Plant List

Indexed Alphabetically by Common Name

T, U, V, W, X, Y & Z

For a list of plants indexed by Scientific Name, click here

--Please wait while data loads--

  National Common Name Scientific Name with Author Symbol Family
tabardillo Calliandra californica Benth. CACA82 Fabaceae
tachibana orange Citrus tachibana (Makino) T. Tanaka CITA3 Rutaceae
tackstem Calycoseris Gray CALYC4 Asteraceae
tagasaste Chamaecytisus palmensis (Christ) Bisby & K. Nicholls [excluded] CHPA44 Fabaceae
Tahoe sedge Carex tahoensis Smiley CATA Cyperaceae
tail grape Artabotrys R. Br. ARTAB Annonaceae
tailed grapefern Botrychium acuminatum W.H. Wagner BOAC2 Ophioglossaceae
tailed maidenhair Adiantum caudatum L. ADCA3 Pteridaceae
tailed nicker Caesalpinia caudata (Gray) Fisher CACA26 Fabaceae
tailed strapfern Campyloneurum costatum (Kunze) K. Presl CACO20 Polypodiaceae
talayote Cynanchum racemosum (Jacq.) Jacq. CYRA4 Asclepiadaceae
talayote Cynanchum racemosum (Jacq.) Jacq. var. unifarium (Scheele) E. Sundell CYRAU Asclepiadaceae
talh Acacia seyal Del. ACSE7 Fabaceae
tall agoseris Agoseris elata (Nutt.) Greene AGEL Asteraceae
tall albizia Albizia procera (Roxb.) Benth. ALPR Fabaceae
tall baeckea Baeckea virgata (J.R. Forst. & G. Forst.) Andrews BAVI9 Myrtaceae
tall beardgrass Bothriochloa alta (A.S. Hitchc.) Henr. BOAL3 Poaceae
tall brome Bromus grandis (Shear) A.S. Hitchc. BRGR4 Poaceae
tall bugbane Actaea elata (Nutt.) Prantl ACEL4 Ranunculaceae
tall chamomile Anthemis altissima L. ANAL11 Asteraceae
tall dodder Cuscuta exaltata Engelm. CUEX Cuscutaceae
tall false foxglove Agalinis aspera (Dougl. ex Benth.) Britt. AGAS2 Scrophulariaceae
tall flatsedge Cyperus eragrostis Lam. CYER Cyperaceae
tall grama Bouteloua hirsuta Lag. var. pectinata (Featherly) Cory BOHIP Poaceae
tall hairy agrimony Agrimonia gryposepala Wallr. AGGR2 Rosaceae
tall ladies'-tresses Cyclopogon elatus (Sw.) Schlechter CYEL6 Orchidaceae
tall milkvetch Astragalus altus Woot. & Standl. ASAL8 Fabaceae
tall oat grass Arrhenatherum album (Vahl) Clayton ARAL28 Poaceae
tall oatgrass Arrhenatherum elatius (L.) Beauv. ex J.& K. Presl AREL3 Poaceae
tall oatgrass Arrhenatherum elatius (L.) Beauv. ex J.& K. Presl var. bulbosum (Willd.) Spenner ARELB Poaceae
tall oatgrass Arrhenatherum elatius (L.) Beauv. ex J.& K. Presl var. elatius ARELE Poaceae
tall poppymallow Callirhoe leiocarpa R.F. Martin CALE2 Malvaceae
tall silverbush Argythamnia mercurialina (Nutt.) Muell.-Arg. ARME5 Euphorbiaceae
tall silverbush Argythamnia mercurialina (Nutt.) Muell.-Arg. var. mercurialina ARMEM Euphorbiaceae
tall silverbush Argythamnia mercurialina (Nutt.) Muell.-Arg. var. pilosissima (Benth.) Shinners ARMEP Euphorbiaceae
tall spiny milkvetch Astragalus kentrophyta Gray var. elatus S. Wats. ASKEE Fabaceae
tall spiritweed Aegiphila elata Sw. AEEL Verbenaceae
tall thimbleweed Anemone virginiana L. ANVI3 Ranunculaceae
tall thimbleweed Anemone virginiana L. var. alba (Oakes) Wood ANVIA2 Ranunculaceae
tall thimbleweed Anemone virginiana L. var. cylindroidea Boivin ANVIC Ranunculaceae
tall thimbleweed Anemone virginiana L. var. virginiana ANVIV2 Ranunculaceae
tall thistle Cirsium altissimum (L.) Hill CIAL2 Asteraceae
tall threeawn Aristida patula Chapman ex Nash ARPA11 Poaceae
tall tickseed Coreopsis tripteris L. COTR4 Asteraceae
tall windmill grass Chloris elata Desv. CHEL3 Poaceae
Tallahassee hawthorn Crataegus consanguinea Beadle CRCO8 Rosaceae
Tallul campylopus moss Campylopus tallulensis Sull. & Lesq. CATA4 Dicranaceae
talus collomia Collomia larsenii (Gray) Payson COLA8 Polemoniaceae
talus springparsley Cymopterus lapidosus (M.E. Jones) M.E. Jones CYLA10 Apiaceae
tamarind anisomeridium lichen Anisomeridium tamarindi (Fee) R. C. Harris ANTA2 Monoblastiaceae
tangelo Citrus ×tangelo J. Ingram & H. Moore CITA Rutaceae
tangerine Citrus reticulata Blanco CIRE3 Rutaceae
tangor Citrus nobilis Lour. CINO3 Rutaceae
Tanners Canyon onion Allium plummerae S. Wats. ALPL4 Liliaceae
tansyleaf evening-primrose Camissonia tanacetifolia (Torr. & Gray) Raven CATA2 Onagraceae
tansyleaf evening-primrose Camissonia tanacetifolia (Torr. & Gray) Raven ssp. tanacetifolia CATAT Onagraceae
taperfruit shortscale sedge Carex leptopoda Mackenzie CALE24 Cyperaceae
tapertip dodder Cuscuta attenuata Waterfall CUAT Cuscutaceae
tapertip flatsedge Cyperus acuminatus Torr. & Hook. ex Torr. CYAC2 Cyperaceae
tapertip hawksbeard Crepis acuminata Nutt. CRAC2 Asteraceae
tapertip hawksbeard Crepis acuminata Nutt. ssp. acuminata CRACA Asteraceae
tapertip hawksbeard Crepis acuminata Nutt. ssp. pluriflora Babcock & Stebbins CRACP Asteraceae
tapertip onion Allium acuminatum Hook. ALAC4 Liliaceae
tapertip spleenwort Asplenium acuminatum Hook. & Arn. ASAC4 Aspleniaceae
tara vine Actinidia arguta (Sieb. & Zucc.) Planch. ex Miq. ACAR10 Actinidiaceae
tarflower Bejaria racemosa Vent. BERA3 Ericaceae
tarheel sedge Carex austrocaroliniana Bailey CAAU7 Cyperaceae
Tarheel sedge Carex pigra Naczi CAPI21 Cyperaceae
taro Alocasia (Schott) G. Don ALOCA Araceae
tarragon Artemisia dracunculus L. ARDR4 Asteraceae
tarweed fiddleneck Amsinckia lycopsoides Lehm. AMLY Boraginaceae
tasselflower brickellbush Brickellia grandiflora (Hook.) Nutt. BRGR Asteraceae
Tatarian aster Aster tataricus L. f. ASTA Asteraceae
Tatarian cephalaria Cephalaria gigantea (Ledeb.) Bobr. CEGI2 Dipsacaceae
tatarian maple Acer tataricum L. ACTA80 Aceraceae
Tatarian orache Atriplex tatarica L. ATTA Chenopodiaceae
Tausch's goatgrass Aegilops tauschii Coss. AETA2 Poaceae
tawny cryptantha Cryptantha fulvocanescens (S. Wats.) Payson CRFU Boraginaceae
tawny cryptantha Cryptantha fulvocanescens (S. Wats.) Payson var. fulvocanescens CRFUF Boraginaceae
tawny cryptantha Cryptantha fulvocanescens (S. Wats.) Payson var. nitida (Greene) R.C. Sivinski CRFUN Boraginaceae
tea Camellia sinensis (L.) Kuntze var. sinensis CASIS3 Theaceae
tea Camellia sinensis (L.) O. Kuntze CASI16 Theaceae
tecate cypress Cupressus forbesii Jepson CUFO2 Cupressaceae
Tecopa bird's beak Cordylanthus tecopensis Munz & Roos COTE2 Scrophulariaceae
teddybear cholla Cylindropuntia bigelovii (Engelm.) F.M. Knuth CYBI9 Cactaceae
Tejon cryptantha Cryptantha microstachys (Greene ex Gray) Greene CRMI3 Boraginaceae
telegraph-plant Codariocalyx motorius (Houtt.) H. Ohashi COMO13 Fabaceae
Temblor Range clarkia Clarkia tembloriensis Vasek CLTE5 Onagraceae
Temblor Range clarkia Clarkia tembloriensis Vasek ssp. tembloriensis CLTET Onagraceae
tender green Brassica perviridis (L. H. Bailey) L. H. Bailey BRPE3 Brassicaceae
Tenerife white marguerite Argyranthemum gracilis Webb ex Sch. Bip. ARGR20 Asteraceae
tenlobe false foxglove Agalinis obtusifolia Raf. AGOB Scrophulariaceae
Tennessee milkvetch Astragalus tennesseensis Gray ex Chapman ASTE7 Fabaceae
tenpetal thimbleweed Anemone berlandieri Pritz. ANBE Ranunculaceae
tequila agave Agave tequilana A. Weber AGTE7 Agavaceae
Terlingu brickellia Brickellia hinckleyi Standl. var. terlinguensis (Flyr) B.L. Turner BRHIT Asteraceae
Terlingua Creek cryptantha Cryptantha crassipes I.M. Johnston CRCR7 Boraginaceae
Terlingua sandmat Chamaesyce theriaca (L.C. Wheeler) Shinners CHTH6 Euphorbiaceae
ternate grapefern Botrychium rugulosum W.H. Wagner BORU Ophioglossaceae
terrestrial water-starwort Callitriche terrestris Raf. CATE19 Callitrichaceae
teta prieta Cleyera albopunctata (Griseb.) Krug & Urban CLAL4 Theaceae
Teton anemone Anemone tetonensis Porter ex Britt. ANTE3 Ranunculaceae
Texan canoparmelia lichen Canoparmelia texana (Tuck.) Elix & Hale CATE22 Parmeliaceae
Texan flatsedge Cyperus polystachyos Rottb. var. texensis (Torr.) Fern. CYPOT Cyperaceae
Texan fumewort Corydalis micrantha (Engelm. ex Gray) Gray ssp. texensis G.B. Ownbey COMIT2 Fumariaceae
Texan goatbush Castela erecta Turp. ssp. texana (Torr. & Gray) Cronq. CAERT Simaroubaceae
Texan great ragweed Ambrosia trifida L. var. texana Scheele AMTRT Asteraceae
Texan hogplum Colubrina texensis (Torr. & Gray) Gray COTE6 Rhamnaceae
Texan hogplum Colubrina texensis (Torr. & Gray) Gray var. pedunculata M.C. Johnston COTEP Rhamnaceae
Texan hogplum Colubrina texensis (Torr. & Gray) Gray var. texensis COTET Rhamnaceae
Texan sugarberry Celtis laevigata Willd. var. texana Sarg. CELAT8 Ulmaceae
Texas babybonnets Coursetia axillaris Coult. & Rose COAX Fabaceae
Texas bergia Bergia texana (Hook.) Seub. ex Walp. BETE Elatinaceae
Texas bindweed Convolvulus equitans Benth. COEQ Convolvulaceae
Texas bittercress Cardamine macrocarpa Brandeg. var. texana Rollins CAMAT Brassicaceae
Texas bluestar Amsonia ciliata Walt. var. texana (Gray) Coult. AMCIT2 Apocynaceae
Texas brome Bromus texensis (Shear) A.S. Hitchc. BRTE2 Poaceae
Texas broomweed Amphiachyris amoena (Shinners) Solbrig AMAM3 Asteraceae
