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Source: Tropicos, 2007 - 2011, database (version 2011)

ITIS records citing this source
 Kingdom Plantae
  Abrodictyum rigidum (Sw.) Ebihara & Dubuisson -- accepted -- stiff bristle fern
  Abutilon glabriflorum Hochr. -- accepted
  Abutilon mauritianum (Jacq.) Medik. -- accepted
  Abutilon pauciflorum A. St.-Hil. -- accepted
  Abutilon pictum (Gillies ex Hook. & Arn.) Walp. -- accepted -- painted Indian mallow
  Abutilon striatum Dicks. ex Lindl. -- not accepted -- redvein Indian mallow
  Acacia abyssinica Hochst. ex Benth. -- accepted
  Acacia abyssinica ssp. calophylla Brenan -- accepted
  Acacia lanuginophylla R.S. Cowan & Maslin -- accepted
  Acacia lebbeck (L.) Willd. -- not accepted
  Acacia macracanthoides Bertero ex DC. -- not accepted
  Acalypha glechomaefolia A. Rich. -- accepted
  Acalypha havanensis Müll. Arg. -- accepted
  Acalypha reptans Sw. -- accepted
  Acanthopanax (Decne. & Planch.) Miq. -- not accepted
  Acer californicum (Torr. & A. Gray) D. Dietr. -- not accepted
  Acer floridanum var. acuminatum Trel. -- not accepted
  Acer negundo var. mexicanum (DC.) Kuntze -- accepted
  Acer neo-mexicanum Greene -- not accepted
  Acer rugelii Pax -- not accepted
  Acer saccharophorum K. Koch -- not accepted
  Achariaceae -- accepted
  Achyranthes aquatica R. Br. -- not accepted
  Achyranthes bettzichiana (Regel) Standl. -- not accepted
  Achyranthes canescens R. Br. -- accepted
  Achyranthes ficoidea ssp. bettzichiana (Regel) Baker -- not accepted
  Achyranthes ingramiana Standl. -- not accepted
  Acicarpha tribuloides Juss. -- accepted -- madam gorgon
  Acisanthera erecta Gleason -- not accepted
  Aconogonum alaskanum (W. Wight ex Hultén) Soják -- not accepted
  Aconogonum alaskanum var. glabrescens (Hultén) H.R. Hinds -- not accepted
  Aconogonum alpinum (All.) Schur -- not accepted
  Aconogonum davisiae (W.H. Brewer ex A. Gray) Soják -- not accepted
  Aconogonum davisiae var. glabrum (G.N. Jones) S.P. Hong -- not accepted
  Aconogonum hultenianum (Yurtsev) Tzvelev -- not accepted
  Aconogonum hultenianum var. lapathifolium (Cham. & Schltdl.) S.P. Hong -- not accepted
  Aconogonum newberryi (Small) Soják -- not accepted
  Aconogonum phytolaccifolium (Meisn. ex Small) Small ex Rydb. -- not accepted
  Aconogonum phytolaccifolium var. glabrum S.P. Hong -- not accepted
  Aconogonum polystachyum (Wall. ex Meisn.) Haraldson -- not accepted
  Acorus americanus (Raf.) Raf. -- accepted -- belle-angélique, sweet-flag, sweetflag
  Acorus calamus var. americanus Raf. -- not accepted
  Acrostichum citrifolium L. -- not accepted
  Acrostichum crinitum L. -- not accepted
  Acrostichum digitatum L. -- not accepted
  Acrostichum serratifolium Mert. ex Kaulf. -- not accepted
  Acrostichum thalictroides L. -- not accepted
  Actinostachys digitata (L.) Wall. -- accepted
  Acuan illinoensis (Michx.) Kuntze -- not accepted
  Adenocalymma obovatum Urb. -- not accepted
  Adhatoda carthaginensis (Jacq.) Nees -- not accepted
  Adiantopsis pedata (Hook.) T. Moore -- accepted
  Adiantopsis radiata (L.) Fée -- accepted
  Adiantopsis rupicola Maxon -- accepted
  Adiantum deltoideum Sw. -- accepted
  Adiantum guianense Aubl. -- not accepted
  Adiantum lucidum (Cav.) Sw. -- accepted
  Adiantum lunulatum Burm. f. -- accepted
  Adiantum philippense L. -- not accepted
  Aeschynomene sensitiva var. hispidula Rudd -- accepted -- sensitive jointvetch
  Aesculus buckleyi (Sarg.) Bush -- not accepted
  Aesculus flava Sol. -- accepted
  Aethionema saxatile (L.) R. Br. -- accepted
  Aetoxylon (Airy Shaw) Airy Shaw -- accepted
  Aetoxylon sympetalum (Steenis & Domke) Airy Shaw -- accepted
  Agalinis laevigata (Raf.) S.F. Blake -- not accepted
  Agialid Adans. -- not accepted
  Aiouea densiflora Nees -- not accepted
  Aiouea laevis (Mart.) Kosterm. -- accepted
  Alchemilla filicaulis var. denudata Buser -- not accepted
  Alchemilla minor Huds. -- not accepted
  Alchemilla sericata Rchb. -- accepted
  Alchimilla Mill. -- not accepted
  Alchornea glandulosa var. floribunda Benth. -- not accepted
  Alcmene Urb. -- not accepted
  Alcmene tobagensis Urb. -- not accepted
  Alectra capensis Thunb. -- accepted
  Allophylus holophyllus Radlk. -- accepted
  Allophylus ternatus (J.R. Forst. & G. Forst.) Radlk. -- accepted
  Allophylus zeylanicus L. -- accepted
  Alnus americana (Regel) Czerepan. -- not accepted
  Alstonia scholaris (L.) R. Br. -- accepted
  Alternanthera achyranthes Forssk. -- accepted
  Alternanthera bettzichiana (Regel) Voss -- not accepted -- calicoplant
  Alternanthera echinocephala (Hook. f.) Christoph. -- accepted -- seaurchin joyweed
  Alternanthera ingramiana (Standl.) Schinz -- accepted
  Alternanthera repens (L.) J.F. Gmel. -- not accepted
  Alyssum montanum L. -- accepted -- mountain madwort
  Amaranthus chihuahuensis S. Watson -- accepted -- Chihuahuan amaranth
  Amelanchier ovalis Medik. -- accepted
  Amorpha apiculata Wiggins -- accepted
  Amphicarpa Elliott ex Nutt. -- not accepted
  Amphicarpa bracteata (L.) Fernald -- not accepted
  Amyxa Tiegh. -- accepted
  Amyxa pluricornis (Radlk.) Domke -- accepted
  Anadenanthera falcata (Benth.) Speg. -- not accepted
  Anagallis arvensis ssp. foemina (Mill.) Schinz & Thell. -- not accepted -- poorman's weatherglass
  Anagallis foemina Mill. -- accepted -- poorman's weatherglass
  Ananthacorus Underw. & Maxon ex Maxon -- not accepted
  Anaxagorea A. St.-Hil. -- accepted
  Anaxagorea acuminata (Dunal) A. DC. -- accepted
  Anchusa cruciata Cham. -- not accepted
  Andira racemosa Lam. ex J. St.-Hil. -- not accepted
  Andrachne L. -- accepted -- maidenbush
  Andrachne telephioides L. -- accepted
  Andrographis paniculata (Burm. f.) Wall. ex Nees -- accepted
  Anechites asperuginis (Sw.) Griseb. -- not accepted
  Anemone multifida var. richardsiana Fernald -- not accepted -- Richards' anemone
  Anemopaegma carrerense Arm. -- not accepted
  Anemopaegma karstenii Bureau & K. Schum. -- accepted
  Anemopaegma tobagense Urb. -- not accepted
  Angelica laurentiana Fernald -- accepted -- angélique du Saint-Laurent, St. Lawrence angelica, st. lawrence angelica
  Aniba firmula (Nees & Mart.) Mez -- accepted
  Aniba guianensis Aubl. -- accepted
  Anisacanthus juncea (Torr.) Hemsl. -- accepted
  Aniseia martinicensis var. ambigua Hallier f. -- accepted -- whitejacket
  Aniseia uniflora (Burm. f.) Choisy -- not accepted
  Annona hexapetala L. f. -- not accepted
  Annona mucosa Jacq. -- accepted
  Annona palustris L. -- not accepted
  Annona triloba L. -- not accepted
  Anoda hastata Cav. -- not accepted
  Anona obovata Willd. -- not accepted
  Anredera spicata J. F. Gmelin -- not accepted
  Antidaphne viscoidea Poepp. & Endl. -- accepted
  Antigonon flavescens S. Watson -- accepted -- lovechain
  Antiphytum cruciatum (Cham.) DC. -- accepted
  Antirhea borbonica J.F. Gmel. -- accepted
  Antrophyum plantagineum (Cav.) Kaulf. -- accepted
  Apeiba schomburgkii Szyszyl. -- accepted
  Apeiba tibourbou Aubl. -- accepted
  Aphanes microcarpa (Boiss. & Reut.) Rothm. -- accepted -- slender parsley piert
  Aphelandra incerta Leonard -- not accepted
  Aphelandra pulcherrima (Jacq.) Kunth -- accepted
  Aquilaria caudata (Gilg) Hallier f. -- not accepted
  Aquilaria grandiflora Benth. -- not accepted
  Aquilaria khasiana Hallier f. -- accepted
  Aquilaria moszkowskii Gilg -- not accepted
  Aquilaria secundaria Rumph. ex DC. -- not accepted
  Aquilaria tomentosa Gilg -- not accepted
  Arabis arenicola (Richardson ex Hook.) Gelert -- not accepted -- sand rockcress
  Arabis breweri var. austinae (Greene) Rollins -- not accepted -- Chico Creek rockcress
  Arachniodes aspidioides Blume -- accepted
  Arachniodes carvifolia (Kunze) Ching -- accepted -- East Indian hollyfern
  Aragallus hudsonicus Greene -- not accepted
  Aralia capitata Jacq. -- not accepted
  Arceuthobium oxycedri (DC.) M. Bieb. -- accepted
  Ardisia escallonioides Schltdl. & Cham. -- accepted -- island marlberry
  Arenaria pungens Nutt. -- not accepted
  Argentacer Small -- not accepted
