- accepted -- wingleaf primrose-willow, wingleaf waterprimrose
  Luehea seemannii Planch. & Triana -- accepted
  Luffa operculata (L.) Cogn. -- accepted -- luffa
  Lycium depressum Stocks -- accepted
  Lycopodium phlegmaria L. -- not accepted
  Lycopodium sabinifolium Willd. -- accepted -- purple loosestrife, savinleaf groundpine
  Lycopodium volubile G. Forst. -- accepted
  Macadamia ternifolia F. Muell. -- accepted
  Maclura excelsa (Welw.) Bureau -- not accepted -- African teak
  Maclura tinctoria (L.) D. Don ex Steud. -- accepted -- fustictree
  Maclura tricuspidata Carričre -- accepted -- storehousebush
  Macrotyloma geocarpum (Harms) Maréchal & Baudet -- accepted -- geocarpa groundnut
  Macrotyloma uniflorum (Lam.) Verdc. -- accepted -- horsegram
  Macrozamia spiralis (Salisb.) Miq. -- accepted
  Madhuca indica J.F. Gmel. -- not accepted -- moa tree
  Madhuca longifolia (J. Koenig ex L.) J.F. Macbr. -- accepted -- mahua
  Madhuca longifolia var. latifolia (Roxb.) A. Chev. -- accepted
  Madhuca longifolia var. longifolia (J. Koenig ex L.) J.F. Macbr. -- accepted
  Maerua crassifolia Forssk. -- accepted
  Maesa Forssk. -- accepted
  Magnolia champaca (L.) Baill. ex Pierre -- accepted
  Magnolia denudata Desr. -- accepted -- lilytree
  Magnolia doltsopa (Buch.-Ham. ex DC.) Figlar -- accepted -- sweet michelia
  Magnolia pterocarpa Roxb. -- accepted
  Magnolia stellata (Siebold & Zucc.) Maxim. -- accepted -- star magnolia
  Mahonia lomariifolia Takeda -- not accepted -- Chinese hollygrape
  Mahonia siamensis Takeda -- not accepted -- Siam hollygrape
  Maireana aphylla (R. Br.) Paul G. Wilson -- accepted -- cottonbush
  Maireana brevifolia (R. Br.) Paul G. Wilson -- accepted
  Maireana erioclada (Benth.) Paul G. Wilson -- accepted -- rosy bluebush
  Maireana georgei (Diels) Paul G. Wilson -- accepted
  Maireana pyramidata (Benth.) Paul G. Wilson -- accepted
  Maireana sedifolia (F. Muell.) Paul G. Wilson -- accepted
  Malus florentina (Zuccagni) C.K. Schneid. -- accepted -- Florentine crab apple, hawthorn-leaf crab apple
  Malus mandshurica var. sachalinensis (Juz.) Ponomar. -- not accepted -- Manchurian crab apple
  Malus orientalis Uglitzk. -- accepted
  Malus tschonoskii (Maxim.) C.K. Schneid. -- accepted -- pillar apple
  Malus X asiatica Nakai -- accepted
  Malus X hartwigii Koehne -- accepted
  Malus X micromalus Makino -- accepted -- Kaido crab apple, malus
  Malus X purpurea (A. Barbier) Rehder -- accepted
  Malus X robusta (Carričre) Rehder -- accepted -- Siberian crab apple
  Malus X scheideckeri Spath ex Zabel -- accepted
  Malva arborea (L.) Webb & Berthel. -- accepted -- tree mallow
  Malva assurgentiflora (Kellogg) M.F. Ray -- accepted
  Malva multiflora (Cav.) Soldano, Banfi & Galasso -- accepted
  Malva occidentalis (S. Watson) M.F. Ray -- accepted
  Malva pacifica M.F. Ray -- accepted
  Malvastrum hispidum (Pursh) Hochr. -- accepted -- hispid false mallow
  Mammea africana Sabine -- accepted -- African mammee-apple, mamey
  Mancoa Wedd. -- accepted
  Mandragora officinarum L. -- accepted -- mandrake
  Mangifera altissima Blanco -- accepted -- pahutan
  Mangifera caesia Jack -- accepted -- binjai
  Mangifera foetida Lour. -- accepted -- bachang
  Mangifera odorata Griff. -- accepted -- kwini
  Manihot caerulescens Pohl -- accepted -- manicoba
  Manihot catingae Ule -- accepted -- manicoba brava
  Manihot dichotoma Ule -- accepted -- manicoba rubber
  Marah fabacea (Naudin) Greene -- accepted -- California manroot, valley manroot
  Marah fabacea var. agrestis (Greene) Stocking -- accepted -- California manroot
  Marah horrida (Cogn.) Dunn -- accepted -- Sierra manroot
  Marah macrocarpa (Greene) Greene -- accepted -- Cucamonga manroot
  Marah macrocarpa var. macrocarpa (Greene) Greene -- accepted -- Cucamonga manroot
  Marah macrocarpa var. major (Dunn) Stocking -- accepted -- Cucamonga manroot
  Marah macrocarpa var. micrantha (Dunn) Stocking -- accepted -- Cucamonga manroot
  Marah macrocarpus (Greene) Greene -- not accepted -- Cucamonga manroot
  Marah oregana (Torr. ex A. Gray) Howell -- accepted -- coastal manroot, western wildcucumber
  Maurandella antirrhiniflora (Humb. & Bonpl. ex Willd.) Rothm. -- accepted -- climbing snapdragon, roving sailor
  Meconopsis Vig. -- accepted
  Meconopsis regia G. Taylor -- accepted
  Medicago ruthenica (L.) Trautv. -- accepted -- alfalfa
  Medicago secundiflora Durieu -- accepted -- island medick
  Medinilla heterophylla A. Gray -- accepted
  Meiogyne Miq. -- accepted
  Meiogyne cylindrocarpa (Burck) Heusden -- accepted
  Melanorrhoea Wall. -- not accepted
  Melanorrhoea usitata Wall. -- not accepted -- Burmese lacquer
  Melicoccus pedicellaris (Sagot ex Radlk.) Acev.-Rodr. -- accepted
  Melicope ternata J.R. Forst. & G. Forst. -- accepted
  Melilotus albus Medik. -- accepted -- Bokhara-clover, honey-clover, white melilot, white sweet-clover
  Melilotus suaveolens Ledeb. -- accepted -- Daghestan sweet-clover, sweetclover
  Melothria sphaerocarpa (Cogn.) H. Schaef. & S.S. Renner -- accepted
  Menyanthes L. -- accepted -- bogbean, buckbean
  Menyanthes cristata Roxb. -- not accepted
  Menyanthes trifoliata L. -- accepted -- bog-bean, buck-bean, buckbean, common bogbean
  Merremia hederacea (Burm. f.) Hallier f. -- accepted -- ivy woodrose
  Merremia peltata (L.) Merr. -- accepted
  Micrandra siphonioides Benth. -- accepted
  Microcitrus australasica (F. Muell.) Swingle -- accepted -- Australian finger lime
  Microcitrus australis (Planch.) Swingle -- accepted -- Australian round lime
  Microgramma reptans (Cav.) A.R. Sm. -- accepted
  Microgramma vacciniifolia (Langsd. & Fisch.) Copel. -- accepted
  Microsorum irregulare Link -- not accepted
  Microsorum punctatum (L.) Copel. -- accepted
  Milicia Sim -- accepted
  Milicia excelsa (Welw.) C.C. Berg -- accepted
  Mimulus cupreus hort. ex Dombrain -- accepted
  Mimulus michiganensis (Pennell) Posto & Prather -- accepted -- Michigan monkey-flower, Michigan monkeyflower
  Minuartia graminifolia (Ard.) Jáv. -- accepted
  Minuartia hybrida (Vill.) Schischk. -- accepted -- slender-leaf sandwort
  Minuartia laricifolia (L.) Schinz & Thell. -- accepted
  Minuartia tenuifolia (L.) Hiern -- not accepted
  Minuartia verna (L.) Hiern -- accepted -- vernal stitchwort
  Mirabilis expansa (Ruiz & Pav.) Standl. -- accepted -- mauka
  Misodendrum brachystachyum DC. -- accepted