Texas bruchia moss Bruchia texana Aust. BRTE7 Bruchiaceae
Texas bullnettle Cnidoscolus texanus (Muell.-Arg.) Small CNTE Euphorbiaceae
Texas chickweed Cerastium texanum Britt. CETE3 Caryophyllaceae
Texas chrysopsis Chrysopsis texana Nesom CHTE10 Asteraceae
Texas croton Croton texensis (Klotzsch) Muell.-Arg. CRTE4 Euphorbiaceae
Texas croton Croton texensis (Klotzsch) Muell.-Arg. var. texensis CRTET Euphorbiaceae
Texas dutchman's pipe Aristolochia reticulata Jacq. ARRE3 Aristolochiaceae
Texas flatsedge Cyperus seslerioides Kunth CYSE2 Cyperaceae
Texas gourd Cucurbita pepo L. var. texana (Scheele) D. Decker CUPET Cucurbitaceae
Texas grama Bouteloua rigidiseta (Steud.) A.S. Hitchc. BORI Poaceae
Texas greeneyes Berlandiera betonicifolia (Hook.) Small BEBE4 Asteraceae
Texas hawthorn Crataegus texana Buckl. CRTE2 Rosaceae
Texas Indian mallow Abutilon fruticosum Guill. & Perrottet ABFR3 Malvaceae
Texas Indian paintbrush Castilleja foliolosa Hook. & Arn. CAFO2 Scrophulariaceae
Texas jelly lichen Collema texanum Tuck. COTE14 Collemataceae
Texas madeiravine Anredera vesicaria (Lam.) Gaertn. f. ANVE2 Basellaceae
Texas madrone Arbutus xalapensis Kunth ARXA80 Ericaceae
Texas manjack Cordia podocephala Torr. COPO2 Boraginaceae
Texas milkweed Asclepias texana Heller ASTE Asclepiadaceae
Texas poppymallow Callirhoe scabriuscula B.L. Robins. CASC4 Malvaceae
Texas pricklypoppy Argemone aurantiaca G.B. Ownbey ARAU2 Papaveraceae
Texas redbud Cercis canadensis L. var. texensis (S. Wats.) M. Hopkins CECAT Fabaceae
Texas ringstem Anulocaulis reflexus I.M. Johnston ANRE3 Nyctaginaceae
Texas salt Allolepis Söderstrom & Decker ALLOL Poaceae
Texas salt Allolepis texana (Vasey) Söderstrom & Decker ALTE3 Poaceae
Texas saltbush Atriplex texana S. Wats. ATTE2 Chenopodiaceae
Texas saucerflower Antiphytum floribundum (Torr.) Gray ANFL3 Boraginaceae
Texas screwstem Bartonia texana Correll BATE2 Gentianaceae
Texas sedge Carex texensis (Torr.) Bailey CATE7 Cyperaceae
Texas sensitive pea Chamaecrista flexuosa (L.) Greene CHFL4 Fabaceae
Texas sensitive pea Chamaecrista flexuosa (L.) Greene var. texana (Buckl.) Irwin & Barneby CHFLT Fabaceae
Texas shell lichen Arthopyrenia texensis (Cooke) D. Hawksw. ARTE12 Arthopyreniaceae
Texas sundrops Calylophus tubicula (Gray) Raven CATU6 Onagraceae
Texas thistle Cirsium texanum Buckl. CITE2 Asteraceae
Texas tickseed Coreopsis linifolia Nutt. COLI5 Asteraceae
Texas torchwood Amyris texana (Buckl.) P. Wilson AMTE4 Rutaceae
Texas trumpets Acleisanthes crassifolia Gray ACCR Nyctaginaceae
Texas western daisy Astranthium robustum (Shinners) DeJong ASRO2 Asteraceae
Texas windmill grass Chloris texensis Nash CHTE Poaceae
Texas wrightwort Carlowrightia texana Henrickson & Daniel CATE15 Acanthaceae
Texasplume Bauhinia lunarioides Gray ex S. Wats. BALU Fabaceae
textile bamboo Bambusa textilis McClure BATE6 Poaceae
textile onion Allium textile A. Nels. & J.F. Macbr. ALTE Liliaceae
Tharp's croton Croton lindheimerianus Scheele var. tharpii M.C. Johnston CRLIT Euphorbiaceae
The Cedars manzanita Arctostaphylos bakeri Eastw. ssp. sublaevis P.V. Wells ARBAS Ericaceae
thicket anoda Anoda crenatiflora Ortega ANCR Malvaceae
thicket hogwood Clidemia strigillosa (Sw.) DC. CLST2 Melastomataceae
thicket rattlebox Crotalaria virgulata Klotzsch CRVI14 Fabaceae
thicket sedge Carex abscondita Mackenzie CAAB5 Cyperaceae
thickfoot saltbush Atriplex pachypoda Stutz & Chu ATPA8 Chenopodiaceae
thickhead sedge Carex macloviana d'Urv. CAMA9 Cyperaceae
thickpod milkvetch Astragalus pachypus Greene ASPA9 Fabaceae
thickpod milkvetch Astragalus pachypus Greene var. pachypus ASPAP5 Fabaceae
thicksepal cryptantha Cryptantha crassisepala (Torr. & Gray) Greene CRCR3 Boraginaceae
thicksepal cryptantha Cryptantha crassisepala (Torr. & Gray) Greene var. crassisepala CRCRC Boraginaceae
thicksepal cryptantha Cryptantha crassisepala (Torr. & Gray) Greene var. elachantha I.M. Johnston CRCRE Boraginaceae
thickstem wild cabbage Caulanthus crassicaulis (Torr.) S. Wats. CACR11 Brassicaceae
thickstem wild cabbage Caulanthus crassicaulis (Torr.) S. Wats. var. crassicaulis CACRC Brassicaceae
thickstem wild cabbage Caulanthus crassicaulis (Torr.) S. Wats. var. glaber M.E. Jones CACRG Brassicaceae
Thiers' cup lichen Cladonia thiersii S. Hammer CLTH2 Cladoniaceae
thinfruit sedge Carex flaccosperma Dewey CAFL3 Cyperaceae
thinleaf alder Alnus incana (L.) Moench ssp. tenuifolia (Nutt.) Breitung ALINT Betulaceae
thinleaf creepingfern Bolbitis nicotianifolia (Sw.) Alston BONI Dryopteridaceae
thinleaf false brome Brachypodium phoenicoides (L.) Roemer & J.A. Schultes BRPH3 Poaceae
thinleaf fourwing saltbush Atriplex canescens (Pursh) Nutt. var. linearis (S. Wats.) Munz ATCAL4 Chenopodiaceae
thinleaf sedge Carex cephaloidea (Dewey) Dewey CACE2 Cyperaceae
thinstem lady's mantle Alchemilla filicaulis Buser ALFI5 Rosaceae
thinstem lady's mantle Alchemilla filicaulis Buser ssp. vestita (Buser) M.E. Bradshaw ALFIV Rosaceae
thistle Cirsium P. Mill. CIRSI Asteraceae
thistle cholla Cylindropuntia davisii (Engelm. & Bigelow) F.M. Knuth CYDA4 Cactaceae
thistle cholla Cylindropuntia tunicata (Lehm.) F.M. Knuth CYTU3 Cactaceae
Thomas' lidflower Calyptranthes thomasiana Berg CATH3 Myrtaceae
Thompkins' sedge Carex tompkinsii J.T. Howell CATO9 Cyperaceae
Thompson's cryptantha Cryptantha thompsonii I.M. Johnston CRTH3 Boraginaceae
Thompson's Indian paintbrush Castilleja thompsonii Pennell CATH4 Scrophulariaceae
Thompson's pincushion Chaenactis thompsonii Cronq. CHTH Asteraceae
Thompson's rockcress Arabis microphylla Nutt. var. thompsonii Rollins ARMIT Brassicaceae
Thompson's sandwort Arenaria franklinii Dougl. ex Hook. var. thompsonii M.E. Peck ARFRT Caryophyllaceae
Thomson's cup lichen Cladonia thomsonii Ahti CLTH60 Cladoniaceae
thorn wattle Acacia continua Benth. ACCO18 Fabaceae
Thornber's buckhorn cholla Cylindropuntia acanthocarpa (Engelm. & Bigelow) F.M. Knuth var. thornberi (Thornb. & Bonker) Pinkava CYACT Cactaceae
thorncrest century plant Agave univittata Haw. AGUN2 Agavaceae
thorn-mint Acanthomintha (Gray) Gray ACANT2 Lamiaceae
thoroughwort Chromolaena DC. CHROM3 Asteraceae
thoroughwort Conoclinium DC. CONOC4 Asteraceae
thoroughwort Critonia P. Br. CRITO2 Asteraceae
threadleaf brodiaea Brodiaea filifolia S. Wats. BRFI Liliaceae
threadleaf false foxglove Agalinis setacea (J.F. Gmel.) Raf. AGSE3 Scrophulariaceae
threadleaf giant hyssop Agastache rupestris (Greene) Standl. AGRU Lamiaceae
threadleaf sedge Carex filifolia Nutt. CAFI Cyperaceae
threadstalk milkvetch Astragalus speirocarpus Gray ASSP7 Fabaceae
threadstem sandmat Chamaesyce revoluta (Engelm.) Small CHRE4 Euphorbiaceae
threeawn Aristida L. ARIST Poaceae
threeblossom lidflower Calyptranthes triflora Alain CATR12 Myrtaceae
threebract onion Allium tribracteatum Torr. ALTR2 Liliaceae
threecorner leek Allium triquetrum L. ALTR4 Liliaceae
threeflower hawthorn Crataegus triflora Chapman CRTR2 Rosaceae
threeleaf cayratia Cayratia trifolia (L.) Domin CATR29 Vitaceae
threeleaf goldthread Coptis trifolia (L.) Salisb. COTR2 Ranunculaceae
threelobe beggarticks Bidens tripartita L. BITR Asteraceae
threelocule corchorus Corchorus trilocularis L. COTR13 Tiliaceae
threeseed croton Croton lindheimerianus Scheele CRLI2 Euphorbiaceae
threeseed croton Croton lindheimerianus Scheele var. lindheimerianus CRLIL Euphorbiaceae
threeseeded sedge Carex trisperma Dewey CATR10 Cyperaceae
threeseeded sedge Carex trisperma Dewey var. trisperma CATRT3 Cyperaceae
threespike fiddlewood Citharexylum tristachyum Turcz. CITR7 Verbenaceae
threetip sagebrush Artemisia tripartita Rydb. ARTR4 Asteraceae
threetip sagebrush Artemisia tripartita Rydb. ssp. tripartita ARTRT2 Asteraceae
thrift seapink Armeria maritima (P. Mill.) Willd. ARMA6 Plumbaginaceae
Thule arctopeltis lichen Arctopeltis thuleana Poelt ARTH3 Lecanoraceae
Thunberg's amaranthus Amaranthus thunbergii Moq. AMTH2 Amaranthaceae
Thurber's desert honeysuckle Anisacanthus thurberi (Torr.) Gray ANTH2 Acanthaceae
Thurber's desertpeony Acourtia thurberi (Gray) Reveal & King ACTH Asteraceae
Thurber's Indian mallow Abutilon thurberi Gray ABTH2 Malvaceae
Thurber's milkvetch Astragalus thurberi Gray ASTH Fabaceae
Thurber's needlegrass Achnatherum thurberianum (Piper) Barkworth ACTH7 Poaceae
Thurber's sedge Carex thurberi Dewey CATH Cyperaceae
thymeleaf sandmat Chamaesyce serpyllifolia (Pers.) Small CHSE6 Euphorbiaceae
thymeleaf sandmat Chamaesyce serpyllifolia (Pers.) Small ssp. hirtella (Engelm. ex S. Wats.) Koutnik CHSEH Euphorbiaceae
thymeleaf sandmat Chamaesyce serpyllifolia (Pers.) Small ssp. serpyllifolia CHSES Euphorbiaceae
thymeleaf sandwort Arenaria serpyllifolia L. ARSE2 Caryophyllaceae
ti ngahere Cordyline banksii Hook. f. COBA14 Liliaceae