  Aristolochia oblongata sensu Pfeifer -- not accepted
  Aristolochia rotunda L. -- accepted
  Aristolochia rugusa Lam. -- not accepted
  Aristolochia surinamensis Willd. -- accepted
  Armeria maritima ssp. interior (Raup) Lefebvre & Vekem. -- not accepted
  Armeria maritima ssp. interior (Raup) A.E. Porsild -- accepted -- interior seapink
  Aronia alnifolia Nutt. -- not accepted
  Aronia floribunda (Lindl.) Sweet -- not accepted
  Arrabidaea rego (Vell.) DC. -- accepted
  Artabotrys odoratissima R. Br. ex Ker Gawl. -- not accepted
  Arthrostemma fragile Lindl. -- not accepted -- fragile pinkfringe
  Asarum naniflorum (H.L. Blomq.) Pfeifer -- not accepted
  Asclepias glaucescens Kunth -- accepted -- nodding milkweed
  Asclepias maritima Jacq. -- not accepted
  Asclepias nivea var. curassavica (L.) Kuntze -- not accepted
  Aspalatus ebenus L. -- not accepted
  Asplenium fragile C. Presl -- not accepted
  Asplenium peruvianum Desv. -- accepted
  Asplenium X plenum E.P. St. John ex Small (pro sp.) -- not accepted
  Astragalus astragalinus (Hook.) Á. Löve & D. Löve -- not accepted
  Astragalus astragalinus (DC.) E. Sheld. -- not accepted
  Astragalus capillipes M.E. Jones -- not accepted
  Astragalus engelmanni E. Sheld. -- not accepted
  Astragalus lentiginosus var. mcdougallii (Sheldon) M.E. Jones -- not accepted
  Astragalus lentiginosus var. toyabensis Barneby -- not accepted
  Astripomoea grantii (Rendle) Verdc. -- accepted
  Astripomoea hyoscyamoides (Vatke) Verdc. -- accepted
  Athyriopsis japonica (Thunb.) Ching -- not accepted
  Athyriopsis japonicum (Thunb.) Ching -- not accepted
  Athyrium distentifolium Tausch ex Opiz -- not accepted
  Athyrium japonicum (Thunb.) Copel. -- not accepted
  Atragene alpina L. -- not accepted
  Atriplex gmelini var. zosterifolia (Hook.) Moq. -- not accepted
  Atriplex saccaria var. cornuta (M.E. Jones) S.L. Welsh -- accepted -- flathorn orach
  Atriplex sibirica L. -- accepted -- Siberian saltbush
  Aureolaria laevigata (Raf.) Raf. -- not accepted -- entireleaf yellow false foxglove
  Averrhoa L. -- accepted
  Bacopa stricta (Schrad.) Wettst. ex Edwall -- accepted
  Badiera penaea (L.) DC. -- accepted
  Barringtonia racemosa Roxb. -- not accepted
  Bassia albescens Griseb. -- not accepted
  Batocydia unguis (L.) Mart. ex Britton -- not accepted
  Beckwithia glacialis (L.) Á. Löve & D. Löve -- not accepted
  Begonia humilis Aiton -- accepted
  Begonia ulmifolia Willd. -- accepted
  Benzoin aestivale Nees -- not accepted
  Berteroa obliqua (Sm.) DC. -- accepted
  Berula thunbergii (DC.) H. Wolff -- not accepted
  Beta vulgaris ssp. cicla (L.) W.D.J. Koch -- accepted -- chard
  Betula alnus var. glutinosa L. -- not accepted
  Betula glutinosa (L.) Lam. -- not accepted
  Betula rugosa (Du Roi) Ehrh. -- not accepted
  Betula X caerulea var. cunninghamii Boivin (pro nm.) -- accepted -- Cunningham's birch
  Betula X dugleana Lepage -- accepted -- Dugle's birch
  Betula X uliginosa Dugle -- accepted -- birch
  Bignonia aequinoctialis L. -- not accepted
  Bignonia pallida Lindl. -- not accepted
  Bignonia paniculata L. -- not accepted
  Bignonia pyramidata Rich. -- not accepted
  Bignonia rego Vell. -- not accepted
  Bignonia serratifolia Vahl -- not accepted
  Bignonia uncata Andrews -- not accepted
  Biophytum dendroides (Kunth) DC. -- accepted
  Bolbitis fluviatilis (Hook.) Ching -- accepted
  Bolbitis heudelotii (Bory ex Fée) Alston -- accepted
  Bolbitis serratifolia (Mert. ex Kaulf.) Schott -- accepted
  Bonaveria Scop. -- not accepted
  Bonellia stenophylla (Urb.) B. Stĺhl & Källersjö -- accepted
  Bontia germinans L. -- not accepted
  Boussingaultia Kunth -- not accepted
  Braunsia Schwantes -- accepted
  Braunsia apiculata (Kensit) L. Bolus -- accepted
  Brysonima coriacea (Sw.) DC. -- not accepted
  Brysonima horneana Britton & Small -- not accepted
  Brysonima X ophiticola Small ex Britton -- not accepted
  Bursa rubella (Reut.) Druce -- not accepted
  Bursera odorata Brandegee -- not accepted
  Caesalpinia atropunctata Eifert -- not accepted
  Calamintha ilicifolia A. Gray -- not accepted
  Calathea lutea (Aubl.) Schult. -- accepted -- pampano
  Calceolaria angustiflora Ruiz & Pav. -- accepted
  Calceolaria multiflora Cav. -- not accepted -- slipper flower
  Callitriche autumnalis L. -- not accepted
  Callitriche nuttallii Torr. -- not accepted -- Nuttall's waterstarwort
  Calothyrsus californica Spach -- not accepted
  Caltha obtusa Cheeseman -- accepted
  Calycera balsamitifolia Rich. -- accepted -- balsam-leaf calycera
  Calycogonium DC. -- accepted -- angleflower
  Camissonia dentata (Cav.) Reiche -- accepted
  Canangium odoratum (Lam.) Baill. ex King -- not accepted
  Capparidastrum Hutch -- accepted
  Capparis cartilaginea Decne. -- accepted
  Capparis tenuisiliqua Jacq. -- accepted
  Carolinea insignis Sw. -- not accepted
  Caropsis (Rouy & E.G. Camus) Rauschert -- accepted
  Carpobrotus aequilaterus (Haw.) N.E. Br. -- not accepted
  Casparea congesta Britton & Rose -- not accepted
  Casparea jermyana Britton -- not accepted
  Castalia leibergii Morong -- not accepted
  Castilleja kuschei Eastw. -- accepted -- Kusche's Indian paintbrush
  Castilleja muelleri Pennell -- not accepted -- Kluane Lake Indian paintbrush
  Castilleja setosa Pennell -- accepted
  Caulanthus heterophyllus var. pseudosimulans R.E. Buck -- not accepted -- San Diego wild cabbage
  Celastrus gemmatus Loes. -- not accepted -- Chinese bittersweet
  Celosia paniculata L. -- not accepted
  Celosia tomentosa Willd. -- not accepted
  Centropogon C. Presl -- accepted
  Centropogon cornutus (L.) Druce -- accepted
  Centropogon surinamensis (L.) C. Presl -- not accepted -- deer meat
  Centrostachys aquatica (R. Br.) Wall. -- accepted
  Centunculus L. -- not accepted
  Cephalanthus chinensis Lam. -- not accepted
  Cerastium alpinum ssp. lanatum (Lam.) Ces. -- accepted
  Cerastium fontanum ssp. scandicum H. Gartner -- not accepted -- common chickweed
  Cerastium gracile Dufour -- accepted -- slender chickweed
  Ceratoides Gagnebin -- not accepted -- winterfat
  Ceratophytum brachycarpum Pittier -- not accepted
  Ceratophytum tobagense (Urb.) Sprague & Sandwith -- accepted
  Ceratopteris gaudichaudii Brongn. -- not accepted
  Cercidium spinosum Tul. -- not accepted
  Ceropegia intermedia Wight -- accepted
  Ceropegia mayottae H. Huber -- not accepted
  Ceropegia peulhorum A. Chev. -- accepted
  Ceterach Willd. -- not accepted
  Chaenarrhinum (DC.) Rchb. -- not accepted
  Chaenarrhinum minus (L.) Lange -- not accepted
  Chaenorrhinum (DC.) Rchb. -- not accepted
  Charpentiera australis Sohmer -- accepted
  Cheilanthes marginata Kunth -- not accepted
  Cheilanthes pyramidalis Fée -- not accepted
  Chenopodium album ssp. amaranticolor H.J. Coste & A. Reyn. -- not accepted -- lambsquarters
  Chenopodium nuttalliae Saff. -- not accepted
  Chenopodium olidum W.M. Curtis -- not accepted
  Chenopodium strictum ssp. striatum (Krasan) Aellen & Iljin -- not accepted -- lateflowering goosefoot
  Choenomeles Lindl. -- not accepted -- flowering quince
  Choenomeles japonica (Thunb.) Lindl. ex Spach -- not accepted -- lesser flowering quince
  Choenomeles lagenaria (Loisel.) Koidz. -- not accepted
  Choenomeles speciosa (Sweet) Nakai -- not accepted -- Japanese flowering quince
  Cibotium cumingii Kunze -- accepted
  Ciclospermum Lag. -- not accepted -- ciclospermum
  Ciclospermum ammi Lag. -- not accepted
  Ciclospermum leptophyllum (Pers.) Sprague ex Britton & P. Wilson -- not accepted -- marsh parsley
  Ciclospermum nodiflorum (L.) W.D.J. Koch -- not accepted
  Cimicifuga cordifolia Pursh -- not accepted
  Cinnamomum cassia (L.) D. Don -- accepted
  Cinnamomum cassia Nees ex Blume -- not accepted
  Cinnamomum mexicanum (Meisn.) Kosterm. -- not accepted -- Mexican cinnamon
  Cinnamomum sessilifolium Kaneh. -- accepted -- cinnamon
  Cinnamomum tamala (Buch.-Ham.) T. Nees & Eberm. -- accepted -- Indian bark
  Cinnamomum triplinerve (Ruiz & Pav.) Kosterm. -- accepted