  Misopates orontium (L.) Raf. -- accepted -- linearleaf snapdragon
  Mollugo pentaphylla L. -- accepted -- carpet-weed, carpetweed
  Momordica dioica Roxb. ex Willd. -- accepted -- balsampear
  Monodora myristica (Gaertn.) Dunal -- accepted -- calabash nutmeg
  Morella californica (Cham.) Wilbur -- accepted -- California wax myrtle
  Morella caroliniensis (Mill.) Small -- accepted -- evergreen bayberry, southern bayberry
  Morella cerifera (L.) Small -- accepted -- wax myrtle, waxmyrtle
  Morella cordifolia (L.) Killick -- accepted -- waxberry
  Morella faya (Aiton) Wilbur -- accepted -- firetree
  Morella pensylvanica (Mirb.) Kartesz -- accepted -- northern bayberry
  Morella rubra Lour. -- accepted -- red bayberry
  Moricandia arvensis (L.) DC. -- accepted -- purple mistress
  Morinda royoc L. -- accepted -- redgal
  Murdannia keisak (Hassk.) Hand.-Mazz. -- accepted -- Asian spiderwort, marsh dewflower, wart-removing herb
  Murraya exotica L. -- not accepted -- Chinese box
  Murraya paniculata (L.) Jack -- accepted
  Myoporum parvifolium R. Br. -- accepted -- slender myoporum
  Myosotidium hortensia (Decne.) Baill. -- accepted -- giant forget-me-not
  Myroxylon balsamum (L.) Harms -- accepted -- balsam of Tolu
  Napaea dioica L. -- accepted -- glademallow
  Nelumbo pentapetala (Walter) Willd. -- not accepted
  Neopanax Allan -- accepted
  Neopanax laetus (Kirk) Allan -- accepted
  Nepenthes adnata Tamin & M. Hotta ex Schlauer -- accepted
  Nepenthes alata Blanco -- accepted
  Nepenthes albomarginata T. Lobb ex Lindl. -- accepted
  Nepenthes ampullaria Jack -- accepted
  Nepenthes anamensis Macfarl. -- not accepted
  Nepenthes andamana M. Catal. -- accepted
  Nepenthes angasanensis Maulder, Schubert, Salmon & Quinn -- not accepted
  Nepenthes argentii Jebb & Cheek -- accepted
  Nepenthes aristolochioides Jebb & Cheek -- accepted
  Nepenthes attenboroughii A.S. Rob., S. McPherson & V.B. Heinrich -- accepted
  Nepenthes beccariana Macfarl. -- not accepted
  Nepenthes bellii K. Kondo -- accepted
  Nepenthes benstonei C. Clarke -- accepted
  Nepenthes bicalcarata Hook. f. -- accepted
  Nepenthes bokor Cheek -- not accepted
  Nepenthes bokorensis Mey -- accepted
  Nepenthes bongso Korth. -- accepted
  Nepenthes boschiana Korth. -- accepted
  Nepenthes boschiana var. sumatrana Miq. -- not accepted
  Nepenthes burbidgeae Hook. f. ex Burb. -- accepted
  Nepenthes campanulata Sh. Kurata -- accepted
  Nepenthes chang M. Catal. -- accepted
  Nepenthes chaniana C. Clarke, Chi. C. Lee & S. McPherson -- accepted
  Nepenthes clipeata Danser -- accepted
  Nepenthes copelandii Merr. ex Macfarl. -- not accepted
  Nepenthes danseri Jebb & Cheek -- accepted
  Nepenthes deaniana Macfarl. -- accepted
  Nepenthes densiflora Danser -- accepted
  Nepenthes diatas Jebb & Cheek -- accepted
  Nepenthes distillatoria L. -- accepted
  Nepenthes dubia Danser -- accepted
  Nepenthes edwardsiana Low ex Hook. f. -- accepted
  Nepenthes edwardsiana ssp. macrophylla Marabini -- not accepted
  Nepenthes ephippiata Danser -- accepted
  Nepenthes eustachya Miq. -- accepted
  Nepenthes eymae Sh. Kurata -- accepted
  Nepenthes faizaliana J.H. Adam & Wilcock -- accepted
  Nepenthes flava Wistuba, Nerz & A. Fleischm. -- accepted
  Nepenthes fusca Danser -- accepted
  Nepenthes glabrata J.R. Turnbull & A.T. Middleton -- accepted
  Nepenthes glandulifera Chi. C. Lee -- accepted
  Nepenthes globamphora Sh. Kurata & Toyoshima -- not accepted
  Nepenthes gracilis Korth. -- accepted
  Nepenthes gracillima Ridl. -- accepted
  Nepenthes gymnamphora Nees -- accepted
  Nepenthes hamata J.R. Turnbull & A.T. Middleton -- accepted
  Nepenthes hirsuta Hook. f. -- accepted
  Nepenthes hispida Beck -- accepted
  Nepenthes hurrelliana Cheek & A.L. Lamb -- accepted
  Nepenthes inermis Danser -- accepted
  Nepenthes insignis Danser -- accepted
  Nepenthes izumiae Troy Davis, C. Clarke & Tamin -- accepted
  Nepenthes jacquelineae Clarke, Davis & Tamin -- accepted
  Nepenthes jamban Chi. C. Lee, Hernawati & Akhriadi -- accepted
  Nepenthes kampotiana Lecomte -- accepted
  Nepenthes kerrii M. Catal. & Kruetr. -- accepted
  Nepenthes khasiana Hook. f. -- accepted
  Nepenthes klossii Ridl. -- accepted
  Nepenthes lamii Jebb & Cheek -- accepted
  Nepenthes lavicola Wistuba & Rischer -- accepted
  Nepenthes lindleyana Low ex W. Baxt. -- not accepted
  Nepenthes lingulata Chi. C. Lee, Hernawati & Akhriadi -- accepted
  Nepenthes longifolia Nerz & Wistuba -- accepted
  Nepenthes lowii Hook. f. -- accepted
  Nepenthes macfarlanei Hemsl. -- accepted
  Nepenthes macrophylla (Marabini) Jebb & Cheek -- accepted
  Nepenthes macrovulgaris J.R. Turnbull & A.T. Middleton -- accepted
  Nepenthes madagascariensis Poir. -- accepted
  Nepenthes mantalingajanensis Nerz & Wistuba -- accepted
  Nepenthes mapuluensis J.H. Adam & Wilcock -- accepted
  Nepenthes masoalensis Schmid-Hollinger -- accepted
  Nepenthes maxima Reinw. ex Nees -- accepted
  Nepenthes merrilliana Macfarl. -- accepted
  Nepenthes micramphora V.B. Heinrich, S. McPherson, Gronem. & V.B. Amoroso -- accepted
  Nepenthes mikei B. Salmon & Maulder -- accepted
  Nepenthes mindanaoensis Sh. Kurata -- accepted
  Nepenthes mira Jebb & Cheek -- accepted
  Nepenthes mirabilis (Lour.) Druce -- accepted
  Nepenthes mollis Danser -- accepted
  Nepenthes muluensis M. Hotta -- accepted
  Nepenthes murudensis Culham ex Jebb & Cheek -- accepted
  Nepenthes naga Akhriadi, Hernawati, Primaldhi & M. Hambali -- accepted
  Nepenthes neoguineensis Macfarl. -- accepted
  Nepenthes northiana Hook. f. -- accepted
  Nepenthes ovata Nerz & Wistuba -- accepted
  Nepenthes paniculata Danser -- accepted
  Nepenthes papuana Danser -- accepted
  Nepenthes pectinata Danser -- accepted
  Nepenthes pervillei Blume -- accepted
  Nepenthes petiolata Danser -- accepted
  Nepenthes philippinensis Macfarl. -- accepted
  Nepenthes phyllamphora Willd. -- not accepted
  Nepenthes pilosa Danser -- accepted
  Nepenthes pitopangii Chi. C. Lee, S. McPherson, Bourke & M. Mansur -- accepted
  Nepenthes platychila Chi. C. Lee -- accepted
  Nepenthes rafflesiana Jack -- accepted
  Nepenthes rajah Hook. f. -- accepted
  Nepenthes ramispina Ridl. -- accepted
  Nepenthes reinwardtiana Miq. -- accepted
  Nepenthes rhombicaulis Sh. Kurata -- accepted
  Nepenthes rigidifolia Akhriadi, Hernawati & Tamin -- accepted