Tibet milkvetch Astragalus tibetanus Benth. ex Bunge ASTI5 Fabaceae
Tibetan hazelnut Corylus ferox Wallich var. thibetica (Batalin) Franchet COFET Betulaceae
tibey de cresta Columnea ambigua (Urban) Morley COAM6 Gesneriaceae
tibey parasito Columnea scandens L. COSC11 Gesneriaceae
tibey parasito Columnea scandens L. var. tulae (Urban) Wiehler COSCT Gesneriaceae
Tiburon Indian paintbrush Castilleja affinis Hook. & Arn. ssp. neglecta (Zeile) Chuang & Heckard CAAFN2 Scrophulariaceae
Tiburon mariposa lily Calochortus tiburonensis A.J. Hill CATI3 Liliaceae
tick trefoil Codariocalyx Hassk. CODAR Fabaceae
tickseed Coreopsis L. COREO2 Asteraceae
tidalmarsh amaranth Amaranthus cannabinus (L.) Sauer AMCA2 Amaranthaceae
tidalmarsh flatsedge Cyperus serotinus Rottb. CYSE5 Cyperaceae
Tidestrom's milkvetch Astragalus tidestromii (Rydb.) Clokey ASTI Fabaceae
Tiehm's milkvetch Astragalus tiehmii Barneby ASTI3 Fabaceae
tietongue Coccoloba diversifolia Jacq. CODI8 Polygonaceae
Tilesius' wormwood Artemisia tilesii Ledeb. ARTI Asteraceae
Tilesius' wormwood Artemisia tilesii Ledeb. ssp. elatior (Torr. & Gray) Hultén ARTIE Asteraceae
Tilesius' wormwood Artemisia tilesii Ledeb. ssp. gormanii (Rydb.) Hultén ARTIG Asteraceae
Tilesius' wormwood Artemisia tilesii Ledeb. ssp. tilesii ARTIT Asteraceae
Tilesius' wormwood Artemisia tilesii Ledeb. ssp. unalaschcensis (Bess.) Hultén ARTIU2 Asteraceae
timber milkvetch Astragalus miser Dougl. ASMI9 Fabaceae
timber milkvetch Astragalus miser Dougl. var. crispatus (M.E. Jones) Cronq. ASMIC Fabaceae
timber milkvetch Astragalus miser Dougl. var. miser ASMIM4 Fabaceae
timber milkvetch Astragalus miser Dougl. var. oblongifolius (Rydb.) Cronq. ASMIO Fabaceae
timber milkvetch Astragalus miser Dougl. var. serotinus (Gray ex Cooper) Barneby ASMIS Fabaceae
timber milkvetch Astragalus miser Dougl. var. tenuifolius (Nutt.) Barneby ASMIT Fabaceae
timberline sagebrush Artemisia rothrockii Gray ARRO4 Asteraceae
tinged sedge Carex tincta (Fern.) Fern. CATI2 Cyperaceae
tiny trumpet Collomia linearis Nutt. COLI2 Polemoniaceae
tinypetal waxweed Cuphea micrantha Kunth CUMI Lythraceae
Tioga Pass sedge Carex tiogana D. Taylor & J. Mastrogiuseppe, sp. nov. ined. CATI5 Cyperaceae
tiplant Cordyline fruticosa (L.) Chev. COFR2 Liliaceae
tissue sedge Carex hyalina Boott CAHY2 Cyperaceae
tissueleaf hawthorn Crataegus membranacea Sarg. CRME11 Rosaceae
titi Cyrilla Garden ex L. CYRIL Cyrillaceae
Toano milkvetch Astragalus toanus M.E. Jones ASTO2 Fabaceae
Toano milkvetch Astragalus toanus M.E. Jones var. scidulus Welsh & Atwood ASTOS Fabaceae
Toano milkvetch Astragalus toanus M.E. Jones var. toanus ASTOT Fabaceae
toddy palm Borassus flabellifer L. [excluded] BOFL2 Arecaceae
toetoe Cortaderia toetoe Zotov COTO6 Poaceae
Toiyabe springparsley Cymopterus goodrichii Welsh & Neese CYGO Apiaceae
Tolmie star-tulip Calochortus tolmiei Hook. & Arn. CATO Liliaceae
Tolmie's onion Allium tolmiei (Hook.) Baker ex S. Wats. ALTO Liliaceae
Tolmin's orange lichen Caloplaca tominii Savicz CATO18 Teloschistaceae
Tolm's onion Allium tolmiei (Hook.) Baker ex S. Wats. var. tolmiei ALTOT Liliaceae
tomentose gopherweed Baptisia lanceolata (Walt.) Ell. var. tomentosa (Larisey) Isely BALAT Fabaceae
Tonglet's cracked lichen Acarospora tongleti Hue ACTO4 Acarosporaceae
Tonkin cane Arundinaria amabilis McClure ARAM6 Poaceae
Tonopah milkvetch Astragalus pseudiodanthus Barneby ASPS Fabaceae
Tonto Basin century plant Agave delamateri W.C. Hodgson & L. Slauson AGDE10 Agavaceae
toothache grass Ctenium aromaticum (Walt.) Wood CTAR Poaceae
toothache grass Ctenium Panzer CTENI Poaceae
toothed five eyes Chamaesaracha crenata Rydb. CHCR2 Solanaceae
toothed flatsedge Cyperus dentatus Torr. CYDE2 Cyperaceae
toothed midsorus fern Blechnum serrulatum L.C. Rich. BLSE Blechnaceae
toothed onion Allium denticulatum (Ownbey & Aase) McNeal ALDE6 Liliaceae
toothed snailfern Cochlidium serrulatum (Sw.) Bishop COSE7 Grammitidaceae
toothed spiderflower Cleome serrata Jacq. CLSE2 Capparaceae
toothed spleenwort Asplenium trichomanes-dentatum L. ASTR9 Aspleniaceae
toothleaf cyrtandra Cyrtandra halawensis Rock CYHA2 Gesneriaceae
toothpickweed Ammi visnaga (L.) Lam. AMVI2 Apiaceae
Toquima milkvetch Astragalus toquimanus Barneby ASTO3 Fabaceae
torchwood Amyris P. Br. AMYRI Rutaceae
toria Brassica rapa L. var. dichotoma (Roxb. ex Fleming) Kitam. BRRAD Brassicaceae
Torrey maple Acer glabrum Torr. var. torreyi (Greene) Smiley ACGLT2 Aceraceae
Torrey's amaranthus Amaranthus torreyi (Gray) Benth. ex S. Wats. AMTO6 Amaranthaceae
Torrey's blue eyed Mary Collinsia torreyi Gray COTO Scrophulariaceae
Torrey's blue eyed Mary Collinsia torreyi Gray var. brevicarinata Newsom COTOB Scrophulariaceae
Torrey's blue eyed Mary Collinsia torreyi Gray var. latifolia Newsom COTOL Scrophulariaceae
Torrey's blue eyed Mary Collinsia torreyi Gray var. torreyi COTOT Scrophulariaceae
Torrey's croton Croton incanus Kunth CRIN13 Euphorbiaceae
Torrey's cryptantha Cryptantha torreyana (Gray) Greene CRTO4 Boraginaceae
Torrey's milkvetch Astragalus calycosus Torr. ex S. Wats. ASCA9 Fabaceae
Torrey's milkvetch Astragalus calycosus Torr. ex S. Wats. var. calycosus ASCAC5 Fabaceae
Torrey's milkvetch Astragalus calycosus Torr. ex S. Wats. var. monophyllidius (Rydb.) Barneby ASCAM2 Fabaceae
Torrey's milkvetch Astragalus calycosus Torr. ex S. Wats. var. scaposus (Gray) M.E. Jones ASCAS Fabaceae
Torrey's saltbush Atriplex torreyi (S. Wats.) S. Wats. ATTO Chenopodiaceae
Torrey's sedge Carex torreyi Tuckerman CATO3 Cyperaceae
Torrey's wrightwort Carlowrightia torreyana Wasshausen CATO13 Acanthaceae
tortured horsehair lichen Bryoria tortuosa (G. Merr.) Brodo & D. Hawksw. BRTO2 Parmeliaceae
to-tsubaki Camellia reticulata Lindl. CARE24 Theaceae
toughleaf dogwood Cornus asperifolia Michx. COAS2 Cornaceae
Toumey's century plant Agave toumeyana Trel. ex Standl. AGTO Agavaceae
Toumey's century plant Agave toumeyana Trel. ex Standl. var. bella Breitung AGTOB Agavaceae
Toumey's century plant Agave toumeyana Trel. ex Standl. var. toumeyana AGTOT Agavaceae
Toumey's sundrops Calylophus toumeyi (Small) Towner CATO12 Onagraceae
tower rockcress Arabis glabra (L.) Bernh. ARGL Brassicaceae
Tracy's bluestem Andropogon tracyi Nash ANTR Poaceae
Tracy's clarkia Clarkia gracilis (Piper) A. Nels. & J.F. Macbr. ssp. tracyi (Jepson) Abdel-Hamee & R. Snow CLGRT Onagraceae
Tracy's collomia Collomia tracyi Mason COTR Polemoniaceae
Tracy's hawthorn Crataegus tracyi Ashe ex Egglest. CRTR Rosaceae
Tracy's thistle Cirsium undulatum (Nutt.) Spreng. var. tracyi (Rydb.) Welsh CIUNT Asteraceae
trailing abutilon Abutilon megapotamicum (A. Spreng.) A. St.-Hil. & Naudin ABME3 Malvaceae
trailing buckbrush Ceanothus connivens Greene CECO2 Rhamnaceae
trailing white monkshood Aconitum reclinatum Gray ACRE Ranunculaceae
trailing windmills Allionia incarnata L. ALIN Nyctaginaceae
trailing windmills Allionia incarnata L. var. incarnata ALINI Nyctaginaceae
trailing windmills Allionia incarnata L. var. nudata (Standl.) Munz ALINN Nyctaginaceae
trailing windmills Allionia incarnata L. var. villosa (Standl.) B.L. Turner ALINV2 Nyctaginaceae
trailplant Adenocaulon Hook. ADENO Asteraceae
transcend cup lichen Cladonia transcendens (Vainio) Vainio CLTR60 Cladoniaceae
transmontane sand verbena Abronia turbinata Torr. ex S. Wats. ABTU Nyctaginaceae
transparent milkvetch Astragalus diaphanus Dougl. ex Hook. ASDI2 Fabaceae
Trans-Pecos amaranth Amaranthus obcordatus (Gray) Standl. AMOB Amaranthaceae
TransPecos ayenia Ayenia filiformis S. Wats. AYFI Sterculiaceae
TransPecos chickweed Cerastium axillare Correll CEAX Caryophyllaceae
TransPecos croton Croton sancti-lazari Croizat CRSA5 Euphorbiaceae
TransPecos dodder Cuscuta decipiens Yuncker CUDE Cuscutaceae
TransPecos five eyes Chamaesaracha villosa Rydb. CHVI9 Solanaceae
TransPecos giant hyssop Agastache breviflora (Gray) Epling AGBR Lamiaceae
TransPecos Indian paintbrush Castilleja nervata Eastw. CANE18 Scrophulariaceae
TransPecos Indian parsley Aletes filifolius Mathias, Constance & Theobald ALFI3 Apiaceae
Trans-Pecos sandwort Arenaria ludens Shinners ARLU2 Caryophyllaceae
TransPecos wrightwort Carlowrightia serpyllifolia Gray CASE3 Acanthaceae
Trask's cryptantha Cryptantha traskiae I.M. Johnston CRTR7 Boraginaceae
Trask's milkvetch Astragalus traskiae Eastw. ASTR4 Fabaceae
Traub's rainlily Cooperia traubii Hayward COTR5 Liliaceae
traveler's delight Apios priceana B.L. Robins. APPR Fabaceae
traveler's-joy Clematis brachiata Thunb. CLBR5 Ranunculaceae
treadsoftly Cnidoscolus aconitifolius (P. Mill.) I.M. Johnston CNAC Euphorbiaceae
tree aenium Aeonium arboreum (L.) Webb & Berth. AEAR4 Crassulaceae
tree anemone Carpenteria californica Torr. CACA17 Hydrangeaceae