  Cissus tuberculata Jacq. -- not accepted -- West Indian treebine
  Clematis alpina (L.) Mill. -- accepted -- alpine virginsbower
  Clematis caracasana DC. -- not accepted
  Clusia poeppigiana Engl. -- accepted
  Cnemidaria grandifolia (Willd.) Proctor -- not accepted
  Cnemidaria spectabilis (Kunze) R.M. Tryon -- not accepted
  Cnidoscolus bellator (Ekman ex Urb.) León -- accepted
  Cnidoscolus hamosus Pohl -- accepted
  Cnidoscolus matosii León -- accepted
  Coccocypselum herbaceum Aubl. -- accepted -- yerba de guava
  Cochlospermum gossypium (L.) DC. -- not accepted
  Colubrina greggii var. yucatanensis M.C. Johnst. -- not accepted -- Yucatan nakedwood
  Combretum microphyllum Klotzsch -- accepted
  Combretum paniculatum ssp. microphyllum (Klotzsch) Wickens -- not accepted -- flame keeper
  Condalia mexicana Schltdl. -- accepted -- Mexican bluewood
  Conimitella Rydb. -- accepted
  Convolvulus trifidus Kunth -- not accepted
  Convolvulus uniflorus Burm. f. -- not accepted
  Copaifera langsdorfii Desf. -- not accepted -- Langsdorf's copaifera
  Cordia panamensis L. Riley -- accepted -- hairy lay-lay
  Cordia schomburgkii DC. -- accepted
  Cordia tobagensis Urb. -- not accepted
  Cordia tobagensis var. broadwayi Urb. -- not accepted
  Coriospermum villosum Rydb. -- not accepted
  Cotoneaster pyracantha (L.) Spach -- not accepted
  Cowania D. Don -- not accepted
  Crassula sarcocaulis Eckl. & Zeyh. -- accepted
  Crataegus arbutifolia Lam. -- accepted
  Crataegus paludosa Sarg. -- accepted -- hawthorn
  Crataegus robinsonii Sarg. -- accepted -- Robinson's hawthorn
  Crataegus X densiflora Sarg. (pro sp.) -- not accepted -- denseflower hawthorn
  Crataegus X kingstonensis Sarg. (pro sp.) -- not accepted -- Kingston's hawthorn
  Craterostigma pumilum Hochst. -- accepted
  Crescentia latifolia Mill. -- not accepted
  Crossosoma californica Nutt. -- not accepted
  Crotalaria berteriana DC. -- not accepted -- Berteron's rattlebox
  Croton cerinus Müll. Arg. -- accepted
  Croton craspedotrichus Griseb. -- accepted
  Croton heteropleurus Urb. -- not accepted
  Croton monogynus Urb. -- accepted
  Croton origanifolius Lam. -- accepted
  Croton sagraeanus Müll. Arg. -- accepted
  Croton setigerus Hook. -- not accepted -- dove weed
  Croton viminalis Griseb. -- accepted
  Crotonopsis Michx. -- not accepted
  Cryptantha milobakeri I.M. Johnst. -- not accepted
  Cyanea crispihirta E. Wimm. -- not accepted
  Cyathea affinis A. Rojas -- not accepted
  Cyathea alutacea (Kunze) Domin -- accepted
  Cyathea balanocarpa D.C. Eaton -- accepted
  Cyathea brevistipes R.C. Moran -- not accepted
  Cyathea canaliculata Willd. -- not accepted
  Cyathea circumdentata K.U. Kramer -- not accepted
  Cyathea cubensis Underw. ex Maxon -- accepted
  Cyathea glauca E. Fourn. -- not accepted
  Cyathea grandifolia Willd. -- accepted
  Cyathea insignis D.C. Eaton -- accepted
  Cyathea longipes Alderw. -- not accepted
  Cyathea lunulata (G. Forst.) Copel. -- accepted -- tsatsa
  Cyathea mettenii H. Karst. -- accepted
  Cyathea retanae A. Rojas -- accepted
  Cyathea spectabilis (Kunze) Domin -- accepted
  Cyathea subindusiata var. subindusiata Domin -- accepted
  Cyathea tenuis Brause -- not accepted
  Cyathea X wilsonii (Hook.) Domin -- accepted
  Cyclamen repandum var. baborense Debussche & Quézel -- accepted
  Cyclosorus subpubescens (Blume) Ching -- accepted
  Cycnium tubulosum (L. f.) Engl. -- accepted
  Cycnium tubulosum ssp. montanum (N.E. Br.) O.J. Hansen -- not accepted
  Cynanchum lineare (Bello) Alain -- not accepted -- West Indian swallow-wort
  Cynanchum nigrum (L.) Pers. -- not accepted -- black swallowwort, climbing milkweed, Louis' swallow-wort
  Cynanchum palmeri (S. Watson) Shinners -- not accepted
  Cynomorium cayennense Sw. -- not accepted
  Cyrtandra gracilis Hillebr. -- not accepted -- haiwale
  Cyrtandra umbracculiflora Rock -- not accepted
  Dalbergia hildebrandtii var. scorpioides (Baker) Bosser & R. Rabev. -- accepted
  Dalbergia perrieri Jum. -- not accepted
  Dalbergia perrieri Drake -- not accepted
  Dalbergia retusa Baill. -- not accepted
  Dalbergia sericea Bojer -- not accepted
  Dalea carthaginensis (Jacq.) J.F. Macbr. -- not accepted
  Dalea carthaginensis var. carthagenensis (Jacq.) J.F. Macbr. -- not accepted
  Dalea carthaginensis var. floridana (Rydb.) Barneby -- not accepted
  Dalea carthaginensis var. portoricana Barneby -- not accepted
  Dasistoma laevigata (Raf.) Chapm. -- not accepted
  Davallia uncinella Kunze -- not accepted
  Delphinium tenuisectum Greene -- accepted -- carrotleaf larkspur
  Dendrocnide latifolia (Gaudich.) Chew -- accepted
  Dendropemon caribaeum Krug & Urb. -- not accepted
  Dendrosicus Raf. -- not accepted
  Dennstaedtia dissecta (Sw.) T. Moore -- accepted
  Dennstaedtia flaccida (G. Forst.) Bernh. -- accepted
  Dentaria L. -- not accepted
  Deparia japonica (Thunb.) M. Kato -- accepted -- Japanese false spleenwort
  Desmochaeta prostrata (L.) DC. -- not accepted
  Desmodium axillare var. obtusifolium (Kuntze) Urb. -- not accepted
  Dialium guianense (Aubl.) Sandwith -- accepted
  Dianthera androsaemifolia (Nees) Griseb. -- not accepted
  Dianthera pectoralis (Jacq.) Murray -- not accepted
  Dianthera secunda (Vahl) Griesb. -- not accepted
  Dicranopteris linearis (Burm. f.) Underw. -- accepted -- Old World forkedfern, uluhe
  Didymopanax Decne. & Planch. -- not accepted
  Didymopanax attenuatus (Sw.) Marchal -- not accepted
  Dimorphocarpa wislizenii (Engelm.) Rollins -- not accepted
  Diodella radula (Willd. ex Roem. & Schult.) Delprete -- accepted
  Diodella sarmentosa (Sw.) Bacigalupo & E.L. Cabral -- accepted
  Diodella teres (Walter) Small -- accepted
  Diodia serrulata (P. Beauv.) G. Taylor -- accepted -- seaside buttonweed
  Dioscorea glauca Muhl. ex L.C. Beck -- not accepted
  Diospyros blancoi A. DC. -- accepted -- mabolo
  Diospyros digyna Jacq. -- accepted -- black sapote
  Diospyros discolor Willd. -- not accepted
  Diospyros dycorypheoides H. Perrier -- accepted
  Diospyros ferrea (Willd.) Bakh. -- accepted
  Diospyros hemiteles I. Richardson -- accepted
  Diospyros philippensis (Desr.) Gürke -- not accepted
  Diospyros sandwicensis (A. DC.) Fosberg -- accepted -- lama
  Diospyros sinensis Hemsl. -- not accepted
  Diospyros virginiana var. pubescens Nutt. -- not accepted
  Dipentodon Dunn -- accepted
  Dipholis A. DC. -- not accepted -- bustic
  Diplazium japonicum (Thunb.) Bedd. -- not accepted
  Diplazium kaalanum (Copel.) C. Chr. -- not accepted
  Diplazium limbatum (Willd.) Proctor -- not accepted
  Diplopterygium glaucum (Thunb. ex Houtt.) Nakai -- accepted
  Discocalyx megacarpa Merr. -- accepted
  Distictella broadwayana Urb. -- not accepted
  Distictella magnoliifolia (Kunth) Sandwith -- accepted
  Distictella racemosa (Bureau & K. Schum.) Urb. -- not accepted
  Distictis racemosa Bureau & K. Schum. -- not accepted
  Distictis robinsoni J.R. Johnst. -- not accepted
  Ditaxis brandegei (Millsp.) Rose & Standl. -- not accepted
  Dolichandra unguis-cati (L.) L.G. Lohmann -- accepted -- catclaw vine, claw vine
  Downingia cuspidata (Greene) Rattan -- accepted
  Doxantha unguiscati (L.) Miers -- not accepted
  Draba eurycarpa A. Gray -- not accepted
  Draba glabella var. brachycarpa (Rupr.) Fernald -- not accepted -- smooth whitlowgrass
  Draba glabella var. pycnosperma (Fernald & C.H. Knowlt.) C.H. Mulligan -- not accepted -- drave glabre variété ŕ graines imbriquées
  Draba hirta var. brachycarpa Rupr. -- not accepted
  Draba laurentiana Fernald -- not accepted -- St. Lawrence whitlowgrass
  Draba nivalis var. canadica O.E. Schulz -- not accepted -- Canadian whitlowgrass
  Draba norvegica var. sornborgeri (Fernald) B. Boivin -- not accepted
  Draba sornborgeri Fernald -- not accepted
  Drymaria gracilis Cham. & Schltdl. -- accepted -- slender drymary
  Dryopteris cordata (Fée) Urb. -- not accepted
  Dryopteris pedata (Desv.) Kuntze -- not accepted
  Drypetes nitida Kaneh. -- accepted
  Drypetes rotensis Kaneh. -- accepted
  Drypetes vitiensis Croizat -- accepted