  Nepenthes rowanae F.M. Bailey -- accepted
  Nepenthes sanguinea Lindl. -- accepted
  Nepenthes saranganiensis Sh. Kurata -- accepted
  Nepenthes sibuyanensis Nerz -- accepted
  Nepenthes singalana Becc. -- accepted
  Nepenthes smilesii Hemsl. -- accepted
  Nepenthes spathulata Danser -- accepted
  Nepenthes spectabilis Danser -- accepted
  Nepenthes stenophylla Mast. -- accepted
  Nepenthes sumatrana (Miq.) G. Beck -- accepted
  Nepenthes suratensis M. Catal. -- accepted
  Nepenthes surigaoensis Elmer -- accepted
  Nepenthes talangensis Nerz & Wistuba -- accepted
  Nepenthes tenax C. Clarke & R. Kruger -- accepted
  Nepenthes tentaculata Hook. f. -- accepted
  Nepenthes tenuis Nerz & Wistuba -- accepted
  Nepenthes thai Cheek -- accepted
  Nepenthes thorelii Lecomte -- accepted
  Nepenthes tobaica Danser -- accepted
  Nepenthes tomoriana Danser -- accepted
  Nepenthes treubiana Warb. -- accepted
  Nepenthes truncata Macfarl. -- accepted
  Nepenthes veitchii Hook. f. -- accepted
  Nepenthes ventricosa Blanco -- accepted
  Nepenthes vieillardii Hook. f. -- accepted
  Nepenthes villosa Hook. f. -- accepted
  Nepenthes vogelii Schuit. & de Vogel -- accepted
  Nepenthes X bauensis Chi. C. Lee -- accepted
  Nepenthes X cincta Mast. -- accepted
  Nepenthes X coccinea Mast. -- accepted
  Nepenthes X ferrugineomarginata Sh. Kurata -- not accepted
  Nepenthes X harryana Burb. -- accepted
  Nepenthes X hookeriana Lindl. -- accepted
  Nepenthes X kinabaluensis Sh. Kurata -- accepted
  Nepenthes X kuchingensis Sh. Kurata -- not accepted
  Nepenthes X pyriformis Sh. Kurata (pro sp.) -- accepted
  Nepenthes X sarawakiensis J.H. Adam & Wilcock -- not accepted
  Nepenthes X trichocarpa Miq. -- accepted
  Nepenthes X trusmadiensis Marabini -- accepted
  Nephelium mutabile Blume -- not accepted -- pulasan
  Nephelium ramboutan-ake (Labill.) Leenh. -- accepted
  Nephrophyllidium Gilg -- accepted -- deercabbage
  Nephrophyllidium crista-galli (Menzies ex Hook.) Gilg -- accepted -- deer-cabbage, deercabbage
  Nesogenes rotensis Fosberg & D.R. Herbst -- accepted
  Nestronia umbellula Raf. -- accepted -- leechbrush
  Nicotiana excelsior (J.M. Black) J.M. Black -- accepted -- tobacco
  Nicotiana forgetiana hort. ex Hemsl. -- accepted -- tobacco
  Nicotiana glutinosa L. -- accepted -- tobacco
  Nicotiana langsdorffii Weinm. -- accepted -- Langsdorff's tobacco
  Nicotiana paniculata L. -- accepted -- tobacco
  Nicotiana tomentosa Ruiz & Pav. -- accepted -- tobacco
  Nigella hispanica L. -- accepted -- Spanish fennel
  Notholaena candida (M. Martens & Galeotti) Hook. -- accepted
  Notholaena schaffneri (E. Fourn.) Underw. ex Davenp. -- accepted
  Nuphar lutea (L.) Sm. -- accepted -- yellow cowlily, yellow pond-lily, yellow pondlily
  Nylandtia spinosa (L.) Dumort. -- not accepted -- bokbessie, duinebessie, skilpadbessie
  Nymphaea glandulifera Rodschied -- accepted -- sleepingbeauty waterlily
  Nymphaea micrantha Guill. & Perr. -- accepted
  Nymphaea pentapetalum Walter -- not accepted
  Nymphoides aquatica (J.F. Gmel.) Kuntze -- accepted -- big floatingheart
  Nymphoides cordata (Elliott) Fernald -- accepted -- little floatingheart
  Nymphoides cristata (Roxb.) Kuntze -- accepted -- crested floatingheart
  Nymphoides humboldtiana (Kunth) Kuntze -- not accepted
  Nymphoides hydrophylla (Lour.) Kuntze -- accepted
  Nymphoides indica (L.) Kuntze -- accepted -- water snowflake, water-snowflake
  Nymphoides peltata (S.G. Gmel.) Kuntze -- accepted -- floating heart, yellow floating-heart, yellow floatingheart
  Odontites vernus (Bellardi) Dumort. -- accepted -- red bartsia
  Oenanthe fistulosa L. -- accepted
  Oncoba routledgei Sprague -- accepted
  Oncoba spinosa Forssk. -- accepted
  Ongokea gore (Hua) Pierre -- accepted -- boleko nut
  Onobrychis altissima Grossh. -- accepted
  Onobrychis arenaria (Kit.) DC. -- accepted
  Onobrychis argentea Boiss. -- accepted
  Onobrychis biebersteinii Sirj. -- accepted
  Onobrychis caput-galli (L.) Lam. -- accepted -- cockshead sainfoin
  Onobrychis gaubae Bornm. -- accepted
  Onobrychis grandis Lipsky -- accepted
  Onosma echioides L. -- accepted
  Orchis morio L. -- accepted -- green-winged orchid
  Oreomunnea Oerst. -- accepted
  Oreomunnea pterocarpa Oerst. -- accepted
  Ormosia macrocalyx Ducke -- accepted
  Orobanche crenata Forssk. -- accepted -- bean broomrape
  Orobanche dugesii (S. Watson) Munz -- accepted -- Duges' broomrape
  Orobanche ludoviciana var. latiloba Munz -- not accepted
  Orothamnus Pappe ex Hook. -- accepted
  Orothamnus zeyheri Pappe ex Hook. -- accepted
  Osmorhiza aristata (Thunb.) Rydb. -- accepted
  Oxalis articulata Savigny -- accepted -- jointed woodsorrel
  Oxalis rosea Feuillée ex Jacq. -- accepted -- sorrel
  Oxalis triangularis A. St.-Hil. -- accepted
  Oxalis tuberosa Molina -- accepted -- oca
  Paeonia corallina Retz. -- not accepted -- peony
  Paeonia mascula (L.) Mill. -- accepted
  Palisota Rchb. ex Endl. -- accepted
  Panax japonicus (T. Nees) C.A. Mey. -- accepted -- Japanese ginseng
  Pangium edule Reinw. -- accepted
  Papaver alboroseum var. elongatum Hultén -- not accepted
  Papaver bracteatum Lindl. -- accepted -- Oriental poppy
  Papaver commutatum Fisch. & C.A. Mey. -- accepted
  Papaver croceum Ledeb. -- not accepted -- ice poppy
  Papaver lateritium K. Koch -- accepted -- Armenian poppy
  Paraderris (Miq.) R. Geesink -- accepted
  Paraderris elliptica (Wall.) Adema -- accepted
  Parkia filicoidea Welw. ex Oliv. -- accepted -- African locust bean
  Parrotia persica (DC.) C.A. Mey. -- accepted -- Persian ironwood
  Passiflora alata Curtis -- accepted
  Passiflora antioquiensis H. Karst. -- accepted -- passionflower
  Passiflora caeruleo-racemosa Sabine -- not accepted -- passionflower
  Passiflora cincinnata Mast. -- accepted -- crato passionvine
  Passiflora racemosa Brot. -- accepted -- passionflower
  Passiflora X colvillii Sweet -- accepted -- Colville's passionflower
  Patellifolia A.J. Scott, Ford-Lloyd & J.T. Williams -- accepted
  Patellifolia patellaris (Moq.) A.J. Scott, Ford-Lloyd & J.T. Williams -- accepted
  Paullinia cupana Kunth -- accepted -- guarana
  Paullinia yoco R.E. Schult. & Killip -- accepted -- yoco
  Pavonia burchellii (DC.) R.A. Dyer -- accepted
  Pelargonium radens H.E. Moore -- accepted -- rasp-leaf pelargonium
  Penstemon campanulatus (Cav.) Willd. -- accepted -- bellflower beardtongue