tree anemone Carpenteria Torr. CARPE Hydrangeaceae
tree cholla Cylindropuntia imbricata (Haw.) F.M. Knuth CYIM2 Cactaceae
tree cholla Cylindropuntia imbricata (Haw.) F.M. Knuth var. argentea (Anthony) Backeberg CYIMA Cactaceae
tree cholla Cylindropuntia imbricata (Haw.) F.M. Knuth var. imbricata CYIMI Cactaceae
tree climacium moss Climacium dendroides (Hedw.) Web. & Mohr CLDE70 Climaciaceae
tree of heaven Ailanthus altissima (P. Mill.) Swingle AIAL Simaroubaceae
tree seaside tansy Borrichia arborescens (L.) DC. BOAR2 Asteraceae
tree snailfern Cochlidium seminudum (Willd.) Maxon COSE6 Grammitidaceae
tree tomato Cyphomandra betacea (Cav.) Sendtner CYBE3 Solanaceae
treebine Cissus L. CISSU Vitaceae
treefern Cyathea Sm. CYATH Cyatheaceae
treetrunk cyanea Cyanea copelandii Rock CYCO12 Campanulaceae
treetrunk cyanea Cyanea copelandii Rock ssp. copelandii CYCOC Campanulaceae
treetrunk cyanea Cyanea copelandii Rock ssp. haleakalaensis (St. John) Lammers CYCOH2 Campanulaceae
treetrunk fern Anetium citrifolium (L.) Splitg. ANCI2 Vittariaceae
treetrunk fern Anetium Splitg. ANETI Vittariaceae
treetrunk spleenwort Asplenium auriculatum Sw. ASAU2 Aspleniaceae
Trelease's century plant Agave schottii Engelm. var. treleasei (Toumey) Kearney & Peebles AGSCT Agavaceae
Trelease's milkvetch Astragalus racemosus Pursh var. treleasei C.L. Porter ASRAT Fabaceae
triangle burr ragweed Ambrosia deltoidea (Torr.) Payne AMDE4 Asteraceae
triangle cactus Acanthocereus (Engelm. ex Berger) Britt. & Rose ACANT6 Cactaceae
triangle cactus Acanthocereus tetragonus (L.) Humm. ACTE4 Cactaceae
triangle orache Atriplex prostrata Bouchér ex DC. ATPR Chenopodiaceae
triangle waterfern Ceratopteris richardii Brongn. CERI2 Parkeriaceae
trianglelobe moonwort Botrychium ascendens W.H. Wagner BOAS2 Ophioglossaceae
triangularfruit sedge Carex triquetra Boott CATR9 Cyperaceae
tridens corchorus Corchorus tridens L. COTR12 Tiliaceae
trident maple Acer buergerianum Miq. ACBU4 Aceraceae
Trinidad milkvetch Astragalus puniceus Osterhout ASPU8 Fabaceae
Trinidad milkvetch Astragalus puniceus Osterhout var. gertrudis (Greene) Barneby ASPUG Fabaceae
Trinidad milkvetch Astragalus puniceus Osterhout var. puniceus ASPUP6 Fabaceae
Trinity Mountain rockcress Arabis rigidissima Rollins ARRI Brassicaceae
Trinity Mountain rockcress Arabis rigidissima Rollins var. demota Rollins ARRID Brassicaceae
Trinity Mountain rockcress Arabis rigidissima Rollins var. rigidissima ARRIR Brassicaceae
triplerib milkvetch Astragalus tricarinatus Gray ASTR5 Fabaceae
trivial absconditella lichen Absconditella trivialis (Willey ex Tuck.) Vezda ABTR3 Stictidaceae
trojan beet Beta trojana A. Pamukc. ex Aellen BETR3 Chenopodiaceae
tronchuda cabbage Brassica oleracea L. var. costata DC. BROLC2 Brassicaceae
tropical amaranth Amaranthus polygonoides L. AMPO Amaranthaceae
tropical flatsedge Cyperus surinamensis Rottb. CYSU Cyperaceae
tropical lilythorn Catesbaea melanocarpa Krug & Urban CAME19 Rubiaceae
tropical medicineplant Adenostemma verbesina (L.) Schultz-Bip. ADVE2 Asteraceae
tropical sensitive pea Chamaecrista absus (L.) Irwin & Barneby CHAB3 Fabaceae
tropical sensitive pea Chamaecrista absus (L.) Irwin & Barneby var. absus (L.) Irwin & Barneby [excluded] CHABA2 Fabaceae
tropical sensitive pea Chamaecrista absus (L.) Irwin & Barneby var. meonandra (Irwin & Barneby) Irwin & Barneby CHABM Fabaceae
tropical spiderflower Cleome stenophylla Klotzsch ex Urban CLST Capparaceae
tropical waterhyssop Bacopa innominata (G. Maza) Alain BAIN2 Scrophulariaceae
tropical waxweed Cuphea aspera Chapman CUAS Lythraceae
tropical whiteweed Ageratum conyzoides L. AGCO Asteraceae
troubled milkvetch Astragalus anxius R.J. Meinke & Kaye ASAN18 Fabaceae
troublesome sedge Carex molesta Mackenzie ex Bright CAMO11 Cyperaceae
Trout Creek milkvetch Astragalus salmonis M.E. Jones ASSA4 Fabaceae
Truckee cryptantha Cryptantha glomeriflora Greene CRGL3 Boraginaceae
Truckee rabbitbrush Chrysothamnus humilis Greene CHHU2 Asteraceae
True's manzanita Arctostaphylos mewukka Merriam ssp. truei (W. Knight) P.V. Wells ARMET Ericaceae
trumpet Collomia Nutt. COLLO Polemoniaceae
trumpet creeper Campsis radicans (L.) Seem. ex Bureau CARA2 Bignoniaceae
trumpet tree Cecropia obtusifolia Bertol. CEOB Cecropiaceae
trumpets Acleisanthes Gray ACLEI Nyctaginaceae
Trypethel's buelliella lichen Buelliella trypethelii (Tuck.) Fink BUTR3 Physciaceae
tuba milkweed Asclepias tomentosa Ell. ASTO Asclepiadaceae
tuber anemone Anemone tuberosa Rydb. ANTU Ranunculaceae
tuber anemone Anemone tuberosa Rydb. var. texana Enquist & Crozier ANTUT Ranunculaceae
tuber anemone Anemone tuberosa Rydb. var. tuberosa ANTUT2 Ranunculaceae
tubercle dodder Cuscuta tuberculata Brandeg. CUTU Cuscutaceae
tubercled saltbush Atriplex acanthocarpa (Torr.) S. Wats. ATAC Chenopodiaceae
tubercled saltbush Atriplex acanthocarpa (Torr.) S. Wats. ssp. acanthocarpa ATACA Chenopodiaceae
tubercled saltbush Atriplex acanthocarpa (Torr.) S. Wats. ssp. coahuilensis Henrickson ATACC Chenopodiaceae
tuberous grasspink Calopogon tuberosus (L.) B.S.P. CATU5 Orchidaceae
tuberous grasspink Calopogon tuberosus (L.) B.S.P. var. tuberosus CATUT Orchidaceae
tuberous springbeauty Claytonia tuberosa Pallas ex J.A. Schultes CLTU Portulacaceae
tuberous springbeauty Claytonia tuberosa Pallas ex J.A. Schultes var. czukczorum (Volk.) Hultén CLTUC Portulacaceae
tuberous springbeauty Claytonia tuberosa Pallas ex J.A. Schultes var. tuberosa CLTUT Portulacaceae
tubular bluestar Amsonia longiflora Torr. AMLO Apocynaceae
tubular bluestar Amsonia longiflora Torr. var. longiflora AMLOL Apocynaceae
tubular bluestar Amsonia longiflora Torr. var. salpignantha (Woods.) S.P. McLaughlin AMLOS Apocynaceae
Tuckerman's dot lichen Arthonia tuckermaniana Willey ARTU2 Arthoniaceae
Tuckerman's earth lichen Catapyrenium tuckermanii (Rav. ex Mont.) J. W. Thomson CATU11 Verrucariaceae
Tuckerman's sedge Carex tuckermanii Dewey CATU2 Cyperaceae
Tucker's anisomeridium lichen Anisomeridium tuckerae R. C. Harris ANTU2 Monoblastiaceae
Tucson burr ragweed Ambrosia cordifolia (Gray) Payne AMCO4 Asteraceae
Tucson cracked lichen Acarospora tucsonensis H. Magn. ACTU2 Acarosporaceae
Tucson Mountain spiderling Boerhavia megaptera Standl. BOME Nyctaginaceae
Tucson pricklypear Cylindropuntia ×tetracantha (Toumey) F.M. Knuth (pro sp.) [acanthocarpa × leptocaulis] CYTE15 Cactaceae
tufted cryptantha Cryptantha caespitosa (A. Nels.) Payson CRCA7 Boraginaceae
tufted hairsedge Bulbostylis vestita (Kunth) C.B. Clarke BUVE Cyperaceae
tufted lacefern Aspidotis carlotta-halliae (Wagner & Gilbert) Lellinger ASCA17 Pteridaceae
tufted lineleaf fern Antrophyum intramarginale (Baker ex Jenman) Kartesz & Gandhi ANIN9 Vittariaceae
tufted milkvetch Astragalus spatulatus Sheldon ASSP6 Fabaceae
tufted milkweed Asclepias nummularia Torr. ASNU Asclepiadaceae
Tulare County rockcress Arabis pygmaea Rollins ARPY Brassicaceae
Tulare cryptantha Cryptantha incana Greene CRIN7 Boraginaceae
Tulare saltbush Atriplex tularensis Coville ATTU Chenopodiaceae
tumble windmill grass Chloris verticillata Nutt. CHVE2 Poaceae
tumbling saltweed Atriplex rosea L. ATRO Chenopodiaceae
tuna Consolea moniliformis (L.) Britt. COMO8 Cactaceae
tundra chickweed Cerastium gorodkovianum Schischkin CEGO Caryophyllaceae
tundra milkvetch Astragalus umbellatus Bunge ASUM2 Fabaceae
Tununk saltbush Atriplex minuticarpa Stutz & Chu ATMI4 Chenopodiaceae
turban sedge Carex turbinata Lieb. CATU17 Cyperaceae
turgid aulacomnium moss Aulacomnium turgidum (Wahlenb.) Schwaegr. AUTU70 Aulacomniaceae
turgid brachythecium moss Brachythecium turgidum (Hartm.) Kindb. BRTU70 Brachytheciaceae
turgid cup lichen Cladonia turgida Hoffm. CLTU60 Cladoniaceae
turkeypeas Astragalus nuttallianus DC. var. cedrosensis M.E. Jones ASNUC Fabaceae
turkeypeas Astragalus nuttallianus DC. var. imperfectus (Rydb.) Barneby ASNUI Fabaceae
turkeypeas Astragalus nuttallianus DC. var. macilentus (Small) Barneby ASNUM Fabaceae
turkeypeas Astragalus nuttallianus DC. var. micranthiformis Barneby ASNUM2 Fabaceae
turkeypeas Astragalus nuttallianus DC. var. trichocarpus Torr. & Gray ASNUT Fabaceae
turkeypeas Astragalus nuttallianus DC. var. zapatanus Barneby ASNUZ Fabaceae
Turkish hawksbeard Crepis nicaeensis Balbis ex Pers. CRNI2 Asteraceae
Turkish hazelnut Corylus colurna L. COCO30 Betulaceae
Turkish hazelnut Corylus colurna L. var. colurna COCOC5 Betulaceae
turkish rugging Chorizanthe staticoides Benth. CHST4 Polygonaceae
Turkish wartycabbage Bunias orientalis L. BUOR Brassicaceae
turk's turbin Clerodendrum indicum (L.) Kuntze CLIN Verbenaceae
Turner's hawthorn Crataegus turnerorum Enquist CRTU2 Rosaceae
turnip-root chervil Chaerophyllum bulbosum L. CHBU5 Apiaceae