  Duguetia A. St.-Hil. -- accepted
  Duguetia tobagensis (Urb.) R.E. Fr. -- accepted
  Duranta fletcherana Moldenke -- not accepted
  Durio zibethinus Murray -- accepted -- durian
  Dussia Krug & Urb. ex Taub. -- accepted
  Dussia discolor (Benth.) Amshoff -- accepted
  Dysphania schraderiana (Schult.) Mosyakin & Clemants -- accepted
  Echinus L. Bolus -- not accepted
  Echinus apiculatus (Kensit) L. Bolus -- not accepted
  Echinus trisulcus Lour. -- not accepted
  Echites asperuginis Sw. -- not accepted
  Echites hirsuta Rich. -- not accepted
  Echites hirsutus Rich. -- not accepted
  Echites quinquangularis Jacq. -- not accepted
  Echites scholaris L. -- not accepted
  Echites subsagittata Ruiz & Pav. -- not accepted
  Echites subsagittatus Ruiz & Pav. -- not accepted
  Echites tomentosa Vahl -- not accepted
  Echites tomentosus Vahl -- not accepted
  Echium coincyanum Lacaita -- accepted -- smallstamen viper's bugloss, smallstamen vipersbugloss
  Elaphoglossum cubense (Mett. ex Kuhn) C. Chr. -- accepted
  Elaphoglossum lingua (C. Presl) Brack. -- accepted
  Elaphoglossum muscosum (Sw.) T. Moore -- accepted
  Elaphoglossum spathulatum (Bory) T. Moore -- not accepted -- Antilles tonguefern
  Elaphoglossum spatulatum (Bory) T. Moore -- accepted -- Antilles tonguefern
  Elaphrium fagaroides Kunth -- not accepted
  Elaphrium microphylla (A. Gray) Rose -- not accepted
  Elatostema calcareum Merr. -- accepted
  Elatostema grandifolium Reinecke -- accepted
  Endiandra elaeocarpa Gillespie -- accepted
  Ensete ventricosum (Welw.) Cheeseman -- accepted -- Abyssinian banana
  Enslenia albida Nutt. -- not accepted
  Epilobium alsinifolium Vill. -- accepted -- water plantain willowherb
  Epilobium X treleasianum H. Lév. -- accepted
  Equisetum giganteum L. -- accepted -- giant horsetail
  Equisetum ramosissimum Desf. -- not accepted -- branched scouringrush
  Eremocarpus Benth. -- not accepted
  Eremolepis Griseb. -- not accepted
  Eriogonum carolinae Reveal -- not accepted
  Eriogonum diabolis Reveal -- not accepted
  Eriogonum hastatum Wiggins -- accepted
  Eriogonum hooveri Reveal -- not accepted
  Eriogonum latifolium ssp. deductum (Greene) S. Stokes -- not accepted
  Eriogonum saltuarium Reveal -- not accepted
  Eriogonum welshii Reveal -- not accepted
  Eschweilera Mart. ex DC. -- accepted
  Eschweilera decolorans Sandwith -- accepted
  Eucnide urens (Parry ex A. Gray) Parry -- accepted -- desert rock nettle, desert stingbush, stingbush
  Eugenia margarettae Alain -- not accepted
  Euphorbia paniculata Desf. -- accepted
  Euphorbia paniculata Elliott -- not accepted
  Euphorbia platyphylla L. -- not accepted
  Euphorbia X pseudoesula Schur -- accepted
  Euphrasia frigida var. obtusata (Jřrg.) Callen -- not accepted
  Euphrasia frigida var. submollis (Jřrg.) Callen -- not accepted
  Euphrasia purpurea Desf. -- accepted
  Euphrasia X aspera Callen -- not accepted
  Euphrasia X vestita Callen -- not accepted -- eyebright
  Euphrasia X villosa Callen -- not accepted -- villous eyebright
  Eurotia Adans. -- not accepted
  Eurystemon mexicanum (S. Watson) Alexander -- not accepted
  Euxolus viridis (L.) Moq. -- not accepted
  Evolvulus alsinoides var. angustifolius Torr. -- accepted -- dwarf morningglory, slender dwarf morning-glory
  Evolvulus argenteus Pursh -- not accepted
  Evonymus cuneifolia C. Wright -- not accepted
  Eysenhardtia polystachya (Ortega) Sarg. -- accepted -- kidneywood, Mexican kidneywood
  Fagonia californica Benth. -- accepted
  Feea Bory -- not accepted
  Ficaria verna Huds. -- not accepted
  Ficus broadwayi Urb. -- not accepted
  Ficus godeffroyi Warb. -- accepted -- fig
  Ficus grenadensis Warb. -- not accepted
  Ficus hartii Warb. -- not accepted
  Ficus natalensis Hochst. -- accepted
  Ficus thonningii Blume -- accepted -- Chinese banyan
  Ficus tobagensis Urb. -- not accepted
  Ficus triangularis Warb. -- not accepted
  Ficus yoponensis Desv. -- accepted
  Filicium Thwaites ex Benth. & Hook. f. -- accepted
  Filicium decipiens (Wight & Arn.) Thwaites -- accepted
  Fioria vitifolia (L.) Mattei -- accepted -- tropical fanleaf
  Flemingia grandiflora Roxb. ex Rottler -- not accepted
  Fleurya Gaudich. -- not accepted
  Fluggea Willd. -- not accepted
  Fluggea virosa (Roxb. ex Willd.) Baill. -- not accepted
  Fraxinus trifoliata (Torr.) F.H. Lewis & Epling -- not accepted
  Froelichia interrupta (L.) Moq. -- accepted -- Texas snake-cotton, Texas snakecotton
  Fuchsia andrei I.M. Johnst. -- accepted -- Andre's fuchsia
  Fuchsia canescens Benth. -- accepted
  Fuchsia vulcanica André -- not accepted -- Volcan's fuchsia
  Galarhoeus Haw. -- not accepted
  Gale Duhamel -- not accepted
  Galeobdolon Adans. -- accepted
  Galium boreale ssp. septentrionale (Roem. & Schult.) Iltis -- not accepted
  Galvezia Dombey ex Juss. -- accepted
  Gardenia angusta Merr. -- not accepted -- Cape jasmine
  Gardenia augusta Merr. -- not accepted
  Geranium strigosum Burm. f. -- accepted
  Gerardia laevigata Raf. -- not accepted
  Gerrardina Oliver -- accepted
  Gerrardina eylesiana Milne-Redh. -- accepted
  Gerrardina foliosa Oliv. -- accepted
  Gesneria palustris hort. ex Regel -- not accepted
  Ghinia Schreb. -- not accepted
  Gilia parvula Rydb. -- not accepted
  Gilia splendens Douglas ex H. Mason & A.D. Grant -- not accepted -- grand gilia
  Glandularia quadrangulata (A. Heller) Umber -- accepted -- beaked mock vervain
  Glecoma L. -- not accepted
  Glecoma hederacea L. -- not accepted
  Gleichenia furcata (L.) Spreng. -- not accepted
  Gleichenia glauca (Thunb. ex Houtt.) Hook. -- not accepted
  Gleichenia linearis (Burm. f.) C.B. Clarke -- not accepted
  Glycine abrus L. -- not accepted
  Glycine bracteata L. -- not accepted
  Gomphrena vermicularis L. -- not accepted
  Gonolobus carolinensis (Jacq.) R. Br. ex Schult. -- not accepted
  Gonolobus martinicensis Decne. -- accepted
  Gonolobus scandens Urb. -- not accepted
  Gonolobus tobagensis Urb. -- accepted
  Gonystylus affinis var. affinis Radlk. -- accepted
  Gonystylus affinis var. elegans Airy Shaw -- accepted
  Gonystylus beccarianus Tiegh. -- not accepted
  Gonystylus hackenbergii Diels -- not accepted
  Gonystylus macrocarpus C.T. White -- accepted
  Gonystylus obovatus Merr. -- not accepted
  Gonystylus punctatus A.C. Sm. -- accepted
  Gonystylus sympetala Steenis & Domke -- not accepted
  Gonystylus warburgianus Gilg ex Domke -- accepted
  Gossypium lapideum Tussac -- not accepted
  Grammadenia Benth. -- not accepted
  Grevea Baill. -- accepted
  Grevea bosseri Letouzey -- accepted
  Grevea eggelingii Milne-Redh. -- accepted
  Grevea madagascariensis Baill. -- accepted
  Guaiacum L. -- accepted -- lignum-vitae
  Guaiacum angustifolium Engelm. -- accepted -- Texas lignum-vitae
  Guaiacum guatemalense Planch. ex Rydb. -- not accepted
  Guaiacum officinale L. -- accepted -- lignum vitae, lignum-vitae
  Guaiacum sanctum L. -- accepted -- holywood, roughbark lignumvitae
  Guaiacum unijugum Brandegee -- accepted
  Guajacum L. -- not accepted -- lignum-vitae, lignumvitae
  Guajacum angustifolium Engelm. -- not accepted -- guayacan, Texas lignum-vitae
  Guajacum officinale L. -- not accepted -- lignum-vitae
  Guajacum sanctum L. -- not accepted -- holywood
  Guazuma tomentosa Kunth -- not accepted
  Guettarda scabra (L.) Lam. -- not accepted
  Gypsophila stevenii Fisch. ex Schrank -- accepted -- Steven's babysbreath
  Haemadictyon exsertum A. DC. -- not accepted
  Haemadictyon venosum Lindl. -- not accepted
  Halimolobos perplexa (L.F. Hend.) Rollins -- not accepted -- perplexed halimolobos
  Halimolobos perplexa var. lemhiensis C.L. Hitchc. -- not accepted -- Lemhi halimolobos
  Halimolobos perplexa var. perplexa (L.F. Hend.) Rollins -- not accepted -- perplexed halimolobos
  Hanguana malayana (Jack.) Merr. -- accepted
  Hedeoma apiculatum W.S. Stewart -- not accepted -- McKittrick pennyroyal
  Helosis Rich. -- accepted
  Helosis cayennensis (Sw.) Spreng. -- accepted
  Hemianthus Nutt. -- not accepted