  Penstemon gentianoides (Kunth) Poir. -- accepted -- gentian beardtongue
  Penstemon hartwegii Benth. -- accepted -- Hartweg's beardtongue
  Pentadesma butyracea Sabine -- accepted -- butter tree
  Pentaglottis sempervirens (L.) Tausch ex L.H. Bailey -- accepted -- evergreen bugloss
  Peperomia angustata Kunth -- accepted
  Peperomia pereskiifolia (Jacq.) Kunth -- accepted -- peperomia
  Pericopsis elata (Harms) Meeuwen -- accepted
  Persea americana var. guatemalensis (L.O. Williams) Scora -- not accepted
  Persea americana var. nubigena (L.O. Williams) L.E. Kopp. -- not accepted
  Persicaria decipiens (R. Br.) K.L. Wilson -- accepted
  Petroselinum crispum (Mill.) Fuss -- accepted -- parsley
  Peucedanum officinale L. -- accepted -- hog's-fennel, sulphurweed
  Peumus boldus Molina -- accepted -- boldo
  Phedimus kamtschaticus (Fisch. & C.A. Mey.) 't Hart -- accepted -- orange stonecrop
  Phedimus selskianus (Regel & Maack) 't Hart -- accepted
  Philadelphus caucasicus Koehne -- accepted -- Caucasus mockorange, golden mock orange
  Philadelphus tomentosus Wall. ex G. Don -- accepted -- fuzzy mock orange
  Phoenix hanceana Naudin -- not accepted
  Phoenix loureiroi Kunth -- accepted -- Loureir's date palm
  Photinia niitakayamensis Hayata -- accepted
  Photinia villosa var. laevis (Thunb.) Dippel -- accepted
  Photinia villosa var. sinica Rehder & E.H. Wilson -- accepted
  Photinia X fraseri Dress -- accepted -- Fraser's photinia
  Phygelius capensis E. Mey. ex Benth. -- accepted -- Cape-fuchsia
  Phyllamphora mirabilis Lour. -- not accepted
  Phyllanthus saffordii Merr. -- accepted
  Phylloglossum Kunze -- not accepted
  Phylloglossum drummondii Kunze -- not accepted -- pigmy clubmoss
  Phymosia umbellata (Cav.) Kearney -- accepted
  Physocarpus bracteatus (Rydb.) Rehder -- accepted
  Phytolacca dodecandra L'Her. -- accepted -- pokeweed
  Picrorhiza Royle ex Benth. -- accepted
  Picrorhiza kurrooa Royle -- accepted
  Pilocarpus jaborandi Holmes -- accepted -- jaborandi
  Pimelea Banks ex Gaertn. -- accepted
  Pimelea physodes Hook. -- accepted
  Piper angustifolium Lam. -- accepted -- pepper
  Piper cubeba L. f. -- accepted -- cubeb
  Piper guineense Schumach. & Thonn. -- accepted -- pepper
  Piper hispidum Sw. -- accepted -- Jamaican pepper
  Piper longifolium Ruiz & Pav. -- accepted -- pepper
  Piper longum L. -- accepted -- Indian long pepper
  Piper nigrum L. -- accepted -- black pepper
  Piper ornatum N.E. Br. -- accepted -- Celebes pepper
  Piper retrofractum Vahl -- accepted -- Javanese long pepper
  Pistacia lentiscus L. -- accepted -- mastic tree
  Pistacia terebinthus L. -- accepted -- Cyprus turpentine
  Pistacia vera L. -- accepted -- pistachio nut
  Pisum L. -- accepted -- pea
  Pisum humile Boiss. & Noë -- not accepted
  Pisum sativum var. arvense (L.) Poir. -- accepted -- Austrian winter pea, field pea
  Pisum sativum var. elatius (Steven ex M. Bieb.) Alef. -- accepted
  Pisum sativum var. macrocarpon Ser. -- accepted
  Pisum sativum var. pumilio Meikle -- accepted
  Pisum sativum var. sativum L. -- accepted -- garden pea
  Pisum syriacum (A. Berger) C.O. Lehm. -- not accepted -- Syrian pea
  Pittosporum resiniferum Hemsl. -- accepted -- resin cheesewood
  Platycarya strobilacea Siebold & Zucc. -- accepted
  Platymiscium pleiostachyum Donn. Sm. -- accepted
  Podophyllum hexandrum Royle -- accepted -- Himalayan mayapple
  Polemonium acutiflorum Willd. ex Roem. & Schult. -- not accepted -- tall Jacob's-ladder
  Polemonium caeruleum ssp. himalayanum (Baker) H. Hara -- accepted
  Polemonium caeruleum ssp. villosum (J.H. Rudolph ex Georgi) Brand -- accepted
  Pollichia campestris Aiton -- accepted
  Polycarpon alsinifolium (Biv.) DC. -- accepted -- fourleaf manyseed
  Polygala crotalarioides Buch.-Ham. ex DC. -- accepted
  Polygala virgata Thunb. -- accepted
  Polygonum equisetiforme Sm. -- accepted
  Polygonum franktonii S.J. Wolf & McNeill -- accepted -- Nova Scotia knotweed
  Polygonum glabrum sensu Cham. & Schltdl. -- not accepted
  Polygonum lacerum Kunth -- accepted -- fringed knotweed
  Polypodium ciliatum Willd. -- not accepted
  Polystichum polyblepharum (Roem. & Kunze) C. Presl -- accepted -- Korean tasselfern
  Pongamia Vent. -- not accepted
  Populus maximowiczii A. Henry -- accepted -- Japanese poplar
  Populus simonii Carričre -- accepted -- Chinese cottonwood, Simon poplar
  Populus tristis Fisch. -- accepted
  Populus X petrowskiana R.I. Schröd. ex Regel -- accepted
  Porana Burm. f. -- accepted
  Potentilla buccoana Clementi -- accepted
  Potentilla collina Wibel -- accepted -- palmleaf cinquefoil
  Poterium L. -- not accepted
  Poterium sanguisorba L. -- not accepted -- burnet bloodwort, fodder burnet, salad burnet
  Poterium sanguisorba var. polygamum (Waldst. & Kit.) Vis. -- not accepted -- burnet bloodwort, fodder burnet, salad burnet
  Pouteria caimito (Ruiz & Pav.) Radlk. -- accepted -- abiu
  Pouteria dominigensis (C.F. Gaertn.) Baehni -- accepted -- jacana
  Pouteria viridis (Pittier) Cronquist -- accepted
  Primula elatior (L.) Hill -- accepted -- oxlip
  Primula matsumurae Petitm. -- not accepted
  Primula modesta Bisset & S. Moore -- accepted
  Primula modesta var. matsumurae (Petitm.) Takeda -- accepted
  Primula pulverulenta Duthie -- accepted
  Primula vulgaris Huds. -- accepted -- English primrose
  Primula wilsonii var. anisodora (Balf. f. & Forrest) A.J. Richards -- accepted
  Prosopis africana (Guill. & Perr.) Taub. -- accepted -- African mesquite
  Prosopis alba Griseb. -- accepted -- algarrobo blanco
  Prosopis alpataco Phil. -- accepted -- mesquite
  Prosopis argentina Burkart -- accepted -- mesquite
  Prosopis burkartii Muńoz -- accepted -- mesquite
  Prosopis caldenia Burkart -- accepted -- mesquite
  Prosopis calingastana Burkart -- accepted -- cusqui, mesquite
  Prosopis campestris Griseb. -- accepted -- mesquite
  Prosopis castellanosii Burkart -- accepted -- mesquite
  Prosopis chilensis (Molina) Stuntz -- accepted -- algarrobo
  Prosopis cineraria (L.) Druce -- accepted -- jand
  Prosopis denudans Benth. -- accepted -- mesquite
  Prosopis elata (Burkart) Burkart -- accepted -- mesquite
  Prosopis ferox Griseb. -- accepted -- mesquite
  Prosopis fiebrigii Harms -- accepted -- mesquite
  Prosopis hassleri Harms ex Hassl. -- accepted -- mesquite
  Prosopis humilis Gillies ex Hook. & Arn. -- accepted -- mesquite