turpentine mulga Acacia cibaria F. Muell. ACCI6 Fabaceae
Turpin's sandmat Chamaesyce turpinii (Boiss.) Millsp. CHTU Euphorbiaceae
turtlefat Auerodendron pauciflorum Alain AUPA2 Rhamnaceae
turtlehead Chelone L. CHELO Scrophulariaceae
turtleweed Batis maritima L. BAMA5 Bataceae
turtleweed Batis P. Br. BATIS Bataceae
Tushar Plateau Indian paintbrush Castilleja parvula Rydb. CAPA46 Scrophulariaceae
tussock bellflower Campanula carpatica Jacq. CACA37 Campanulaceae
Tweedy's milkvetch Astragalus tweedyi Canby ASTW Fabaceae
Tweedy's pussypaws Cistanthe tweedyi (Gray) Hershkovitz CITW2 Portulacaceae
Tweedy's reedgrass Calamagrostis tweedyi (Scribn.) Scribn. ex Vasey CATW Poaceae
Tweedy's sandwort Arenaria fendleri Gray var. tweedyi (Rydb.) Maguire ARFET3 Caryophyllaceae
Tweedy's snowlover Chionophila tweedyi (Canby & Rose) Henderson CHTW Scrophulariaceae
twin arnica Arnica sororia Greene ARSO2 Asteraceae
twincrest onion Allium bisceptrum S. Wats. ALBI2 Liliaceae
twincrest onion Allium bisceptrum S. Wats. var. bisceptrum ALBIB Liliaceae
twining screwstem Bartonia paniculata (Michx.) Muhl. BAPA2 Gentianaceae
twining screwstem Bartonia paniculata (Michx.) Muhl. ssp. iodandra (B.L. Robins.) J. Gillett BAPAI Gentianaceae
twining screwstem Bartonia paniculata (Michx.) Muhl. ssp. paniculata BAPAP Gentianaceae
twinleaf onion Allium anceps Kellogg ALAN Liliaceae
twisted cleomella Cleomella plocasperma S. Wats. CLPL2 Capparaceae
twisted sedge Carex torta Boott ex Tuckerman CATO4 Cyperaceae
twocolor croton Croton leucophyllus Muell.-Arg. CRLE3 Euphorbiaceae
twocolor horsehair lichen Bryoria bicolor (Ehrh.) Brodo & D. Hawksw. BRBI60 Parmeliaceae
twocolor sedge Carex bicolor Bellardi ex All. CABI4 Cyperaceae
twocrested milkvetch Astragalus bicristatus Gray ASBI Fabaceae
twoflower rattlebox Crotalaria biflora L. CRBI8 Fabaceae
twoflower stickpea Calliandra biflora Tharp CABI Fabaceae
twogrooved milkvetch Astragalus bisulcatus (Hook.) Gray ASBI2 Fabaceae
twogrooved milkvetch Astragalus bisulcatus (Hook.) Gray var. bisulcatus ASBIB Fabaceae
twogrooved milkvetch Astragalus bisulcatus (Hook.) Gray var. major (M.E. Jones) Welsh ASBIM Fabaceae
twoheaded water-starwort Callitriche heterophylla Pursh CAHE3 Callitrichaceae
twoheaded water-starwort Callitriche heterophylla Pursh ssp. heterophylla CAHEH Callitrichaceae
twoleaf anemone Anemone quinquefolia L. var. bifolia Farw. ANQUB2 Ranunculaceae
twoleaf sensitive pea Chamaecrista diphylla (L.) Greene CHDI6 Fabaceae
twoleaf springparsley Cymopterus coulteri (M.E. Jones) Mathias CYCO5 Apiaceae
twoline false foxglove Agalinis laxa Pennell AGLA10 Scrophulariaceae
twolobe clarkia Clarkia biloba (Dur.) A. Nels. & J.F. Macbr. CLBI Onagraceae
twolobe clarkia Clarkia biloba (Dur.) A. Nels. & J.F. Macbr. ssp. biloba CLBIB2 Onagraceae
twolobe dutchman's pipe Aristolochia bilobata L. ARBI5 Aristolochiaceae
twolobe spineflower Chorizanthe biloba Goodman CHBI2 Polygonaceae
twolobe spineflower Chorizanthe biloba Goodman var. biloba CHBIB Polygonaceae
twolobe spineflower Chorizanthe biloba Goodman var. immemora Reveal & Hardham CHBII Polygonaceae
twoscale saltbush Atriplex micrantha Ledeb. ATMI2 Chenopodiaceae
twotipped sedge Carex lachenalii Schkuhr CALA10 Cyperaceae
twotooth sedge Carex serratodens W. Boott CASE2 Cyperaceae
two-vein-hickory Acacia binervata DC. ACBI5 Fabaceae
Tygh Valley milkvetch Astragalus tyghensis M.E. Peck ASTY Fabaceae
Tyrol knapweed Centaurea nigrescens Willd. CENI3 Asteraceae
udo Aralia cordata Thunb. ARCO33 Araliaceae
uhiuhi Caesalpinia kavaiensis Mann CAKA5 Fabaceae
Uinta basin cryptantha Cryptantha breviflora (Osterhout) Payson CRBR7 Boraginaceae
Uinta Basin gilia Aliciella stenothyrsa (Gray) J.M. Porter ALST12 Polemoniaceae
Uinta Basin springparsley Cymopterus duchesnensis M.E. Jones CYDU Apiaceae
Uinta sandwort Arenaria kingii (S. Wats.) M.E. Jones ssp. uintahensis (A. Nels.) Maguire ARKIU2 Caryophyllaceae
Uloth's cercidospora lichen Cercidospora ulothii Korber CEUL Uncertain Lichen Family
ulunahele Cyrtandra kauaiensis Wawra CYKA8 Gesneriaceae
umbel bittercress Cardamine oligosperma Nutt. var. kamtschatica (Regel) Detling CAOLK Brassicaceae
umbel clerodendrum Clerodendrum umbellatum Poir. CLUM5 Verbenaceae
umber pussytoes Antennaria umbrinella Rydb. ANUM Asteraceae
umbrella acacia Acacia oswaldii F. Muell. ACOS2 Fabaceae
umbrella flatsedge Cyperus diandrus Torr. CYDI3 Cyperaceae
umbrella thorn Acacia tortilis (Forsskal) Hayne ACTO6 Fabaceae
Umpqua mariposa lily Calochortus umpquaensis N.A. Fredricks CAUM5 Liliaceae
unbrella plant Cyperus involucratus Rottb. CYIN6 Cyperaceae
undulate atrichum moss Atrichum undulatum (Hedw.) P. Beauv. ATUN2 Polytrichaceae
undulate jelly lichen Collema undulatum Laurer ex Flotow COUN60 Collemataceae
undulate jelly lichen Collema undulatum Laurer ex Flotow var. granulosum Degel. COUNG Collemataceae
unequal leaf bryoerythrophyllum moss Bryoerythrophyllum inaequalifolium (Tayl.) Zand. BRIN10 Pottiaceae
uniola flatsedge Cyperus unioloides R. Br. CYUN3 Cyperaceae
Unshu orange Citrus reticulata Blanco ssp. unshiu (Marcow.) D.Rivera Núńez et al. CIREU Rutaceae
upland bentgrass Agrostis perennans (Walt.) Tuckerman AGPE Poaceae
upright sedge Carex stricta Lam. CAST8 Cyperaceae
Urban's beggartick Bidens reptans (L.) G. Don var. urbanii (Greenm.) O.E. Schulz BIREU Asteraceae
Urban's flatsedge Cyperus urbanii Boeckl. CYUR Cyperaceae
Urban's lineleaf fern Antrophyum urbanii Brause ANUR Vittariaceae
Urban's nakedwood Colubrina verrucosa (Urban) M.C. Johnston COVE6 Rhamnaceae
urceolate conotrema lichen Conotrema urceolatum (Ach.) Tuck. COUR2 Stictidaceae
urn orchid Bletilla striata (Thunb.) Reichenb. f. BLST Orchidaceae
urnplant Aechmea fasciata (Lindl.) Baker AEFA3 Bromeliaceae
Uruguayan pampas grass Cortaderia selloana (J.A. & J.H. Schultes) Aschers. & Graebn. COSE4 Poaceae
Utah agave Agave utahensis Engelm. AGUT Agavaceae
Utah agave Agave utahensis Engelm. var. eborispina (Hester) Breitung AGUTE Agavaceae
Utah agave Agave utahensis Engelm. var. utahensis AGUTU Agavaceae
Utah angelica Angelica wheeleri S. Wats. ANWH Apiaceae
Utah butterflybush Buddleja utahensis Coville BUUT Buddlejaceae
Utah columbine Aquilegia scopulorum Tidestrom AQSC Ranunculaceae
Utah columbine Aquilegia scopulorum Tidestrom var. calcarea (M.E. Jones) Munz AQSCC Ranunculaceae
Utah columbine Aquilegia scopulorum Tidestrom var. scopulorum AQSCS Ranunculaceae
Utah cracked lichen Acarospora utahensis H. Magn. ACUT Acarosporaceae
Utah croton Croton texensis (Klotzsch) Muell.-Arg. var. utahensis Cronq. CRTEU Euphorbiaceae
Utah milkvetch Astragalus utahensis (Torr.) Torr. & Gray ASUT Fabaceae
Utah milkweed Asclepias labriformis M.E. Jones ASLA Asclepiadaceae
Utah serviceberry Amelanchier utahensis Koehne AMUT Rosaceae
Utah serviceberry Amelanchier utahensis Koehne var. utahensis AMUTU Rosaceae
Utah small camas Camassia quamash (Pursh) Greene ssp. utahensis Gould CAQUU2 Liliaceae
Utah suncup Camissonia scapoidea (Nutt. ex Torr. & Gray) Raven ssp. utahensis (Raven) Raven CASCU Onagraceae
Utah swallow-wort Cynanchum utahense (Engelm.) Woods. CYUT Asclepiadaceae
uvera Coccoloba pyrifolia Desf. COPY Polygonaceae
uvero de monte Coccoloba sintenisii Urban ex Lindau COSI2 Polygonaceae
uvilla Coccoloba costata C. Wright ex Sauvalle COCO8 Polygonaceae
Vahl's box Buxus vahlii Baill. BUVA Buxaceae
Vahl's flatsedge Cyperus flexuosus Vahl CYFL3 Cyperaceae
Vail Lake ceanothus Ceanothus ophiochilus Boyd, Ross & Arnseth CEOP Rhamnaceae
valley cyrtandra Cyrtandra calpidicarpa (Rock) St. John & Storey CYCA8 Gesneriaceae
valley head hawthorn Crataegus austromontana Beadle CRAU2 Rosaceae
valley redstem Ammannia coccinea Rottb. AMCO Lythraceae
valley ringstem Anulocaulis annulatus (Coville) Standl. ANAN4 Nyctaginaceae
valley saltbush Atriplex cuneata A. Nels. ATCU Chenopodiaceae
valley saltbush Atriplex cuneata A. Nels. ssp. cuneata ATCUC Chenopodiaceae
valley saltbush Atriplex cuneata A. Nels. ssp. introgressa C.A. Hanson ATCUI Chenopodiaceae
valley sedge Carex vallicola Dewey CAVA3 Cyperaceae
valley sedge Carex vallicola Dewey var. vallicola CAVAV Cyperaceae
Van Houtte's columbine Aquilegia eximia Van Houtte ex Planch. AQEX Ranunculaceae
Vancouver groundcone Boschniakia hookeri Walp. BOHO Orobanchaceae
Vancouver witch's hair lichen Alectoria vancouverensis (Gyelnik) Gyelnik ex Brodo & D. Hawksw. ALVA5 Alectoriaceae
Vanderbilt's palo de ramon Banara vanderbiltii Urban BAVA2 Flacourtiaceae
vanillaleaf Carphephorus odoratissimus (J.F. Gmel.) Herbert CAOD3 Asteraceae
variable flatsedge Cyperus difformis L. CYDI4 Cyperaceae
variable orange lichen Caloplaca variabilis (Pers.) Mull. Arg. CAVA8 Teloschistaceae
variable sandmat Chamaesyce multiformis (Gaud. ex Hook. & Arn.) Croizat & Deg. CHMU3 Euphorbiaceae