  Hemionitis plantaginea Cav. -- not accepted
  Hemitelia R. Br. -- not accepted
  Hemitelia hostmanii Hook. -- not accepted
  Henriettella Naudin -- not accepted
  Heteropteris wydlerana A. Juss. -- not accepted
  Heterotrichum DC. -- not accepted
  Hibiscadelphus wilderanus Rock -- not accepted
  Hibiscus roeatus H. St. John -- not accepted
  Hibiscus vitifolius L. -- not accepted -- tropical rose mallow
  Hoffmanseggia Cav. -- not accepted
  Hoffmanseggia drepanocarpa A. Gray -- not accepted
  Hoffmanseggia glauca (Ortega) Eifert -- not accepted
  Hoffmanseggia oxycarpa Benth. -- not accepted
  Hoffmanseggia repens (Eastw.) Cockerell -- not accepted
  Hoffmanseggia tenella Tharp & L.O. Williams -- not accepted -- slender rush-pea
  Holographis virgata (Harv. ex Benth. & Hook. f.) T.F. Daniel -- accepted -- white devilbush
  Holosteum cordata L. -- not accepted
  Huertea Ruíz & Pavón -- accepted
  Huperzia aqualupiana (Spring) Rothm. -- accepted -- treetrunk clubmoss
  Huperzia funiformis (Cham. ex Spring) Trevis. -- accepted -- royal 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 venenata Gaertn. -- accepted
  Hydrocotyle erecta L. f. -- not accepted
  Hydrocotyle lineata Michx. -- not accepted
  Hydrocotyle vulgaris L. -- accepted
  Hygrophila angustifolia R. Br. -- not accepted
  Hygrophila auriculata (Schumach.) Heine -- accepted
  Hygrophila salicifolia (Vahl) Nees -- not accepted
  Hymenodium Fée -- not accepted
  Hymenolobus Nutt. -- not accepted
  Hymenophyllum contortum Bosch -- not accepted
  Hymenophyllum fendlerianum J.W. Sturm -- accepted -- twisted filmy fern
  Hymenophyllum tunbridgense (L.) Sm. -- not accepted
  Hypericum buckleii M.A. Curtis -- not accepted -- Buckley's St. Johnswort
  Hypogon verticillatus (Baldw.) House -- not accepted
  Hypogon verticillatus Raf. -- not accepted
  Hypolepis punctata (Thunb.) Mett. -- not accepted -- dotted beadfern
  Hypolepis tenuifolia (G. Forst.) Bernh. -- accepted
  Ibatia muricata Griseb. -- not accepted
  Icacorea Aubl. -- not accepted
  Ilysanthes Raf. -- not accepted
  Incarvillea grandiflora (Thunb.) Spreng. -- not accepted
  Indigofera micheliana Rose -- accepted
  Ipomoea carolina L. -- accepted
  Ipomoea cuneifolia Meisn. -- accepted
  Ipomoea jaegeri Pilg. -- accepted -- morningglory
  Ipomoea muricata Cav. -- not accepted
  Ipomoea trifida (Kunth) G. Don -- accepted -- threefork morningglory
  Ipomopsis tridactyla (Rydb.) S.L. Welsh -- not accepted -- Cedar Breaks gilia
  Isoetes hyemalis D.F. Brunt. -- accepted -- evergreen quillwort
  Isotoma (R. Br.) Lindl. -- not accepted
  Ixora acuminata Roxb. -- accepted -- bola de nieve
  Jacquemontia pentantha (Jacq.) G. Don -- not accepted -- skyblue clustervine
  Jacquemontia pentanthos (Jacq.) G. Don -- accepted -- skyblue clustervine
  Jacquinia barbasco Mez -- not accepted
  Jacquinia stenophylla Urb. -- not accepted -- thicketwood
  Jaquinia L. -- not accepted -- jaguinias
  Jaquinia aborea Vahl -- not accepted
  Jaquinia berteri Spreng. -- not accepted
  Jaquinia keyensis Mez -- not accepted -- joewood
  Jaquinia stenophylla Urb. -- not accepted
  Jaquinia umbellata A. DC. -- not accepted
  Jonopsidium Rchb. -- not accepted
  Jonopsidium acaule (Desf.) Rchb. -- not accepted
  Julocroton Mart. -- not accepted
  Juncus marginatus var. biflorus (Elliott) Chapm. -- not accepted
  Jussiaea L. -- not accepted
  Jussiaea grandiflora Ruiz & Pav. -- not accepted
  Jussiaea michauxiana Fernald -- not accepted
  Jussiaea palustris G. Mey. -- not accepted
  Justica paniculata Burm. f. -- not accepted
  Justicia carthaginensis Jacq. -- not accepted
  Justicia secunda Vahl -- accepted
  Justicia spicata Ruiz & Pav. -- not accepted
  Justicia veracruzana T.F. Daniel -- accepted
  Kalanchoe grandiflora Wall. ex Wight & Arn. -- accepted
  Kaliphora Hook. f. -- accepted
  Kaliphora madagascariensis Hook. f. -- accepted
  Lachnanthes caroliana (Lam.) Dandy -- not accepted
  Lagenaria siceraria ssp. asiatica (Kobiakova) Heiser -- not accepted
  Laguna Cav. -- not accepted
  Lamium album var. maculatum L. -- not accepted
  Lantana fucata Lindl. -- accepted
  Laportea cuneata (A. Rich.) Chew -- accepted -- weedy woodnettle
  Laportea ruderalis (G. Forst.) Chew -- accepted
  Lathyrus longipes T.G. White -- not accepted -- longstem peavine
  Lathyrus whitei Kupicha -- accepted
  Laurus cinnamomum L. -- not accepted
  Laurus persea L. -- not accepted
  Lavoisiera itambana DC. -- accepted
  Lemmonia A. Gray -- not accepted
  Lendneria Minod -- not accepted
  Leontice triphylla Sm. -- not accepted
  Leonurus cardiaca ssp. villosus (Desf. ex Spreng.) Hyl. -- not accepted -- common motherwort
  Leonurus cardiaca var. villosus (Desf. ex Spreng.) Benth. -- not accepted
  Lepidagathis Willd. -- accepted
  Lepidium aucheri Boiss. -- accepted -- Aucher's pepperwort
  Leptosiphon melingii (Wiggins) J.M. Porter & L.A. Johnson -- accepted
  Leucophyllum zygophyllum I.M. Johnst. -- accepted -- cimmeron
  Lewisia leana (Porter) B.L. Rob. -- not accepted
  Lindernia verticillata (Mill.) Britton -- not accepted
  Lindsaea guianensis (Aubl.) Dryand. -- accepted
  Linociera holdridgii Camp & Monach. -- not accepted
  Linociera lingustrina (Sw.) Sw. -- not accepted
  Linum lewisii ssp. lepagei (B. Boivin) Mosquin -- not accepted
  Linum perenne var. lepagei (B. Boivin) B. Boivin -- not accepted
  Litsea cubeba (Lour.) Pers. -- accepted
  Lobelia calycina Cham. -- not accepted
  Lobelia crispa (Gaudich.) Endl. -- not accepted
  Lonchitis tenuifolia G. Forst. -- not accepted
  Lopezia racemosa Cav. -- accepted
  Lucuma valenzuelana A. Rich. -- not accepted
  Ludwigia longifolia (DC.) H. Hara -- accepted -- longleaf primrose-willow
  Lupinus argenteus var. argentatus (Rydb.) Barneby -- not accepted
  Lupinus arizonicus ssp. lagunensis (M.E. Jones) J. Christian & D.B. Dunn -- accepted -- Arizona lupine
  Lupinus bartolomei M.E. Jones -- accepted
  Lupinus greenei A. Heller -- not accepted
  Lupinus lagunensis M.E. Jones -- not accepted
  Lupinus latifolius ssp. canadensis (C.P. Sm.) D.B. Dunn -- accepted
  Lupinus latifolius var. canadensis C.P. Sm. -- not accepted
  Lupinus sparsiflorus var. insignitus C.P. Sm. -- not accepted
  Lychnis alpina f. albiflora (Lange) Fernald -- not accepted
  Lychnis alpina var. americana Fernald -- not accepted -- American campion
  Lycopodium appressum (Desv.) Petrovic -- not accepted
  Lycopodium reflexum (P. Beauv.) Sw. -- not accepted
  Lycopus uniflorus var. ovatus Fernald & H. St. John -- accepted -- northern bugleweed
  Lygodium cubense Kunth -- accepted
  Lygodium volubile Sw. -- accepted
  Lythrum vulneraria Aiton ex Schrank -- accepted
  Macadamia ternifolia F. Muell. -- accepted
  Macairea DC. -- accepted
  Macairea lasiophylla (Benth.) Wurdack -- accepted
  Macfadyena uncata (Andrews) Sprague & Sandwith -- accepted
  Macroscepis hirsuta (Vahl) Schltr. -- not accepted -- rattan
  Maerua subcordata (Gilg) DeWolf -- accepted
  Maesa carolinensis Mez -- accepted
  Magnolia liliifera var. obovata (Korth.) Govaerts -- not accepted
  Magnolia X soulangiana Soul.-Bod. -- not accepted -- Chinese magnolia
  Malache scabra (K. Presl) Kuntze -- not accepted
  Malache scabra B. Vogel -- not accepted
  Malcolmia graeca Boiss. & Spruner -- accepted -- Malcolm stock
  Mallotus paniculatus (Lam.) Müll. Arg. -- accepted
  Malus domestica Borkh. -- not accepted
  Malva assurgentiflora (Kellogg) M.F. Ray -- accepted -- island mallow
  Malvastrum hispidum (Pursh) Hochr. -- accepted -- hispid false mallow
  Mandevilla hirsuta (Rich.) K. Schum. -- accepted -- savannah flower
  Mandevilla subsagittata (Ruiz & Pav.) Woodson -- accepted
  Manihot dulcis (J.F. Gmel.) Baill. -- not accepted
  Maranta lutea Aubl. -- not accepted
  Marantochloa cuspidata (Roscoe) Milne-Redh. -- accepted -- marantochloa
  Marantochloa ramosissima (Benth.) Hutch. -- accepted -- marantochloa
  Marcgravia tobagensis Urb. -- accepted
  Marsdenia dussii Schltr. -- accepted
  Marsdenia macrophylla (Humb. & Bonpl. ex Schult.) E. Fourn. -- accepted