  Prosopis kuntzei Harms ex Hassl. -- accepted -- mesquite
  Prosopis nigra (Griseb.) Hieron. -- accepted -- algarrobo negro
  Prosopis palmeri S. Watson -- accepted -- mesquite
  Prosopis rojasiana Burkart -- accepted -- mesquite
  Prosopis ruizlealii Burkart -- accepted -- mesquite
  Prosopis ruscifolia Griseb. -- accepted -- mesquite
  Prosopis sericantha Gillies ex Hook. & Arn. -- accepted -- mesquite
  Prosopis tamarugo F. Phil. -- accepted -- tamarugo
  Prosopis torquata (Cav. ex Lag.) DC. -- accepted -- mesquite
  Protea cynaroides (L.) L. -- accepted -- king protea
  Protea odorata Thunb. -- accepted
  Prunus africana (Hook. f.) Kalkman -- accepted
  Prunus japonica Thunb. -- accepted -- Japanese bush cherry
  Prunus maackii Rupr. -- accepted -- Amur chokecherry
  Prunus maximowiczii Rupr. -- accepted -- Korean cherry
  Prunus mume Siebold & Zucc. -- accepted -- Japanese apricot
  Prunus pedunculata (Pall.) Maxim. -- accepted
  Prunus salicina var. mandshurica (Skvortsov) Skvortsov & A.I. Baranov -- accepted
  Prunus serotina var. salicifolia (Kunth) Koehne -- accepted
  Prunus serrulata Lindl. -- accepted -- Japanese flowering cherry
  Prunus tenella Batsch -- accepted -- dwarf Russian almond, prunus, Russian almond
  Prunus triloba Lindl. -- accepted -- flowering plum
  Pseudobombax ellipticum (Kunth) Dugand -- accepted -- shavingbrush tree
  Pseudofumaria Medik. -- accepted
  Psidium friedrichsthalianum (O. Berg) Nied. -- accepted -- wild guava
  Psidium montanum Sw. -- accepted -- mountain guava
  Psophocarpus palustris Desv. -- accepted
  Psophocarpus tetragonolobus (L.) DC. -- accepted -- winged bean
  Ptelea aptera Parry -- accepted
  Pteris heterophylla L. -- not accepted
  Pteris hexagona (L.) Proctor -- accepted
  Pterocarpus Jacq. -- accepted
  Pterocarpus erinaceus Poir. -- accepted -- barwood
  Pterocarpus marsupium Roxb. -- accepted -- Malabar kino
  Pterocarpus osun Craib -- accepted
  Pterocarpus santalinus L. f. -- accepted -- red sandalwood
  Pterocarpus soyauxii Taub. -- accepted -- barwood
  Pterocarya stenoptera C. DC. -- accepted -- Chinese wingnut
  Pterygota alata (Roxb.) R. Br. -- accepted
  Pterygota excelsa (Standl. & L.O. Williams) Kosterm. -- accepted
  Purshia mexicana (D. Don) S.L. Welsh -- accepted -- Mexican cliffrose
  Purshia mexicana var. stansburyana (Torr.) S.L. Welsh -- accepted
  Purshia X subintegra (Kearney) Henrickson (pro sp.) -- accepted -- Arizona cliffrose, subintegra bitterbrush
  Quassia L. -- accepted
  Quercus brantii Lindl. -- accepted -- Brant's oak
  Quercus copeyensis C.H. Mull. -- accepted
  Quercus frainetto Ten. -- accepted -- Italian oak
  Quercus glauca Thunb. -- accepted -- ring-cup oak
  Quercus infectoria Olivier -- accepted -- aleppo oak
  Quercus ithaburensis Decne. -- accepted
  Quercus ithaburensis ssp. ithaburensis Decne. -- accepted
  Quercus ithaburensis ssp. macrolepis (Kotschy) Hedge & Yalt. -- accepted
  Quercus petraea (Matt.) Liebl. -- accepted -- durmast oak
  Quercus serrata Murray -- accepted -- bao li
  Quillaja Molina -- accepted
  Quillaja saponaria Molina -- accepted -- soapbark
  Quisqualis indica L. -- not accepted -- Rangoon creeper
  Racosperma melanoxylon (R. Br.) Pedley -- not accepted
  Ranunculus aconitifolius L. -- accepted
  Ranunculus gramineus L. -- accepted
  Ranunculus lappaceus Sm. -- accepted -- Australian buttercup
  Raphanus confusus (Greuter & Burdet) Al-Shehbaz & Warwick -- accepted
  Ravenala madagascariensis Sonn. -- accepted -- traveler's tree
  Reseda scoparia Brouss. ex Willd. -- accepted
  Retama raetam (Forssk.) Webb & Berthel. -- accepted -- retem
  Rhamnus crocea Nutt. -- accepted -- hollyleaf buckthorn, redberry buckthorn
  Rhamnus globosa Bunge -- accepted -- lokao
  Rhamnus libanotica Boiss. -- accepted
  Rhamnus lycioides L. -- accepted
  Rhamnus lycioides ssp. oleoides (L.) Jahand. & Maire -- accepted
  Rhamnus petiolaris Boiss. -- accepted
  Rhamnus saxatilis Jacq. -- accepted -- rock buckthorn
  Rhamnus X spathulifolia Fisch. & C.A. Mey. -- accepted
  Rheedia lateriflora L. -- not accepted
  Rheum officinale Baill. -- accepted -- Chinese rhubarb
  Rheum palmatum L. -- accepted -- Chinese rhubarb
  Rhizophora apiculata Blume -- accepted -- mangrove
  Rhizophora mucronata Lam. -- accepted -- mangrove
  Rhus aromatica var. pilosissima (Engl.) Shinners -- accepted -- pubescent skunkbush sumac, pubescent squawbush, skunkbush sumac
  Rhus aromatica var. serotina (Greene) Rehder -- not accepted -- fragrant sumac
  Rhus aromatica var. simplicifolia (Greene) Cronquist -- accepted -- single-leaf skunkbush, skunkbush sumac
  Rhus aromatica var. trilobata (Nutt.) A. Gray ex S. Watson -- not accepted -- ill-scented sumac, skunkbush sumac
  Rhus copallinum L. -- accepted -- flameleaf sumac, shining sumac, winged sumac
  Rhus copallinum var. copallinum L. -- accepted -- flameleaf sumac, shining sumac, winged sumac
  Rhus coriaria L. -- accepted -- Sicilian sumac
  Rhus lancea L. f. -- not accepted -- African sumac, karee, willow rhus
  Rhus taitensis Guill. -- accepted
  Ribes petraeum Wulfen -- accepted -- currant
  Ribes petraeum var. atropurpureum (C.A. Mey.) C.K. Schneid. -- accepted
  Ribes spicatum E. Robson -- accepted -- currant
  Ribes X gordonianum Lem. -- accepted
  Robinia grandiflora L. -- not accepted
  Rollandia Gaudich. -- not accepted
  Rosa abyssinica R. Br. ex Lindl. -- accepted
  Rosa acicularis var. nipponensis (Crép.) Koehne -- accepted
  Rosa agrestis Savi -- accepted -- fieldbriar
  Rosa arvensis Huds. -- accepted -- field rose, musk rose
  Rosa ecae Aitch. -- accepted
  Rosa hemisphaerica Herrm. -- accepted -- sulphur rose
  Rosa hemsleyana Tackh. -- accepted
  Rosa jundzillii Besser -- accepted
  Rosa maracandica Bunge -- accepted
  Rosa marretii H. Lév. -- accepted
  Rosa maximowicziana Regel -- accepted
  Rosa mollis Sm. -- accepted
  Rosa montana Chaix -- accepted
  Rosa nitidula Besser -- accepted
  Rosa pendulina L. -- accepted -- alpine rose, mountain rose
  Rosa pouzinii Tratt. -- accepted
  Rosa prattii Hemsl. -- accepted
  Rosa pulverulenta M. Bieb. -- accepted
  Rosa roxburghii var. hirtula (Regel) Rehder & E.H. Wilson -- accepted
  Rosa sericea ssp. omeiensis (Rolfe) A.V. Roberts -- accepted
  Rosa sinowilsonii Hemsl. -- accepted
  Rosa tuschetica Boiss. -- accepted