variable sandmat Chamaesyce multiformis (Gaud. ex Hook. & Arn.) Croizat & Deg. var. microphylla (Boiss.) O.& I. Deg. CHMUM Euphorbiaceae
variable sandmat Chamaesyce multiformis (Gaud. ex Hook. & Arn.) Croizat & Deg. var. multiformis CHMUM2 Euphorbiaceae
variable sedge Carex polymorpha Muhl. CAPO4 Cyperaceae
variable spleenwort Asplenium varians Wallich ex Hook. & Grev. ASVA4 Aspleniaceae
variableleaf collomia Collomia heterophylla Dougl. ex Hook. COHE2 Polemoniaceae
variableleaf flymallow Cienfuegosia heterophylla (Vent.) Garcke CIHE2 Malvaceae
variableleaf Indian plaintain Arnoglossum diversifolium (Torr. & Gray) H.E. Robins. ARDI9 Asteraceae
variableleaf springbeauty Claytonia heterophylla (Torr. & Gray) Swanson CLHE Portulacaceae
variegated orange lichen Caloplaca albovariegata (de Lesd.) Wetmore CAAL26 Teloschistaceae
variegated sedge Carex stylosa C.A. Mey. CAST10 Cyperaceae
Vasek's clarkia Clarkia tembloriensis Vasek ssp. calientensis (Vasek) Holsinger CLTEC Onagraceae
vasevine Clematis viorna L. CLVI4 Ranunculaceae
Vasey's rabbitbrush Chrysothamnus vaseyi (Gray) Greene CHVA2 Asteraceae
Vasey's thistle Cirsium hydrophilum (Greene) Jepson var. vaseyi (Gray) J.T. Howell CIHYV Asteraceae
Vasey's wild lime Adelia vaseyi (Coult.) Pax & K. Hoffmann ADVA Euphorbiaceae
Veatch's dodder Cuscuta veatchii Brandeg. CUVE2 Cuscutaceae
vega blanca Brunfelsia lactea Krug & Urban BRLA5 Solanaceae
veiny brickellbush Brickellia venosa (Woot. & Standl.) B.L. Robins. BRVE Asteraceae
veldt-grape Cissus quadrangularis L. CIQU5 Vitaceae
velvet bentgrass Agrostis canina L. AGCA4 Poaceae
velvet sedge Carex vestita Willd. CAVE9 Cyperaceae
velvetleaf Abutilon theophrasti Medik. ABTH Malvaceae
velvetleaf glorybower Clerodendrum macrostegium Schauer CLMA24 Verbenaceae
Venezuelan treebine Cissus rotundifolia (Forssk.) Vahl CIRO3 Vitaceae
vente conmigo Croton glandulosus L. CRGL2 Euphorbiaceae
vente conmigo Croton glandulosus L. var. angustifolius Muell.-Arg. CRGLA Euphorbiaceae
vente conmigo Croton glandulosus L. var. floridanus (Ferguson) R.W. Long CRGLF Euphorbiaceae
vente conmigo Croton glandulosus L. var. glandulosus CRGLG Euphorbiaceae
vente conmigo Croton glandulosus L. var. pubentissimus Croizat CRGLP Euphorbiaceae
vente conmigo Croton glandulosus L. var. septentrionalis Muell.-Arg. CRGLS Euphorbiaceae
Venus' chariot Aconitum napellus L. ACNA Ranunculaceae
vernal pool Indian paintbrush Castilleja campestris (Benth.) Chuang & Heckard CACA79 Scrophulariaceae
vernal pool Indian paintbrush Castilleja campestris (Benth.) Chuang & Heckard ssp. campestris CACAC14 Scrophulariaceae
vernal sedge Carex caryophyllea Lat. CACA23 Cyperaceae
vernal water-starwort Callitriche palustris L. CAPA52 Callitrichaceae
vernalgrass Anthoxanthum L. ANTHO Poaceae
vernalpool brodiaea Brodiaea minor (Benth.) S. Wats. BRMI3 Liliaceae
veronicaleaf brickellbush Brickellia veronicifolia (Kunth) Gray BRVE2 Asteraceae
veronicaleaf brickellbush Brickellia veronicifolia (Kunth) Gray var. petrophila (B.L. Robins.) B.L. Robins. BRVEP Asteraceae
veronicaleaf brickellbush Brickellia veronicifolia (Kunth) Gray var. veronicifolia BRVEV Asteraceae
victory onion Allium victorialis L. ALVI3 Liliaceae
Vierhapper's aster Aster alpinus L. var. vierhapperi (Onno) Cronq. ASALV Asteraceae
villalba Condylidium iresinoides (Kunth) King & H.E. Robins. COIR Asteraceae
villalba Condylidium King & H.E. Robins. CONDY2 Asteraceae
villous lipfern Cheilanthes villosa Davenport ex Maxon CHVI Pteridaceae
Vine Hill ceanothus Ceanothus foliosus Parry var. vineatus McMinn CEFOV Rhamnaceae
Vine Hill clarkia Clarkia imbricata H.F. & M.E. Lewis CLIM Onagraceae
Vine Hill manzanita Arctostaphylos densiflora M.S. Baker ARDE2 Ericaceae
vine maple Acer circinatum Pursh ACCI Aceraceae
violet blue eyed Mary Collinsia violacea Nutt. COVI2 Scrophulariaceae
violet milkvetch Astragalus iodopetalus (Rydb.) Barneby ASIO2 Fabaceae
violet-lily Calydorea Herbert CALYD Iridaceae
viper beggarticks Bidens campylotheca Schultz-Bip. BICA2 Asteraceae
viper beggarticks Bidens campylotheca Schultz-Bip. ssp. campylotheca BICAC Asteraceae
viper beggarticks Bidens campylotheca Schultz-Bip. ssp. pentamera (Sherff) Ganders & Nagata BICAP Asteraceae
Virgin River cryptantha Cryptantha virginensis (M.E. Jones) Payson CRVI5 Boraginaceae
virgin thistle Cirsium virginense Welsh CIVI6 Asteraceae
Virginia bryohaplocladium moss Bryohaplocladium virginianum (Brid.) Wat. & Iwats. BRVI7 Leskeaceae
Virginia dayflower Commelina virginica L. COVI3 Commelinaceae
Virginia jointvetch Aeschynomene virginica (L.) B.S.P. AEVI3 Fabaceae
Virginia roundleaf birch Betula uber (Ashe) Fern. BEUB Betulaceae
Virginia snakeroot Aristolochia serpentaria L. ARSE3 Aristolochiaceae
Virginia springbeauty Claytonia virginica L. CLVI3 Portulacaceae
Virginia springbeauty Claytonia virginica L. var. acutiflora DC. CLVIA Portulacaceae
Virginia springbeauty Claytonia virginica L. var. virginica CLVIV Portulacaceae
Virginia thistle Cirsium virginianum (L.) Michx. CIVI Asteraceae
Virginia threeseed mercury Acalypha virginica L. ACVI Euphorbiaceae
Virginia whitehair leather flower Clematis coactilis (Fern.) Keener CLCO4 Ranunculaceae
viscid acacia Acacia neovernicosa Isely ACNE4 Fabaceae
viscid lipfern Cheilanthes viscida Davenport CHVI2 Pteridaceae
viscid mallow Bastardia viscosa (L.) Kunth BAVI4 Malvaceae
viscid mallow Bastardia viscosa (L.) Kunth var. sanctae-crucis R.E. Fries BAVIS2 Malvaceae
viscid mallow Bastardia viscosa (L.) Kunth var. viscosa BAVIV Malvaceae
volantines preciosos Cleome speciosa Raf. CLSP5 Capparaceae
vomitbush Atamisquea emarginata Miers ex Hook. & Arn. ATEM Capparaceae
Vreeland's coralroot Corallorhiza striata Lindl. var. vreelandii (Rydb.) L.O. Williams COSTV2 Orchidaceae
vulcan cup lichen Cladonia didyma (Fee) Vainio var. vulcanica (Zoll. & Moritzi) Vainio CLDIV Cladoniaceae
waha milkvetch Astragalus arthurii M.E. Jones ASAR8 Fabaceae
wahiawa bog sandmat Chamaesyce sparsiflora (Heller) Koutnik CHSP4 Euphorbiaceae
Wahiawa cyanea Cyanea sylvestris Heller CYSY Campanulaceae
Wahiawa Mountain cyrtandra Cyrtandra kealiae Wawra CYKE Gesneriaceae
wahini noho mauna Adenophorus tamariscinus (Kaulfuss) Hook. & Grev. ADTA Grammitidaceae
Wahlenberg's catolechia lichen Catolechia wahlenbergii (Ach.) Korber CAWA5 Rhizocarpaceae
Waianae Range alsinidendron Alsinidendron obovatum Sherff ALOB4 Caryophyllaceae
Waianae Range papala Charpentiera tomentosa Sohmer CHTO3 Amaranthaceae
Waianae Range papala Charpentiera tomentosa Sohmer var. maakuaensis Sohmer CHTOM Amaranthaceae
Waianae Range papala Charpentiera tomentosa Sohmer var. tomentosa CHTOT Amaranthaceae
Waihee clermontia Clermontia multiflora Hbd. CLMU2 Campanulaceae
Waihee Valley cyanea Cyanea lobata Mann CYLO5 Campanulaceae
Waihee Valley cyanea Cyanea lobata Mann ssp. lobata CYLOL Campanulaceae
Waihoi beggarticks Bidens campylotheca Schultz-Bip. ssp. waihoiensis St. John BICAW Asteraceae
Waikane Valley cyrtandra Cyrtandra kaulantha St. John & Storey CYKA9 Gesneriaceae
Wailai Pali clermontia Clermontia pallida Hbd. CLPA6 Campanulaceae
Wain's cup lichen Cladonia wainioi Savicz CLWA5 Cladoniaceae
Waioiani clermontia Clermontia persicifolia Gaud. CLPE3 Campanulaceae
Waioli Valley rollandia Cyanea parvifolia (Forbes) Lammers, Givnish & Systma CYPA23 Campanulaceae
Waipio Valley clermontia Clermontia kohalae Rock CLKO Campanulaceae
wait-a-bit vine Caesalpinia phyllanthoides Standl. CAPH Fabaceae
Waldo manzanita Arctostaphylos ×cinerea T.J. Howell (pro sp.) [canescens × viscida] ARCI Ericaceae
Waldo rockcress Arabis aculeolata Greene ARAC4 Brassicaceae
Walker Pass milkvetch Astragalus ertterae Barneby & Shevock ASER6 Fabaceae
Walker's suncup Camissonia walkeri (A. Nels.) Raven CAWA3 Onagraceae
Walker's suncup Camissonia walkeri (A. Nels.) Raven ssp. tortilis (Jepson) Raven CAWAT Onagraceae
Walker's suncup Camissonia walkeri (A. Nels.) Raven ssp. walkeri CAWAW2 Onagraceae
walking fern Asplenium rhizophyllum L. ASRH2 Aspleniaceae
walkingstick cactus Cylindropuntia spinosior (Engelm.) F.M. Knuth CYSP8 Cactaceae
wallaby grass Amphibromus Nees AMPHI9 Poaceae
Wallangarra wattle Acacia adunca A. Cunn. ex G. Don ACAD Fabaceae
Wallich's bindweed Convolvulus wallichianus Spreng. COWA2 Convolvulaceae
Wallich's glorybower Clerodendrum wallichii Merr. CLWA3 Verbenaceae
Wallowa cryptantha Cryptantha subcapitata Dorn & Lichvar CRSU15 Boraginaceae
Wallowa Indian paintbrush Castilleja wallowensis Pennell CAWA4 Scrophulariaceae
Wallowa needlegrass Achnatherum wallowaensis Maze & K.A. Robson ACWA4 Poaceae
Wallowa onion Allium tolmiei (Hook.) Baker ex S. Wats. var. platyphyllum (Tidestrom) Ownbey ALTOP2 Liliaceae