  Marsdenia maculata Hook. -- not accepted
  Marsilea natans L. -- not accepted
  Martinella obovata (Kunth) Bureau & K. Schum. -- accepted
  Mastichodendron (Engl.) H.J. Lam -- not accepted
  Matayba oppositifolia (A. Rich.) Britton -- accepted
  Matelea hirsuta (Vahl) Woodson -- accepted
  Matelea pringlei (A. Gray) Woodson -- accepted -- Pringle's milkvine
  Maughania strobilifera (L.) J. St.-Hil. ex Kuntze -- not accepted
  Maurandya wislizenii Engelm. ex A. Gray -- not accepted
  Meibomia Heist. ex Fabr. -- not accepted
  Melilotus neapolitana Ten. -- not accepted
  Melilotus sulcata Desf. -- not accepted
  Mellichampia A. Gray -- not accepted
  Mentzelia gracilis (Rydb.) H.J. Thomps. & F.H. Lewis -- not accepted
  Mentzelia gracilis Urb. & Gilg. -- not accepted
  Metalepis peraffinis (Woodson) Morillo -- accepted
  Metastelma suberosum Griseb. -- not accepted
  Mezoneuron kavaiense (H. Mann) Hillebr. -- not accepted
  Micromeria Benth. -- accepted
  Micropyxis Duby -- not accepted
  Mimulus fremontii var. vandenbergensis D.M. Thomps. -- accepted -- Vandenberg monkeyflower
  Mimulus luteus L. -- accepted -- blood-drop emlets, monkey musk, yellow monkey-flower
  Mimulus ringens var. albiflora House -- not accepted
  Mollinedia Ruiz & Pav. -- accepted
  Mollinedia laurina Tul. -- not accepted
  Mollinedia ovata Ruiz & Pav. -- accepted
  Mollugo berteriana Ser. -- not accepted
  Mollugo berteroana Ser. -- not accepted
  Monarda fistulosa var. longepetiolata B. Boivin -- accepted
  Monarda fistulosa var. mahuexii B. Boivin -- accepted
  Monarda maritima (Cory) Correll -- accepted
  Montia fontana ssp. variabilis Walters -- not accepted -- variable minerslettuce
  Montia funstonii Rydb. -- not accepted
  Montinia Thunb. -- accepted
  Montinia acris L. f. -- accepted
  Montinia caryophyllacea Thunb. -- accepted
  Montinia frutescens Harv. & Sond. -- not accepted
  Montinia fruticosa Gaertn. -- accepted
  Montiniaceae -- accepted
  Musa ornata Roxb. -- accepted
  Myrcia margarettae (Alain) Alain -- accepted -- Margarett's myrcia
  Myrica holdrigeana Lundell -- not accepted
  Myrodia turbinata Sw. -- not accepted
  Nama macrantha (Choisy) Brand -- not accepted
  Nama macranthum (Choisy) Brand -- not accepted -- royal fiddleleaf
  Nama serpylloides A. Gray ex Hemsl. -- accepted -- velvet fiddleleaf
  Nama serpylloides var. velutinum C.L. Hitchc. -- not accepted
  Nama stenophyllum A. Gray ex Hemsl. -- not accepted -- slimpod fiddleleaf
  Nama undulata Kunth -- accepted -- whitewhisker fiddleleaf
  Nama undulata var. macrantha Choisy -- accepted
  Nectandra martinicensis Mez -- accepted
  Negundo Boehm. -- not accepted
  Negundo mexicanum DC. -- not accepted
  Nelumbium Juss. -- not accepted
  Nelumbium pentapetalum (Walter) Willd. -- not accepted
  Nelumbo pentapetala (Walter) Willd. -- not accepted
  Neowawraea Rock -- not accepted
  Nephelea pubescens (Mett. ex Kuhn) R.M. Tryon -- not accepted
  Nertera Banks & Sol. ex Gaertn. -- accepted
  Nevrodium Fée -- not accepted
  Nothofagus dombeyi (Mirb.) Oerst. -- accepted -- coigue
  Nothofagus obliqua (Mirb.) Oerst. -- accepted -- roble beech
  Notholaena candida (M. Martens & Galeotti) Hook. -- accepted
  Notholaena schaffneri (E. Fourn.) Underw. ex Davenp. -- accepted
  Nuphar luteum (L.) Sm. -- not accepted
  Nuphar luteum var. luteum (L.) Sm. -- not accepted
  Nymphaea blanda G. Mey. -- not accepted -- waterlily
  Nymphaea micrantha Guill. & Perr. -- accepted
  Nymphaea pentapetalum Walter -- not accepted
  Oberna Adans. -- accepted
  Oberna multifida (Adams) Ikonn. -- accepted
  Ochroma bicolor Rowlee -- not accepted
  Ochroma obtusa Rowlee -- not accepted
  Ocotea foetens (Aiton) Baill. -- accepted
  Odontites serotina (Lam.) Dumort. -- not accepted
  Odontosoria jenmanii Maxon -- accepted
  Oenothera bifrons Lindl. -- accepted
  Ophioglossum lusitanicum L. -- accepted -- least adder's-tongue
  Orchidocarpum parviflorum Michx. -- not accepted
  Oreopanax Decne. & Planch. -- accepted
  Oreopanax capitatus (Jacq.) Decne. & Planch. -- accepted
  Oreopanax dussi Krug & Urb. ex Duss -- not accepted
  Orobanche multicaulis var. palmeri Munz -- accepted
  Otholobium glandulosum (L.) J.W. Grimes -- accepted
  Oxalis macrocarpa (Small) R. Knuth -- accepted -- sorrel
  Oxalis nelsonii (Small) R. Knuth -- accepted -- sorrel
  Oxalis regnellii Miq. -- not accepted -- sorrel
  Oxalis spiralis G. Don -- accepted -- spiral sorrel
  Oxalis triangularis A. St.-Hil. -- accepted
  Oxytropis hudsonica (Greene) Fernald -- not accepted
  Oxytropis leucantha (Pallas) Pers. -- not accepted
  Oxytropis nigrescens ssp. arctobia (Bunge) Hultén -- not accepted
  Oxytropis nigrescens var. arctobia (Bunge) A. Gray -- not accepted
  Oxytropis viscida var. hudsonica (Greene) Barneby -- not accepted -- oxytropis visqueux variété de l'Hudsonie
  Pachyptera alliacea (Lam.) A.H. Gentry -- not accepted
  Pachystachys riedeliana Nees -- not accepted
  Padus virginiana (L.) Mill. -- not accepted
  Pallasia Klotzsch -- not accepted
  Panax attenuatus Sw. -- not accepted
  Paragonia pyramidata (Rich.) Bureau -- accepted
  Parkinsonia praecox (Ruiz & Pav. ex Hook.) J. Hawkins -- accepted
  Parochetus africanus Polhill -- accepted
  Passiflora alata Curtis -- accepted
  Passiflora berteriana Balb. ex DC. -- not accepted
  Passiflora caeruleo-racemosa Sabine -- not accepted -- passionflower
  Passiflora serrato-digitata L. -- not accepted
  Pavonia scabra (B. Vogel) Cif. -- not accepted
  Pavonia typhalaea L. -- not accepted
  Pedicularis labradorica var. sulphurea Hultén -- not accepted -- Labrador lousewort
  Pellaea sagittata (Cav.) Link -- accepted
  Peltapteris Link -- not accepted
  Penstemon campanulatus var. chihuahuensis (Straw) B.L. Turner -- accepted
  Peperomia dextrilaeva H. St. John -- not accepted
  Persea americana var. guatemalensis (L.O. Williams) Scora -- not accepted
  Persea americana var. nubigena (L.O. Williams) L.E. Kopp. -- not accepted
  Persea schiedeana Nees -- accepted -- coyo
  Petenaea Lundell -- accepted
  Petenaea cordata Lundell -- accepted
  Petrogenia I.M. Johnst. -- not accepted
  Phacelia vossii N.D. Atwood -- accepted -- Voss' phacelia
  Phaseolus polystachyus (L.) Britton, Sterns & Poggenb. -- not accepted
  Phellandrium L. -- not accepted
  Philoxerus R. Br. -- accepted
  Phlox acuminata Pursh -- accepted
  Phoradendron berterianum (DC.) Griseb. -- not accepted
  Photinia serrulata Lindl. -- not accepted
  Phyllitis Hill -- not accepted
  Phyllitis scolopendrium (L.) Newman -- not accepted
  Phyllodes lutea (Aubl.) Kuntze -- not accepted
  Piaropus Raf. -- not accepted
  Pilea grandifolia Blume -- accepted
  Piper asperifolium Ruiz & Pav. -- not accepted
  Piper caracasanum Bredem. ex Link -- not accepted
  Piper guahamense C. DC. -- accepted
  Piper guayranum C. DC. -- not accepted
  Piper humile Mill. -- not accepted
  Piper lambeauense C. DC. -- accepted
  Piper mornicola C. DC. -- accepted
  Piper obliquum Ruiz & Pav. -- accepted
  Piper saltuum C. DC. -- not accepted
  Piper scabrum Lam. -- not accepted
  Piper trigonum C. DC. -- accepted
  Piptadenia falcata Benth. -- not accepted
  Pipturus argenteus (G. Forst.) Wedd. -- accepted
  Piriqueta caroliniana var. tomentosa Urb. -- not accepted
  Pittosporum floccosum (Hillebr.) Sherff -- not accepted
  Plantago krajinai Pilg. -- not accepted
  Platanus californica Benth. -- not accepted
  Platanus glabrata Fernald -- not accepted
  Platanus hybridus Brot. -- not accepted
  Plectranthus rotundifolius (Poir.) Spreng. -- accepted
  Plectranthus scutellarioides (L.) R. Br. -- accepted
  Pleodendron costaricense N. Zamora, Hammel & Aguilar -- accepted
  Pleopeltis revoluta Alderw. -- accepted
  Plumeria acutifolia Poir. -- not accepted
  Plumeria tricolor Ruiz & Pav. -- not accepted
  Polybotrya Humb. & Bonpl. ex Willd. -- accepted
  Polycnemum verrucosum Láng -- accepted -- warty needleleaf
  Polygala arenicola Gürke -- accepted
  Polygala serpyllifolia Hosé -- accepted -- heath milkwort