  Rosa X dupontii Déségl. -- accepted
  Rosa X iwara Sieber ex Regel -- accepted
  Rosa X kamtchatica Vent. -- accepted
  Rosa X waitziana Tratt. -- accepted
  Rubus amplificatus Lees -- accepted
  Rubus canescens DC. -- accepted
  Rubus cockburnianus Hemsl. -- accepted
  Rubus fruticosus L. -- not accepted -- bramble blackberry, shrubby blackberry, wild blackberry complex
  Rubus hayata-koidzumii Naruh. -- accepted -- yü-shan raspberry
  Rubus loganobaccus L.H. Bailey -- accepted -- loganberry
  Rubus macrophyllus Weihe & Nees -- accepted -- largeleaf blackberry
  Rubus moluccanus L. -- accepted -- eelkek, kohkihl, Molucca bramble, Molucca raspberry, soni, wa ngandrongandro, wild blackberry, wild raspberry
  Rubus plicatus Weihe & Nees -- accepted
  Rubus rudis Weihe -- accepted
  Rubus tomentosus Borkh. -- not accepted -- blackcherry, woolly blackberry
  Rubus tomentosus var. canescens Wirtg. -- not accepted -- woolly blackberry
  Rubus tomentosus var. tomentosus Borkh. -- not accepted -- woolly blackberry
  Rubus vulgaris Weihe & Nees -- accepted
  Rulac Adans. -- not accepted
  Rumex aquaticus L. -- accepted -- western dock
  Rumex scutatus L. -- accepted -- French sorrel
  Rumex vesicarius L. -- accepted
  Sagina X normaniana Lagerh. -- accepted
  Salix aegyptiaca L. -- accepted
  Salix excelsa S.G. Gmel. -- accepted
  Salix gilgiana Seemen -- accepted -- willow
  Salix glabra Scop. -- accepted
  Salix gracilistyla Miq. -- accepted -- rose-gold pussy willow
  Salix gracilistyla var. melanostachys (Makino) C.K. Schneid. -- accepted
  Salix koreensis Andersson -- accepted
  Salix koriyanagi Kimura ex Goerz -- accepted -- kori-yanagi
  Salix lanata L. -- accepted -- woolly willow
  Salix lapponum L. -- accepted -- downy willow, Lapland willow
  Salix mielichhoferi Saut. -- accepted
  Salix miyabeana Seemen -- accepted
  Salix muscina Dode ex Flod. -- accepted
  Salix myrsinites L. -- accepted -- myrtle willow
  Salix repens L. -- accepted -- creeping willow
  Salix rosmarinifolia L. -- accepted
  Salix rotundifolia Trautv. -- accepted -- least willow
  Salix udensis Trautv. & C.A. Mey. -- accepted
  Salix variegata Franch. -- accepted
  Salix X ambigua Ehrh. -- accepted
  Salix X cottetii Kern. -- not accepted -- Cottet willow, dwarf willow
  Salix X dichroa Döll -- accepted
  Salix X doniana Sm. -- accepted -- donian willow
  Salix X ehrhartiana Sm. (pro sp.) -- accepted -- Ehrhart's willow
  Salix X grahamii Borrer ex Baker -- accepted -- Graham's willow
  Salix X laestadiana Hartm. -- accepted
  Salix X mollissima Ehrh. -- accepted -- sharp-stipule willow
  Salix X pontederana Willd. -- accepted
  Salix X rubra Huds. -- accepted -- green-leaf willow
  Salix X seringeana Gaudin -- accepted -- Seringe willow
  Salix X simulatrix F.B. White -- accepted
  Salsola aphylla L. f. -- accepted -- lyebush
  Samadera indica Gaertn. -- accepted
  Sambucus palmensis Link -- accepted -- sauco
  Sambucus racemosa ssp. kamtschatica (E.L. Wolf) Hultén -- accepted -- red elder
  Sambucus racemosa ssp. sibirica (Nakai) H. Hara -- accepted
  Sambucus racemosa ssp. sieboldiana (Miq.) H. Hara -- accepted
  Sambucus racemosa var. arborescens (Torr. & A. Gray) A. Gray -- accepted -- Pacific red elder
  Sambucus racemosa var. melanocarpa (A. Gray) McMinn -- accepted -- black elderberry, red elderberry, Rocky Mountain elder
  Sambucus racemosa var. microbotrys (Rydb.) Kearney & Peebles -- accepted -- European red elderberry
  Samolus valerandi L. -- accepted -- seaside brookweed
  Sanguisorba albanica András. & Jáv. -- accepted
  Sanguisorba hybrida (L.) Nordborg -- accepted
  Sanguisorba minor Scop. -- accepted -- salad burnet, small burnet
  Sanguisorba minor ssp. magnolii (Spach) Briq. -- accepted
  Sanguisorba minor ssp. minor Scop. -- accepted
  Sanguisorba minor ssp. muricata (Spach ex Bonnier & Layens) Briq. -- accepted -- small burnet
  Sapindus trifoliatus L. -- accepted -- threeleaf soapberry
  Sarcocornia fruticosa (L.) A.J. Scott -- accepted -- shrubby swampfire
  Sarracenia X excellens G. Nicholson (pro sp.) -- not accepted -- pitcherplant
  Scabiosa caucasica M. Bieb. -- not accepted -- Caucasian pincushion flower
  Scabiosa palaestina L. -- not accepted
  Scabiosa stellata L. -- not accepted -- starflower pincushions
  Schefflera arboricola (Hayata) Merr. -- accepted
  Schefflera morototoni (Aubl.) Maguire, Steyerm. & Frodin -- accepted -- matchwood
  Schenkia Griseb. -- accepted
  Schenkia sebaeoides Griseb. -- accepted -- `awiwi, lavaslope centaury
  Schenkia spicata (L.) G. Mans. -- accepted -- spiked centaury
  Schinopsis balansae Engl. -- accepted -- quebracho
  Schinopsis haenkeana Engl. -- accepted
  Schinopsis quebracho-colorado (Schltdl.) F.A. Barkley & T. Mey. -- accepted -- red quebracho
  Schinus terebinthifolius var. rhoifolius (Mart.) Engl. -- accepted
  Schinziophyton rautanenii (Schinz) Radcl.-Sm. -- accepted -- manketti
  Schizolobium parahyba (Vell.) S.F. Blake -- accepted -- Brazilian firetree
  Schizolobium parahyba var. amazonicum (Huber ex Ducke) Barneby -- accepted
  Schizolobium parahyba var. parahyba (Vell.) S.F. Blake -- accepted
  Schleichera oleosa (Lour.) Oken -- accepted -- lac tree
  Sclerocarya birrea (A. Rich.) Hochst. -- accepted -- marula
  Sclerocarya birrea ssp. caffra (Sond.) Kokwaro -- accepted
  Sclerocarya caffra Sonder -- not accepted
  Searsia lancea (L. f.) F.A. Barkley -- accepted
  Secula hystrix (Poir.) Small -- not accepted
  Sedum diffusum S. Watson -- accepted
  Sedum forsterianum Sm. -- accepted
  Sedum rubrotinctum R.T. Clausen -- accepted
  Semecarpus anacardium L. f. -- accepted -- markingnut tree
  Semecarpus cassuvium Roxb. -- accepted
  Senna auriculata (L.) Roxb. -- accepted
  Senna fructicosa (Mill.) H.S. Irwin & Barneby -- accepted -- woody wild sensitive plant
  Senna racemosa (Mill.) H.S. Irwin & Barneby -- accepted -- limestone senna
  Sesbania cannabina (Retz.) Pers. -- accepted
  Severinia buxifolia (Poir.) Ten. -- accepted -- Chinese box-orange
  Shorea robusta C.F. Gaertn. -- accepted -- sal tree
  Shortia uniflora Maxim. -- accepted -- Nippon bells
  Sida stipulata Cav. -- not accepted -- stipule fanpetals
  Silene atropurpurea (Griseb.) Greuter & Burdet -- accepted
  Silene flos-jovis (L.) Greuter & Burdet -- accepted
  Silene inaperta L. -- accepted
  Silene montana S. Watson -- not accepted