wallrue Asplenium ruta-muraria L. ASRU2 Aspleniaceae
wallrue Asplenium ruta-muraria L. var. cryptolepis (Fern.) Wherry ASRUC Aspleniaceae
walnut spleenwort Asplenium juglandifolium Lam. ASJU2 Aspleniaceae
Walpole's small camas Camassia quamash (Pursh) Greene ssp. walpolei (Piper) Gould CAQUW Liliaceae
Walter's sedge Carex striata Michx. CAST41 Cyperaceae
Walter's sedge Carex striata Michx. var. brevis Bailey CASTB Cyperaceae
Walter's sedge Carex striata Michx. var. striata CASTS4 Cyperaceae
Waltham Creek clarkia Clarkia modesta Jepson CLMO Onagraceae
wampi Clausena lansium (Lour.) Skeels CLLA9 Rutaceae
wand butterflybush Buddleja racemosa Torr. BURA Buddlejaceae
wand butterflybush Buddleja racemosa Torr. ssp. incana (Torr.) Norm. BURAI2 Buddlejaceae
wand butterflybush Buddleja racemosa Torr. ssp. racemosa BURAR Buddlejaceae
Ward's milkvetch Astragalus wardii Gray ASWA2 Fabaceae
Ward's saltbush Atriplex wardii Standl. ATWA2 Chenopodiaceae
Ware's hairsedge Bulbostylis warei (Torr.) C.B. Clarke BUWA Cyperaceae
Warm Springs hawthorn Crataegus limata Beadle CRLI6 Rosaceae
Warner's dodder Cuscuta warneri Yuncker CUWA2 Cuscutaceae
Warner's hawthorn Crataegus warneri Sarg. CRWA Rosaceae
Warnock's grama Bouteloua warnockii Gould & Kapadia BOWA Poaceae
Warnock's snakewood Condalia warnockii M.C. Johnston COWA Rhamnaceae
Warnock's snakewood Condalia warnockii M.C. Johnston var. warnockii COWAW Rhamnaceae
wartleaf ceanothus Ceanothus papillosus Torr. & Gray CEPA2 Rhamnaceae
wartleaf ceanothus Ceanothus papillosus Torr. & Gray var. papillosus CEPAP3 Rhamnaceae
wartleaf ceanothus Ceanothus papillosus Torr. & Gray var. roweanus McMinn CEPAR Rhamnaceae
warty sedge Carex verrucosa Muhl. CAVE8 Cyperaceae
wartycabbage Bunias L. BUNIA Brassicaceae
Wasatch rockcress Arabis lasiocarpa Rollins ARLA10 Brassicaceae
washerwoman Alternanthera caracasana Kunth ALCA5 Amaranthaceae
Washington cracked lichen Acarospora washingtonensis H. Magn. ACWA2 Acarosporaceae
Washington hawthorn Crataegus phaenopyrum (L. f.) Medik. CRPH Rosaceae
Washington springbeauty Claytonia washingtoniana (Suksdorf) Suksdorf CLWA6 Portulacaceae
water arum Calla palustris L. CAPA Araceae
water birch Betula occidentalis Hook. BEOC2 Betulaceae
water cracked lichen Acarospora immersa Fink ACIM2 Acarosporaceae
water disc lichen Buellia immersa Lynge BUIM Physciaceae
water foxtail Alopecurus geniculatus L. ALGE2 Poaceae
water foxtail Alopecurus geniculatus L. var. geniculatus ALGEG4 Poaceae
water hemlock Cicuta L. CICUT Apiaceae
water hickory Carya aquatica (Michx. f.) Nutt. CAAQ2 Juglandaceae
water plantain Alisma L. ALISM Alismataceae
water pygmyweed Crassula aquatica (L.) Schoenl. CRAQ Crassulaceae
water sedge Carex aquatilis Wahlenb. CAAQ Cyperaceae
water sedge Carex aquatilis Wahlenb. var. aquatilis CAAQA Cyperaceae
water sedge Carex aquatilis Wahlenb. var. stans (Drej.) Boott CAAQS Cyperaceae
water trumpet Cryptocoryne Fisch. ex Wydl. CRYPT7 Araceae
water wattle Acacia retinodes Schlecht. ACRE2 Fabaceae
water whorlgrass Catabrosa aquatica (L.) Beauv. CAAQ3 Poaceae
water whorlgrass Catabrosa aquatica (L.) Beauv. var. aquatica CAAQA6 Poaceae
waterbuttons Cotula L. COTUL Asteraceae
Waterer's cotoneaster Cotoneaster ×watereri Exell COWA7 Rosaceae
Waterfall's milkvetch Astragalus waterfallii Barneby ASWA3 Fabaceae
Waterfall's sedge Carex latebracteata Waterfall CALA31 Cyperaceae
watergrass Bulbostylis barbata (Rottb.) C.B. Clarke BUBA Cyperaceae
waterhyssop Bacopa Aubl. BACOP Scrophulariaceae
waterhyssop Bacopa procumbens (Miller) Greenman BAPR3 Scrophulariaceae
waterloving hawthorn Crataegus limnophila Sarg. CRLI12 Rosaceae
watermelon Citrullus lanatus (Thunb.) Matsumura & Nakai CILA3 Cucurbitaceae
watermelon Citrullus lanatus (Thunb.) Matsumura & Nakai var. citroides (Bailey) Mansf. CILAC Cucurbitaceae
watermelon Citrullus lanatus (Thunb.) Matsumura & Nakai var. lanatus CILAL Cucurbitaceae
watermelon Citrullus Schrad. CITRU Cucurbitaceae
waterparsnip Berula Bess. ex W.D.J. Koch BERUL Apiaceae
waterplantain Baldellia Parl. BALDE Alismataceae
watershield Brasenia schreberi J.F. Gmel. BRSC Cabombaceae
watersprite Ceratopteris thalictroides (L.) Brongn. CETH2 Parkeriaceae
water-starwort Callitriche L. CALLI6 Callitrichaceae
Waterton Lakes cryptantha Cryptantha sobolifera Payson CRSO3 Boraginaceae
Watson's amaranth Amaranthus watsonii Standl. AMWA Amaranthaceae
Watson's brickellbush Brickellia microphylla (Nutt.) Gray var. watsonii (B.L. Robins.) Welsh BRMIW Asteraceae
Watson's cryptantha Cryptantha watsonii (Gray) Greene CRWA2 Boraginaceae
Watson's dutchman's pipe Aristolochia watsonii Woot. & Standl. ARWA Aristolochiaceae
Watson's goosefoot Chenopodium watsonii A. Nels. CHWA Chenopodiaceae
Watson's saltbush Atriplex watsonii A. Nels. ATWA Chenopodiaceae
wavy scaly cloakfern Astrolepis sinuata (Lag. ex Sw.) Benham & Windham ASSI9 Pteridaceae
wavy scaly cloakfern Astrolepis sinuata (Lag. ex Sw.) Benham & Windham ssp. sinuata ASSIS Pteridaceae
wavyleaf buckbrush Ceanothus foliosus Parry var. medius McMinn CEFOM Rhamnaceae
wavyleaf ceanothus Ceanothus foliosus Parry CEFO Rhamnaceae
wavyleaf ceanothus Ceanothus foliosus Parry var. foliosus CEFOF3 Rhamnaceae
wavyleaf Indian paintbrush Castilleja applegatei Fern. CAAP4 Scrophulariaceae
wavyleaf Indian paintbrush Castilleja applegatei Fern. ssp. applegatei CAAPA2 Scrophulariaceae
wavyleaf Indian paintbrush Castilleja applegatei Fern. ssp. disticha (Eastw.) Chuang & Heckard CAAPD Scrophulariaceae
wavyleaf Indian paintbrush Castilleja applegatei Fern. ssp. martinii (Abrams) Chuang & Heckard CAAPM Scrophulariaceae
wavyleaf Indian paintbrush Castilleja applegatei Fern. ssp. pallida (Eastw.) Chuang & Heckard CAAPP3 Scrophulariaceae
wavyleaf Indian paintbrush Castilleja applegatei Fern. ssp. pinetorum (Fern.) Chuang & Heckard CAAPP4 Scrophulariaceae
wavyleaf soap plant Chlorogalum pomeridianum (DC.) Kunth CHPO3 Liliaceae
wavyleaf soap plant Chlorogalum pomeridianum (DC.) Kunth var. divaricatum (Lindl.) Hoover CHPOD Liliaceae
wavyleaf soap plant Chlorogalum pomeridianum (DC.) Kunth var. minus Hoover CHPOM Liliaceae
wavyleaf soap plant Chlorogalum pomeridianum (DC.) Kunth var. pomeridianum CHPOP4 Liliaceae
wavyleaf thistle Cirsium undulatum (Nutt.) Spreng. CIUN Asteraceae
wavyleaf thistle Cirsium undulatum (Nutt.) Spreng. var. undulatum CIUNU Asteraceae
wavyleaf thoroughwort Chromolaena sinuata (Lam.) King & H.E. Robins. CHSI Asteraceae
wax palm Ceroxylon alpinum Bonpl. ex DC. CEAL11 Arecaceae
waxgourd Benincasa hispida (Thunb.) Cogn. BEHI3 Cucurbitaceae
waxweed Cuphea P. Br. CUPHE Lythraceae
waxy saltbush Atriplex glauca L. ATGL2 Chenopodiaceae
waxy springparsley Cymopterus glaucus Nutt. CYGL Apiaceae
waxydogbane Cycladenia Benth. CYCLA Apocynaceae
waxyfruit hawthorn Crataegus pruinosa (Wendl. f.) K. Koch CRPR2 Rosaceae
weak arctic sedge Carex supina Willd. ex Wahlenb. CASU9 Cyperaceae
weak arctic sedge Carex supina Willd. ex Wahlenb. var. spaniocarpa (Steud.) Boivin CASUS3 Cyperaceae
weak sedge Carex laxa Wahlenb. CALA17 Cyperaceae
weak stellate sedge Carex seorsa Howe CASE6 Cyperaceae
weakleaf burr ragweed Ambrosia confertiflora DC. AMCO3 Asteraceae
weakstem cryptantha Cryptantha flaccida (Dougl. ex Lehm.) Greene CRFL4 Boraginaceae
Webber needlegrass Achnatherum webberi (Thurb.) Barkworth ACWE3 Poaceae
Webber's milkvetch Astragalus webberi Gray ex Brewer & S. Wats. ASWE Fabaceae
Weber's century plant Agave weberi Cels ex Poisson AGWE Agavaceae
Weber's cryptantha Cryptantha weberi I.M. Johnston CRWE2 Boraginaceae
wedge beggarticks Bidens cuneata Sherff BICU Asteraceae
wedge sandmat Chamaesyce deltoidea (Engelm. ex Chapman) Small CHDE7 Euphorbiaceae
wedge sandmat Chamaesyce deltoidea (Engelm. ex Chapman) Small ssp. adhaerens (Small) Herndon CHDEA2 Euphorbiaceae
wedge sandmat Chamaesyce deltoidea (Engelm. ex Chapman) Small ssp. deltoidea CHDED Euphorbiaceae
wedge sandmat Chamaesyce deltoidea (Engelm. ex Chapman) Small ssp. pinetorum (Small) Herndon CHDEP Euphorbiaceae
wedge sandmat Chamaesyce deltoidea (Engelm. ex Chapman) Small ssp. serpyllum (Small) Burch CHDES Euphorbiaceae
wedgeleaf Calotis cuneifolia R. Br. CACU22 Asteraceae
wedgeleaf spleenwort Asplenium cuneatum Lam. ASCU6 Aspleniaceae
wedge-leaf wattle Acacia pravissima F. Muell. ACPR6 Fabaceae
wedgescale saltbush Atriplex truncata (Torr. ex S. Wats.) Gray ATTR Chenopodiaceae
Weed's mariposa lily Calochortus weedii Wood CAWE Liliaceae
Weed's mariposa lily Calochortus weedii Wood var. intermedius Ownbey CAWEI Liliaceae
Weed's mariposa lily Calochortus weedii Wood var. vestus Purdy CAWEV Liliaceae
Weed's mariposa lily Calochortus weedii Wood var. weedii CAWEW Liliaceae
weedy brome Bromus alopecuros Poir. BRAL2 Poaceae