  Polygala watsoni Chod. -- not accepted
  Polygonum arenarium Waldst. & Kit. -- accepted -- European knotweed
  Polygonum bellardii All. -- accepted -- narrowleaf knotweed
  Polygonum franktonii S.J. Wolf & McNeill -- accepted -- Nova Scotia knotweed
  Polygonum glabrum sensu Cham. & Schltdl. -- not accepted
  Polygonum humifusum C. Merck ex K. Koch -- accepted -- Alaska knotweed
  Polygonum paronychioides C.A. Mey. -- accepted
  Polypodium evectum G. Forst. -- not accepted
  Polystemma guatemalense (Schltr.) W.D. Stevens -- accepted -- arborescente rattan
  Polystichopsis (J. Sm.) Holttum -- not accepted
  Polystichum muricatum (L.) Fée -- accepted -- West Indian hollyfern
  Polytaenium Desv. -- not accepted
  Pontederia rotundifolia L. f. -- accepted -- tropical pickerelweed
  Poponax macracantha (Humb. & Bonpl. ex Willd.) Killip -- not accepted
  Poponax macracanthoides (Bertero ex DC.) Britton & Rose -- not accepted
  Populus rouleauana B. Boivin -- not accepted
  Potentilla anomalifolia M. Peck -- not accepted
  Pothomorphe Miq. -- not accepted
  Pouteria dictyoneura ssp. dictyoneura (Griseb.) Radlk. -- accepted -- cocuyo
  Premna serratifolia L. -- accepted
  Prestonia exserta (A. DC.) Standl. -- accepted
  Prestonia quinquangularis (Jacq.) Spreng. -- accepted
  Prestonia tobagensis Urb. -- not accepted
  Primula baileyana Kingdon-Ward -- accepted
  Proboscidea parviflora ssp. sinaloensis (Van Eselt.) Bretting -- accepted -- doubleclaw
  Prunus demissa (Nutt.) D. Dietr. -- not accepted
  Pseuderanthemum praecox (Benth.) Leonard -- accepted -- night and afternoon
  Pseudocalymma alliaceum (Lam.) Sandwith -- not accepted
  Pseudocalymma macrocarpum (Donn. Sm.) Sandwith -- not accepted
  Pseudocalymma sagotii (Bureau & K. Schum.) Sandwith -- not accepted
  Psoralea glandulosa L. -- not accepted
  Psoralea lupinellus Michx. -- not accepted
  Pteridium aquilinum var. decompositum (Gaudich.) R.M. Tryon -- not accepted -- decomposition brackenfern
  Pteridium aquilinum var. latiusculum (Desv.) Underw. ex A. Heller -- not accepted -- eastern bracken, northern bracken fern, western brackenfern
  Pteridium aquilinum var. pseudocaudatum (Clute) A. Heller -- not accepted -- tailed bracken, western brackenfern
  Pteridium aquilinum var. pubescens Underw. -- not accepted -- eagle fern, hairy brackenfern, western bracken, western brackenfern
  Pteris aquilina L. -- not accepted
  Pteris heterophylla L. -- not accepted
  Pterostyrax hispidus Siebold & Zucc. -- accepted
  Pterygota Schott & Endl. -- accepted
  Pterygota alata (Roxb.) R. Br. -- accepted
  Pupalia prostrata (L.) Mart. -- not accepted
  Purpusia Brandegee -- not accepted
  Pycnanthemum pilosum Nutt. -- accepted -- whorled mountainmint
  Quercus eggelstonii Trel. -- not accepted
  Quercus pseudomargarettiae Trel. -- not accepted
  Quercus vaccinifolia Kellogg -- not accepted
  Quercus X kinselae (C.H. Mull.) Nixon & C.H. Mull. -- not accepted
  Quercus X pseudomargarettiae Trel. (pro sp.) -- not accepted
  Quercus X sterretii Trel. -- not accepted -- Sterret's oak
  Quillaja Molina -- accepted
  Quillaja saponaria Molina -- accepted -- soapbark
  Ranunculus cordiger Viv. -- accepted -- wingleaf buttercup
  Ranunculus gelidus Kar. & Kir. -- accepted -- ice cold buttercup
  Ranunculus gmelini DC. -- not accepted
  Ranunculus gmelini var. gmelini DC. -- not accepted
  Ranunculus gmelini var. hookeri (D. Don) L.D. Benson -- not accepted
  Ranunculus gmelini var. limosus (Nutt.) H. Hara -- not accepted
  Ranunculus gmelini var. purshii (Richardson) H. Hara -- not accepted
  Ranunculus harveyi var. australis (Brandegee) L.D. Benson -- accepted
  Ranunculus kamtschaticus DC. -- not accepted
  Ranunculus natans C.A. Mey. -- accepted -- nodding buttercup
  Ranunculus petiolaris Kunth ex DC. -- accepted -- Latin American buttercup
  Ranunculus pygmaeus var. langianus Nath. -- not accepted -- pygmy buttercup
  Rapanea Aubl. -- not accepted
  Rauvolfia biauriculata Müll. Arg. -- accepted -- bois lait de montagne
  Rauvolfia hirsuta Jacq. -- not accepted -- devil root
  Relbunium (Endl.) Benth. & Hook. f. -- not accepted
  Reussia Endl. -- not accepted -- reussia
  Reussia rotundifolia (L. f.) A. Cast. -- not accepted -- reussia
  Rhamnus sphaerosperma Sw. -- accepted -- West Indian buckthorn
  Rhynchosia simplicifolia (Walter) Alph. Wood -- not accepted
  Rhytiglossa androsaemifolia Nees -- not accepted
  Robinia slavinii Rehder -- not accepted
  Rollinia orthopetala A. DC. -- not accepted
  Rosa centifolia L. -- not accepted -- cabbage rose
  Rosa engelmannii S. Watson -- not accepted
  Rothrockia A. Gray -- not accepted
  Rubus abbrevians Blanch. -- not accepted
  Rubus aculiferus Fernald -- not accepted -- thorny dewberry
  Rubus adenocaulis Fernald -- not accepted -- glandstem dewberry
  Rubus arenicolus Blanch. -- not accepted
  Rubus fraternus Gremli -- accepted
  Rubus hesperius Rogers -- accepted
  Rubus quaesitus L.H. Bailey -- accepted -- Prince Edward Island blackberry
  Rubus recurvans Blanch. -- accepted -- recurved blackberry
  Rubus ursinus var. loganobaccus (L.H. Bailey) L.H. Bailey -- not accepted
  Rubus viburnifolius Franch. -- accepted
  Ruellia dipteracanthus Hemsl. -- accepted
  Ruellia metziae Tharp -- not accepted -- Metz's wild petunia
  Ruellia metziae var. marshii Tharp & F.A. Barkley -- not accepted
  Rufacer Small -- not accepted
  Rulac Adans. -- not accepted
  Rulac negundo (L.) Hitchc. -- not accepted
  Rumex acetosa ssp. ambiguus (Gren.) Á. Löve -- not accepted
  Rumohra carvifolia (Kunze) Ching -- not accepted
  Rytidophyllum Mart. -- not accepted
  Rytidophyllum auriculatum Hook. -- not accepted -- tibey amarillo
  Saccharodendron (Raf.) Nieuwl. -- not accepted
  Sagina maritima G. Don -- accepted -- sea pearlwort
  Salazaria Torr. -- accepted -- bladdersage
  Salicornia borealis S.L. Wolff & Jefferies -- not accepted -- boreal saltwort
  Salicornia mucronata Lag. -- accepted
  Salix cordata Muhl. -- not accepted -- heartleaf willow
  Salix longifolia Lam. -- accepted
  Salix longifolia var. angustissima Andersson -- not accepted
  Salix microphylla Schlecht. & Cham. -- not accepted
  Salix oleifolia Vill. -- accepted
  Salix padifolia Andersson -- accepted
  Salix rostrata Thuill. -- accepted
  Salix taxifolia var. microphylla (Schltdl. & Cham.) C.K. Schneid. -- not accepted
  Salix X clarkei Bebb -- not accepted
  Salix X hankensonii Dode -- accepted -- Hankenson's willow
  Salix X ungavensis Lepage -- accepted -- willow
  Salvia coccinea Juss. ex Murray -- not accepted -- blood sage
  Salvia pentstemonoides Kunth & Bouché -- not accepted
  Salvia X sylvestris L. (pro sp.) -- not accepted -- woodland sage
  Salvinia biloba Raddi -- accepted -- giant salvinia
  Sambucus africana Standl. -- accepted
  Sambucus racemosa var. leucocarpa (Torr. & A. Gray) Cronquist -- accepted -- European red elderberry
  Sapium jamaicense Sw. -- not accepted -- tabaiba
  Sapota Mill. -- not accepted -- sapota
  Sarcostemma R. Br. -- not accepted -- viney milkweed
  Sarcostemma cynanchoides ssp. cynanchoides Decne. -- not accepted -- fringed twinevine
  Sarcostemma lobata Waterf. -- not accepted
  Sarracenia X readei C.R. Bell -- accepted
  Sarracenia X readii C.R. Bell -- not accepted -- Read's pitcherplant
  Satureja brownii (Sw.) Briq. -- not accepted
  Satureja brownii var. pilosiuscula (A. Gray) Briq. -- not accepted
  Satureja sylvatica (Bromf.) K. Malý -- not accepted
  Saxifraga aizoon Jacq. -- not accepted
  Saxifraga cespitosa ssp. decipiens (Ehrh.) Engl. & Irmsch. -- not accepted
  Saxifraga cespitosa ssp. exaratoides (Simmons) Engl. & Irmsch. -- not accepted -- tufted alpine saxifrage
  Saxifraga davurica Willd. -- not accepted
  Saxifraga rosacea Moench -- accepted -- Irish saxifrage
  Saxifraga stolonifera Meerb. -- not accepted -- creeping saxifrage
  Saxifraga umbellulata Hook. f. & Thomson -- accepted
  Saxifraga umbrosa L. -- accepted -- Pyrenees saxifrage
  Saxifraga X geum L. (pro. sp.) -- accepted -- geum saxifrage