  Silene nocturna L. -- accepted
  Silene rupestris L. -- accepted
  Silene secundiflora Otth -- accepted
  Silene uniflora Roth -- accepted -- sea campion
  Sison verticillato-inundata Thore -- not accepted
  Sium latifolium L. -- accepted -- wideleaf waterparsnip
  Skottsbergiliana partita H. St. John -- not accepted
  Smyrnium olusatrum L. -- accepted -- alexanders
  Sophia halictorum Cockerell -- not accepted
  Sorbaria tomentosa (Lindl.) Rehder -- accepted
  Sorbus aria (L.) Crantz -- accepted -- chess-apple, whitebeam
  Sorbus commixta Hedl. -- accepted
  Sorbus domestica L. -- accepted -- servicetree
  Sorbus X alpina (Willd.) Heynh. (pro sp.) -- not accepted
  Sorbus X thuringiaca (Ilse) Fritsch -- accepted -- mountain-ash
  Spathiger Small -- not accepted
  Sphaerocionium C. Presl -- not accepted
  Sphaerocionium hirsutum (L.) C. Presl -- not accepted
  Sphaerocionium sericeum (Sw.) C. Presl -- not accepted
  Sphenostylis stenocarpa (Hochst. ex A. Rich.) Harms -- accepted -- African yam bean
  Spiraea albiflora (Miq.) Zabel -- accepted
  Spiraea gemmata Zabel -- accepted
  Spiraea japonica var. bullata (Maxim.) Makino -- accepted
  Spiraea nipponica f. rotundifolia (G. Nicholson) Makino -- accepted
  Spiraea X arguta Zabel -- accepted -- garland spiraea
  Spondias indica (Wight & Arn.) Airy Shaw & Forman -- accepted -- mango
  Spondias tuberosa Arruda ex Kost. -- accepted -- imbu
  Stelechocarpus Hook. f. & Thomson -- accepted
  Stelechocarpus burahol (Blume) Hook. f. & Thomson -- accepted -- burahol
  Stellaria nemorum L. -- accepted -- wood stitchwort
  Stenocarpus sinuatus (A. Cunn.) Endl. -- accepted -- firewheeltree
  Stenostomum lucidum (Sw.) C.F. Gaertn. -- accepted
  Sterculia diversifolia G. Don -- not accepted
  Sterculia setigera Delile -- accepted
  Sterculia tragacantha Lindl. -- accepted -- sterculia
  Sterculia urens Roxb. -- accepted -- sterculia
  Sticherus owhyhensis (Hook.) Ching -- accepted
  Sticherus palmatus (W. Schaffn. ex E. Fourn.) Copel. -- not accepted
  Strelitzia nicolai Regel & Körn. -- accepted -- bird-of-paradise tree, white bird-of-paradise tree
  Strelitzia reginae Aiton -- accepted -- bird-of-paradise
  Striga hermonthica (Delile) Benth. -- accepted -- purple witchweed, witchweed
  Strychnos nux-vomica L. -- accepted -- strychnine tree
  Strychnos toxifera Schomb. ex Benth. -- accepted -- strychnine
  Stryphnodendron adstringens (Mart.) Coville -- accepted
  Styrax benzoides Craib -- accepted -- Siam benzoin
  Styrax benzoin Dryand. -- accepted -- styrax
  Styrax tonkinensis (Pierre) Craib ex Hartwich -- accepted -- Siam benzoin
  Suaeda vera Forssk. ex J.F. Gmel. -- accepted -- alkali seepweed
  Sutherlandia R. Br. -- not accepted
  Swietenia humilis Zucc. -- accepted
  Syagrus coronata (Mart.) Becc. -- accepted -- Ouricury palm
  Symphoricarpos X chenaultii Rehder -- accepted -- Chenault coralberry
  Symphytum uliginosum Kern. -- not accepted
  Synelcosciadium carmelii (Labill.) Boiss. -- accepted -- hogroot
  Synsepalum dulcificum (Schumach. & Thonn.) Daniell -- accepted -- miraculous berry
  Synsepalum stipulatum (Radlk.) Engl. -- accepted
  Syzygium aqueum (Burm. f.) Alston -- accepted -- watery roseapple
  Syzygium aromaticum (L.) Merr. & L.M. Perry -- accepted -- clove
  Syzygium eucalyptoides (F. Muell.) B. Hyland -- accepted -- eucalypt eugenia
  Tachigali Aubl. -- accepted
  Tachigali versicolor Standl. & L.O. Williams -- accepted
  Talisia pedicellaris Sagot ex Radlk. -- not accepted -- black moraballi
  Tamarix dioica Roxb. ex Roth -- accepted -- saltcedar, tamarisk, tamarix
  Tamarix stricta Boiss. -- accepted
  Taralea oppositifolia Aubl. -- accepted -- opposite taralea
  Telanthera olivacea Urb. -- not accepted
  Telfairia occidentalis Hook. f. -- accepted -- oysternut
  Telfairia pedata (Sm. ex Sims) Hook. -- accepted -- oysternut
  Teline linifolia (L.) Webb & Berthel. -- not accepted
  Tephrosia sinapou (Buc'hoz) A. Chev. -- accepted -- hoarypea
  Tephrosia vogelii Hook. f. -- accepted -- Vogel's tephrosia
  Terminalia buceras (L.) C. Wright -- accepted
  Terminalia molinetii M. Gómez -- accepted
  Terminalia sericea Burch. ex DC. -- accepted -- clusterleaf
  Terminalia superba Engl. & Diels -- accepted -- superb terminalia
  Tetragonolobus Scop. -- not accepted
  Tetrastigma pubinerve Merr. & Chun -- accepted
  Tetrastigma voinieranum (Baltet) Pierre ex Gagnep. -- accepted -- chestnut vine
  Thalictrum squarrosum Stephan ex Willd. -- accepted
  Theobroma angustifolium Moc. & Sessé ex DC. -- accepted -- theobroma
  Theobroma bicolor Humb. & Bonpl. -- accepted -- theobroma
  Theobroma grandiflorum (Willd. ex Spreng.) K. Schum. -- accepted -- theobroma
  Theobroma mammosum Cuatrec. & J. León -- accepted -- theobroma
  Theobroma simiarum Donn. Sm. -- accepted -- theobroma
  Thorella verticillato-inundata (Thore) Briq. -- not accepted
  Tilia X flavescens A. Braun ex Döll -- accepted
  Tilia X moltkei Spath ex C.K. Schneid. -- accepted
  Tournefortia caribaea (A. DC.) Griseb. -- accepted
  Tournefortia syringaefolia Vahl -- not accepted
  Tournefortia syringifolia Vahl -- not accepted
  Trapa bicornis Osbeck -- accepted -- horn nut
  Treculia africana Decne. ex Trécul -- accepted -- African breadfruit
  Trema Lour. -- accepted
  Trema floridanum Britton -- not accepted
  Trema micrantha (L.) Blume -- accepted -- Jamaican nettletree
  Trema micranthum (L.) Blume -- not accepted -- Florida trema, Jamaican nettletree
  Trichilia emetica Vahl -- accepted
  Trichilia roka (Forssk.) Chiov. -- not accepted -- trichilia
  Trichocentrum carthagenense (Jacq.) M.W. Chase & N.H. Williams -- accepted
  Trichomanes crinitum Sw. -- accepted
  Trichomanes elegans Rich. -- accepted
  Trichomanes fimbriatum Backh. ex T. Moore -- accepted
  Trichomanes hirsutum L. -- not accepted
  Trichomanes osmundoides DC. ex Poir. -- accepted
  Trichomanes trigonum Desv. -- accepted
  Trichomanes trigonum var. fimbriatum (Backh. ex T. Moore) Proctor -- not accepted
  Trifolium africanum Ser. -- accepted -- African clover
  Trifolium rueppellianum Fresen. -- accepted -- Rueppell's clover
  Trifolium semipilosum Fresen. -- accepted -- Kenya clover
  Trifolium suffocatum L. -- accepted -- suffocated clover
  Trifolium uniflorum L. -- accepted -- oneflower clover
  Triplaris americana L. -- accepted