  Schefflera attenuata (Sw.) Frodin -- accepted -- aralie montagne
  Schivereckia Andrz. ex DC. -- accepted
  Schivereckia hyperborea (L.) Berkut. -- accepted
  Schizaea digitata (L.) Sw. -- not accepted
  Sciodaphyllum capitatum (Jacq.) Griseb. -- not accepted
  Scutellaria dumetorum Schltdl. -- accepted
  Securinega Comm. ex Juss. -- accepted
  Sedum rupicolum G.N. Jones -- not accepted
  Selaginella heterodonta (Desv. ex Poir.) Hieron. -- accepted
  Selaginella spinosa P. Beauv. -- not accepted
  Selaginella willdenovii (Desv. ex Poir.) Baker -- not accepted
  Senegalia riparia (Kunth) Britton & Rose -- accepted
  Senegalia wrightii (Benth.) Britton & Rose -- not accepted
  Serpocaulon attenuatum (C. Presl) A.R. Sm. -- accepted
  Serpocaulon loriceum (L.) A.R. Sm. -- accepted
  Serpocaulon triseriale (Sw.) A.R. Sm. -- accepted
  Sesamum orientale L. -- not accepted -- sesame
  Sesuvium sessile Pers. -- not accepted -- western seapurslane
  Sida cuneifolia Roxb. -- not accepted
  Sida hispida Pursh -- not accepted
  Sidopsis hispida (Pursh) Rydb. -- not accepted
  Silene apetala Willd. -- accepted
  Silene cserei Baumg. -- not accepted
  Silene fimbriata Sims -- not accepted
  Silene montana Arrond. -- accepted
  Sium angustifolium L. -- not accepted
  Skottsbergiliana H. St. John -- not accepted
  Sloanea berteriana Choisy ex DC. -- not accepted -- bullwood
  Smilax aristolochiifolia Mill. -- accepted -- sarsaparilla
  Smilax lasioneuron Hook. -- not accepted
  Sophia andrenarum var. osmiarum Cockerell -- not accepted
  Sophia richardsonii (O.E. Schulz) Rydb. -- not accepted
  Sopubia mannii Skan -- accepted
  Spathodea obovata Kunth -- not accepted
  Spergularia bocconii (Scheele) Graebn. -- not accepted -- Boccone's sandspurry
  Sphaerocionium C. Presl -- not accepted
  Sphenoclea pongatium DC. -- not accepted
  Sphenomeris Maxon -- accepted -- parsley fern
  Spiraeanthus schrenckianus Maxim. -- accepted
  Stahlia maritima Bello -- not accepted
  Stanleyella texana (Cory) Rollins -- not accepted
  Staticaceae -- not accepted
  Statice L. -- not accepted
  Statice maritima Mill. -- not accepted
  Stellaria crassipes Hultén -- not accepted -- tundra starwort
  Stellaria edwardsii var. crassipes (Hultén) B. Boivin -- not accepted
  Stellaria longifolia var. eciliata (B. Boivin) B. Boivin -- not accepted -- longleaf starwort
  Sterculia acuminata P. Beauv. -- not accepted
  Sterculia alata Roxb. -- not accepted
  Sticherus palmatus (W. Schaffn. ex E. Fourn.) Copel. -- not accepted
  Sticherus remotus (Kaulf.) Chrysler -- accepted
  Sticherus trachyrhizoma (H. Christ) Copel. -- not accepted
  Stylosanthes subsericea S.F. Blake -- accepted -- pencilflower
  Styrax americana Lam. -- not accepted -- American snowbell
  Styrax americanus Lam. -- accepted -- American snowbell, snowbell
  Styrax rediviva (Torr.) Wheeler -- not accepted -- drug snowbell
  Styrax redivivus (Torr.) L.C. Wheeler -- accepted -- California styrax, drug snowbell
  Styrax texana Cory -- not accepted
  Styrax texanus Cory -- not accepted -- Texas snowbell, Texas snowbells
  Sullivantia ohionis Torr. & A. Gray ex A. Gray -- not accepted
  Swainsona Salisb. -- accepted
  Swainsonia Salisb. -- not accepted
  Swietenia humilis Zucc. -- accepted
  Tabebuia rufescens J.R. Johnst. -- accepted -- black poui, cogwood, greenheart
  Tabernaemontana pandacaqui Poir. -- accepted
  Talinum polygaloides Gillies ex Arn. -- accepted
  Tamonea curassavica (L.) Pers. -- accepted
  Tamonea spinosa Sw. -- not accepted -- cardero
  Tapiscia Oliver -- accepted
  Tecoma rosea Bertol. -- not accepted
  Tecoma serratifolia (Vahl) G. Don -- not accepted
  Tectaria dissecta (G. Forst.) Lellinger -- accepted
  Tectaria pedata (Desv.) R.M. Tryon & A.F. Tryon -- accepted
  Telesonix jamesii (Torr.) Raf. -- accepted -- James' saxifrage, James' telesonix
  Tetraplasandra turbans Sherff -- not accepted
  Tetraplasandra waianensis O. Deg. -- not accepted
  Tetrapteris Cav. -- not accepted
  Tetrapteris buxifolia Cav. -- not accepted -- boxleaf
  Tetrapteris citrifolia auct. non (Sw.) Pers. -- not accepted
  Tetrapteris inaequalis Cav. -- not accepted -- bejuco de paralejo
  Teucrium chamaedrys L. -- accepted -- wall germander
  Thalictrum aquilegiifolium L. -- accepted
  Thaumatococcus daniellii (Benn.) Benth. -- accepted -- miracle fruit
  Thelypteris asterothrix (Fée) Proctor -- not accepted
  Thelypteris augescens var. puberula (Baker) Munz & I.M. Johnst. -- not accepted
  Thelypteris patens var. scabriuscula (C. Presl) A.R. Sm. -- not accepted
  Thelypteris pellita (Willd.) Proctor & Lourteig -- accepted
  Thorella bulbosa (Thore) P. Fourn. -- not accepted
  Thyrsacanthus nitidus (Jacq.) Nees -- not accepted
  Tomanthera Raf. -- not accepted
  Tournefortia tomentosa Mill. -- not accepted
  Trachyphytum gracile Nutt. -- not accepted
  Tragia scandens M.E. Jones -- not accepted
  Trichomanes baueranum Endl. -- not accepted
  Trichomanes flaccidum G. Forst. -- not accepted
  Trichomanes hirsutum L. -- not accepted
  Trichopteris Spreng. -- not accepted
  Trichopteris borinquena (Maxon) R.M. Tryon -- not accepted
  Trichopteris pubescens (Baker) R.M. Tryon -- not accepted
  Trichospermum richii (A. Gray) Seem. -- accepted
  Trigonotis Steven -- accepted
  Trigonotis peduncularis (Trevis.) Benth. ex Baker & S. Moore -- accepted -- cucumber herb
  Tristiropsis acutangula Radlk. -- accepted
  Triumfetta althaeoides Lam. -- not accepted
  Tylophora polyantha Volkens -- accepted
  Ullucus Caldas -- accepted
  Urechites lutea (L.) Britton -- not accepted
  Urechites lutea var. sericea R.W. Long -- not accepted
  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
  Utricularia racemosa Wall. ex Walp. -- not accepted
  Uvaria laurifolia Sw. -- not accepted
  Valeriana scandens var. candolleana (Gard.) C.A. Müll. -- not accepted -- Florida valerian
  Velascoa Calderón & Rzed. -- accepted
  Velascoa recondita Calderón & Rzed. -- accepted
  Verbena blanchardi Moldenke -- not accepted
  Verbena clemensorum Moldenke -- not accepted
  Verbena elegans Kunth -- not accepted
  Verbena quadrangulata A. Heller -- not accepted
  Verbena squamosa Jacq. -- not accepted
  Veronica alpina ssp. australis (Wahlenb.) Á. Löve & D. Löve -- not accepted
  Veronica alpina var. australis Wahlenb. -- not accepted -- alpine speedwell
  Vexillifera Ducke -- not accepted
  Vexillifera micranthera Ducke -- not accepted
  Viburnum rafinesqueanum var. affine (Bush) House -- accepted -- downy arrowwood
  Vicia americana ssp. mexicana C.R. Gunn -- accepted -- Mexican vetch
  Vicia cordata Wulfen ex Hoppe -- not accepted
  Vicia eriocarpa (Hausskn.) Halácsy -- not accepted
  Vicia macrocarpa (Moris) Bertol. -- not accepted
  Vicia sativa ssp. cordata (Wulfen ex Hoppe) Batt. -- not accepted
  Vicia sativa ssp. macrocarpa (Moris) Arcang. -- not accepted
  Vicia sativa var. cordata Arcang. -- accepted
  Vicia sativa var. macrocarpa Moris -- accepted
  Vicia villosa ssp. eriocarpa (Hausskn.) P.W. Ball -- not accepted
  Vicia villosa ssp. pseudocracca (Bertol.) Rouy -- not accepted -- winter vetch
  Vicia villosa var. eriocarpa Hausskn. -- accepted
  Villadia misera (Lindley) R.T. Clausen -- accepted
  Viola dissena House -- not accepted
  Viola eriocarpon Schwein. -- not accepted
  Viola helena C.N. Forbes & Lydgate -- not accepted
  Viola langsdorfii Fisch. ex Ging. -- not accepted -- Aleutian violet
  Viola mulfordae Pollard -- not accepted
  Viola pensylvanica var. leiocarpa (Fernald & Wiegand) Fernald -- not accepted
  Viola pubescens var. eriocarpon Nutt. -- not accepted
  Virola surinamensis (Rol. ex Rottb.) Warb. -- accepted
  Vismia cayennensis (Jacq.) Pers. -- accepted
  Vismia falcata Rusby -- not accepted
  Vismia laxiflora Reichardt -- accepted
  Vitis coriacea Miq. -- accepted
  Winterana L. -- not accepted
  Winterana canella L. -- not accepted
  Wittmackanthus stanleyanum (R.H. Schomb.) Kuntze -- accepted
  Xylophylla L. -- not accepted

A gray bar