  Tristaniopsis laurina (Sm.) Peter G. Wilson & J.T. Waterh. -- accepted -- water-gum
  Tristellateia australasiae Rich. -- accepted
  Triumfetta cordifolia A. Rich. -- accepted -- cordleaf burbark, cordleaf burrbark
  Triumfetta tomentosa Bojer -- accepted -- tomentose burbark, tomentose burrbark
  Tropaeolum minus L. -- accepted -- dwarf nasturtium
  Tropaeolum peltophorum Benth. -- accepted -- shield nasturtium
  Tropaeolum tuberosum Ruiz & Pav. -- accepted -- anu
  Turnera angustifolia Mill. -- not accepted -- narrowleaf yellow alder
  Tylosema (Schweinf.) Torre & Hillc. -- accepted
  Tylosema esculentum (Burch.) A. Schreib. -- accepted
  Ugni molinae Turcz. -- accepted -- Chilean guava
  Ulex minor Roth -- accepted -- dwarf gorse
  Ulmus villosa Brandis ex Gamble -- accepted -- cherry-bark elm, marn elm
  Ulmus X hollandica Mill. -- accepted -- Dutch elm, Holland elm
  Urera obovata Benth. -- accepted -- urera
  Urostachys Herter -- not accepted
  Urostachys hippurideus (Christ) Herter ex Nessel -- not accepted
  Urostachys hippurideus var. hippurideus (Christ) Herter ex Nessel -- not accepted
  Urostachys hippurideus var. montanus (Underw. & F.E. Lloyd) Herter ex Nessel -- not accepted
  Urostachys pithyoides (Schltdl. & Cham.) Herter -- not accepted
  Valeriana scouleri Rydb. -- not accepted -- Scouler's valerian
  Valeriana sitchensis ssp. scouleri (Rydb.) F.G. Mey. -- accepted
  Valeriana sitchensis ssp. uliginosa (Torr. & A. Gray) F.G. Mey. -- accepted -- marsh valerian, valériane de Sitka sous-espčce des tourbičres
  Valeriana uliginosa (Torr. & A. Gray) Rydb. -- not accepted -- mountain valerian
  Valerianella eriocarpa Desv. -- accepted -- Italian cornsalad
  Valerianella locusta (L.) Laterr. -- accepted -- Lewiston cornsalad
  Vantanea Aubl. -- accepted
  Vasconcellea A. St.-Hil. -- accepted
  Vasconcellea monoica (Desf.) A. DC. -- accepted
  Vasconcellea pubescens A. DC. -- accepted
  Vasconcellea quercifolia A. St.-Hil. -- accepted
  Vateria indica L. -- accepted -- white dammar
  Verbascum pyramidatum M. Bieb. -- accepted
  Vernicia cordata (Thunb.) Airy Shaw -- accepted -- Japanese tungoil tree
  Veronica alpina L. -- accepted -- alpine speedwell
  Veronica campylopoda Boiss. -- accepted -- bent-foot speedwell
  Veronica gentianoides Vahl -- accepted
  Veronica opaca Fr. -- accepted -- broadsepal speedwell
  Viburnum burejaeticum Regel & Herder -- accepted
  Viburnum carlesii Hemsl. -- accepted
  Viburnum farreri Stearn -- accepted -- Culver's root
  Viburnum hupehense Rehder -- accepted
  Viburnum japonicum (Thunb.) Spreng. -- accepted
  Viburnum lantana var. glabratum Chabert -- not accepted
  Viburnum odoratissimum Ker Gawl. -- accepted -- sweet arrowwood
  Viburnum opulus var. sargentii (Koehne) Takeda -- accepted
  Viburnum rafinesqueanum Schult. -- accepted -- downy arrowwood
  Viburnum schensianum Maxim. -- accepted
  Viburnum X burkwoodii Burkwood & Skipwith -- accepted
  Viburnum X rhytidophylloides J.V. Suringar -- accepted
  Vicia ervilia (L.) Willd. -- accepted -- blister vetch
  Vicia filicaulis Webb & Berthel. -- accepted
  Vicia fulgens Batt. -- accepted -- scarlet vetch
  Vicia hyrcanica Fisch. & C.A. Mey. -- accepted -- vetch
  Vicia palaestina Boiss. -- accepted -- vetch
  Vicia sativa ssp. nigra (L.) Ehrh. -- accepted -- common vetch, garden vetch, slimleaf vetch, vetch
  Vicia sativa ssp. segetalis (Thuill.) Celak. -- not accepted
  Vicia sativa var. angustifolia (L. ex Reichard) Wahlenb. -- not accepted -- garden vetch, narrow-leaved vetch
  Victoria amazonica (Poepp.) J.C. Sowerby -- accepted -- Amazon water-lily
  Victoria cruziana A.D. Orb. -- accepted -- Santa Cruz water-lily
  Vigna aconitifolia (Jacq.) Maréchal -- accepted -- moth bean
  Vigna caracalla (L.) Verdc. -- accepted -- snailflower
  Vigna minima (Roxb.) Ohwi & H. Ohashi -- accepted -- cowpea
  Vigna radiata (L.) R. Wilczek -- accepted -- mung bean
  Vigna radiata var. radiata (L.) R. Wilczek -- accepted -- mung bean
  Vigna radiata var. sublobata (Roxb.) Verdc. -- accepted -- mung bean
  Vigna subterranea (L.) Verdc. -- accepted -- bambarra groundnut
  Vigna umbellata (Thunb.) Ohwi & H. Ohashi -- accepted -- rice bean
  Viola mirabilis L. -- accepted -- wonder violet
  Virola calophylla (Spruce) Warb. -- accepted
  Virola calophylloidea Markgr. -- accepted
  Virola elongata (Benth.) Warb. -- accepted
  Virola sebifera Aubl. -- accepted
  Virola theiodora (Spruce ex Benth.) Warb. -- not accepted
  Vitellaria paradoxa C.F. Gaertn. -- accepted -- shea butter
  Vitis vinifera ssp. sylvestris (C.C. Gmel.) Hegi -- accepted -- wild grape
  Washingtonia robusta H. Wendl. -- accepted -- Mexican fan palm, Washington fan palm, Washingtonia colorada
  Weigela japonica Thunb. -- accepted
  Wikstroemia elliptica Merr. -- accepted
  Withania somnifera (L.) Dunal -- accepted -- withania
  Woodsia mexicana Fée -- accepted
  X Amelasorbus jackii Rehder -- accepted -- Jack's amelasorbus
  X Citroncirus webberi J.W. Ingram & H.E. Moore -- accepted -- citrange
  X Mahoberberis neubertii (hort. ex Lem.) C.K. Schneid. -- accepted
  X Sorbaronia alpina (Willd.) C.K. Schneid. -- accepted -- alpine sorbaronia
  X Sorbaronia sorbifolia (Poir.) C.K. Schneid. -- accepted -- sorbaronia
  Xanthoceras sorbifolium Bunge -- accepted
  Xylocarpus moluccensis (Lam.) M. Roem. -- accepted
  Xylophylla angustifolia Sw. -- not accepted
  Xylopia aethiopica (Dunal) A. Rich. -- accepted -- Ethiopian pepper
  Xylopia frutescens Aubl. -- accepted -- pimientillo
  Zamia spiralis Salisb. -- not accepted
  Zanthoxylum simulans Hance -- accepted -- Chinese-pepper, Sichuan-pepper
  Zeltnera arizonica (A. Gray) G. Mans. -- accepted -- Arizona centaury
  Zeltnera beyrichii (Torr. & A. Gray) G. Mans. -- accepted -- mountain pink, quinineweed, rock centaury
  Zeltnera davyi (Jeps.) G. Mans. -- accepted -- Davy's centaury
  Zeltnera muehlenbergii (Griseb.) G. Mans. -- accepted -- June centaury, Muhlenberg's centaury
  Zeltnera namophila (Reveal, C.R. Broome & Beatley) G. Mans. -- accepted -- spring-loving centaury
  Zeltnera venusta (A. Gray) G. Mans. -- accepted -- charming centaury
  Ziziphus jujuba Mill. -- accepted
  Ziziphus lotus (L.) Lam. -- accepted -- lotus jujube, lotus tree
  Ziziphus nummularia (Burm. f.) Wight & Arn. -- accepted -- jujube
  Zornia brasiliensis Vogel -- accepted
  Zornia dyctiocarpa DC. -- accepted
   

A gray bar