weedy dogfennel Chamaemelum mixtum (L.) All. CHMI5 Asteraceae
weeping bottlebrush Callistemon viminalis (Soland. ex Gaertn.) Cheel [excluded] CAVI23 Myrtaceae
weeping brome Bromus frondosus (Shear) Woot. & Standl. BRFR2 Poaceae
Weigel's bryum moss Bryum weigelii Spreng. in Biehler BRWE70 Bryaceae
Weiser's milkvetch Astragalus beckwithii Torr. & Gray var. weiserensis M.E. Jones ASBEW Fabaceae
Wells' manzanita Arctostaphylos wellsii Knight ARWE Ericaceae
welsh onion Allium fistulosum L. ALFI4 Liliaceae
Welsh's bugseed Corispermum welshii Mosyakin COWE Chenopodiaceae
Welsh's cryptantha Cryptantha welshii Thorne & Higgins CRWE5 Boraginaceae
Welsh's milkweed Asclepias welshii N.& P. Holmgren ASWE3 Asclepiadaceae
Welsh's saltbush Atriplex welshii C.A. Hanson ATWE Chenopodiaceae
Wenatchee Indian paintbrush Castilleja elmeri Fern. CAEL7 Scrophulariaceae
Wendt's water trumpet Cryptocoryne wendtii de Wit CRWE4 Araceae
West African albizzia Albizia adianthifolia (Schumach.) W. Wight ALAD2 Fabaceae
West Indian beggarticks Bidens cynapiifolia Kunth BICY Asteraceae
West Indian cock's comb Celosia nitida Vahl CENI Amaranthaceae
West Indian croton Croton stenophyllus Griseb. CRST6 Euphorbiaceae
West Indian dodder Cuscuta globulosa Benth. CUGL5 Cuscutaceae
West Indian dutchman's pipe Aristolochia bilabiata L. ARBI4 Aristolochiaceae
West Indian false nettle Boehmeria repens (Griseb.) Weddell BORE3 Urticaceae
West Indian flatsedge Cyperus confertus Sw. CYCO2 Cyperaceae
West Indian gherkin Cucumis anguria L. CUAN Cucurbitaceae
West Indian gherkin Cucumis anguria L. var. anguria CUANA Cucurbitaceae
West Indian gherkin Cucumis anguria L. var. longaculeatus J.H. Kirkbride CUANL Cucurbitaceae
West Indian hairsedge Bulbostylis curassavica (Britt.) Britt. ex Kükenth. BUCU Cyperaceae
West Indian joyweed Alternanthera crucis (Moq.) Boldingh ALCR8 Amaranthaceae
West Indian livingvase Aechmea lingulata (L.) Baker AELI Bromeliaceae
West Indian milkberry Chiococca alba (L.) A.S. Hitchc. CHAL8 Rubiaceae
West Indian rattlebox Crotalaria trichotoma Bojer CRTR12 Fabaceae
West Indian spleenwort Asplenium pteropus Kaulfuss ASPT3 Aspleniaceae
West Indian sumac Brunellia comocladiifolia Humb. & Bonpl. BRCO6 Brunelliaceae
West Indian sumac Brunellia comocladiifolia Humb. & Bonpl. ssp. domingensis Cuatrec. BRCOD Brunelliaceae
West Indian swallow-wort Cynanchum ?lineare (Bello) Alain CYLI3 Asclepiadaceae
West Indian treebine Cissus tuberculata Jacq. CITU2 Vitaceae
West Indian treefern Cyathea arborea (L.) Sm. CYAR Cyatheaceae
western astomum moss Astomum occidentale Flow. ASOC5 Pottiaceae
western blue virginsbower Clematis occidentalis (Hornem.) DC. CLOC2 Ranunculaceae
western blue virginsbower Clematis occidentalis (Hornem.) DC. var. dissecta (C.L. Hitchc.) J. Pringle CLOCD Ranunculaceae
western blue virginsbower Clematis occidentalis (Hornem.) DC. var. grosseserrata (Rydb.) J. Pringle CLOCG Ranunculaceae
western blue virginsbower Clematis occidentalis (Hornem.) DC. var. occidentalis CLOCO Ranunculaceae
western columbine Aquilegia formosa Fisch. ex DC. AQFO Ranunculaceae
western cordilleran bunchberry Cornus unalaschkensis Ledeb. COUN Cornaceae
western daisy Astranthium Nutt. ASTRA2 Asteraceae
western dogwood Cornus sericea L. ssp. occidentalis (Torr. & Gray) Fosberg COSEO Cornaceae
western dwarf mistletoe Arceuthobium campylopodum Engelm. ARCA3 Viscaceae
western fox sedge Carex vicaria Bailey CAVI3 Cyperaceae
western giant hyssop Agastache occidentalis (Piper) Heller AGOC Lamiaceae
western hound's tongue Cynoglossum occidentale Gray CYOC Boraginaceae
western Indian paintbrush Castilleja occidentalis Torr. CAOC4 Scrophulariaceae
western inflated sedge Carex exsiccata Bailey CAEX5 Cyperaceae
western milkvetch Astragalus robbinsii (Oakes) Gray var. occidentalis S. Wats. ASROO Fabaceae
western moonwort Botrychium hesperium (Maxon & Clausen) W.H. Wagner & Lellinger BOHE5 Ophioglossaceae
western moss heather Cassiope mertensiana (Bong.) G. Don CAME7 Ericaceae
western moss heather Cassiope mertensiana (Bong.) G. Don var. gracilis (Piper) C.L. Hitchc. CAMEG Ericaceae
western moss heather Cassiope mertensiana (Bong.) G. Don var. mertensiana CAMEM Ericaceae
western needlegrass Achnatherum occidentale (Thurb.) Barkworth ACOC3 Poaceae
western needlegrass Achnatherum occidentale (Thurb.) Barkworth ssp. occidentale ACOCO Poaceae
western oat Avena occidentalis Durieu AVOC Poaceae
western pearly everlasting Anaphalis margaritacea (L.) Benth. ANMA Asteraceae
western red columbine Aquilegia elegantula Greene AQEL Ranunculaceae
western rockjasmine Androsace occidentalis Pursh ANOC2 Primulaceae
western rosinweed Calycadenia DC. CALYC Asteraceae
western sandparsley Ammoselinum giganteum Coult. & Rose AMGI Apiaceae
western sedge Carex occidentalis Bailey CAOC2 Cyperaceae
western singlespike sedge Carex scirpoidea Michx. ssp. pseudoscirpoidea (Rydb.) Dunlop CASCP3 Cyperaceae
western snakeroot Ageratina occidentalis (Hook.) King & H.E. Robins. AGOC2 Asteraceae
western spleenwort Asplenium vespertinum Maxon ASVE3 Aspleniaceae
western springbeauty Claytonia rosea Rydb. CLRO5 Portulacaceae
western spruce dwarf mistletoe Arceuthobium microcarpum (Engelm.) Hawksworth & Wiens ARMI8 Viscaceae
western sweetshrub Calycanthus occidentalis Hook. & Arn. CAOC5 Calycanthaceae
western water hemlock Cicuta douglasii (DC.) Coult. & Rose CIDO Apiaceae
western white clematis Clematis ligusticifolia Nutt. CLLI2 Ranunculaceae
western white clematis Clematis ligusticifolia Nutt. var. brevifolia Nutt. CLLIB Ranunculaceae
western white clematis Clematis ligusticifolia Nutt. var. ligusticifolia CLLIL2 Ranunculaceae
western white pine dwarf mistletoe Arceuthobium monticola Hawksworth, Wiens & Nickrent ARMO13 Viscaceae
western yarrow Achillea millefolium L. var. occidentalis DC. ACMIO Asteraceae
wetforest cyanea Cyanea hamatiflora Rock CYHA6 Campanulaceae
wetforest cyanea Cyanea hamatiflora Rock ssp. hamatiflora CYHAH Campanulaceae
Wetherill's cryptantha Cryptantha wetherillii (Eastw.) Payson CRWE3 Boraginaceae
Wetherill's milkvetch Astragalus wetherillii M.E. Jones ASWE2 Fabaceae
wetsoil rockcress Arabis crucisetosa Constance & Rollins ARCR Brassicaceae
wheat sedge Carex atherodes Spreng. CAAT2 Cyperaceae
wheatgrass Agropyron Gaertn. AGROP2 Poaceae
wheel milkweed Asclepias uncialis Greene ASUN4 Asclepiadaceae
wheel milkweed Asclepias uncialis Greene ssp. uncialis ASUNU2 Asclepiadaceae
Wheeler's disc lichen Buellia wheeleri R. C. Harris BUWH Physciaceae
Wheeler's sandwort Arenaria congesta Nutt. var. wheelerensis Maguire ARCOW Caryophyllaceae
Wheeler's skeletonweed Chaetadelpha wheeleri Gray ex S. Wats. CHWH Asteraceae
Wheeler's thistle Cirsium wheeleri (Gray) Petrak CIWH Asteraceae
wheelscale saltbush Atriplex elegans (Moq.) D. Dietr. ATEL Chenopodiaceae
wheelscale saltbush Atriplex elegans (Moq.) D. Dietr. var. elegans ATELE Chenopodiaceae
wheelscale saltbush Atriplex elegans (Moq.) D. Dietr. var. fasciculata (S. Wats.) M.E. Jones ATELF Chenopodiaceae
wheelscale saltbush Atriplex elegans (Moq.) D. Dietr. var. thornberi M.E. Jones ATELT Chenopodiaceae
whip pussytoes Antennaria flagellaris (Gray) Gray ANFL2 Asteraceae
Whipple cholla Cylindropuntia whipplei (Engelm. & Bigelow) F.M. Knuth CYWH Cactaceae
Whipple's claopodium moss Claopodium whippleanum (Sull. in Whipple & Ives) Ren. & Card. CLWH Leskeaceae
whiskerbush Coryphantha ramillosa Cutak CORA7 Cactaceae
whiskered brome Bromus grossus Desf. ex DC. BRGR5 Poaceae
white alder Alnus rhombifolia Nutt. ALRH2 Betulaceae
white alling Bontia daphnoides L. BODA Myoporaceae
white arctic mountain heather Cassiope tetragona (L.) D. Don CATE11 Ericaceae
white arctic mountain heather Cassiope tetragona (L.) D. Don var. saximontana (Small) C.L. Hitchc. CATES2 Ericaceae
white arctic mountain heather Cassiope tetragona (L.) D. Don var. tetragona CATET Ericaceae
white ballmustard Calepina irregularis (Asso) Thellung CAIR Brassicaceae
white baneberry Actaea pachypoda Ell. ACPA Ranunculaceae
white bear sedge Carex albursina Sheldon CAAL11 Cyperaceae
white bladderflower Araujia sericifera Brot. ARSE8 Asclepiadaceae
white blue eyed Mary Collinsia bartsiifolia Benth. COBA Scrophulariaceae
white blue eyed Mary Collinsia bartsiifolia Benth. var. bartsiifolia COBAB Scrophulariaceae
white blue eyed Mary Collinsia bartsiifolia Benth. var. hirsuta (Kellogg) Pennell COBAH Scrophulariaceae
white blue eyed Mary Collinsia bartsiifolia Benth. var. stricta Newsom COBAS Scrophulariaceae
white bryony Bryonia alba L. BRAL4 Cucurbitaceae
white clintonia Clintonia umbellulata (Michx.) Morong CLUM2 Liliaceae
White Clouds milkvetch Astragalus vexilliflexus Sheldon var. nubilus Barneby ASVEN Fabaceae
white colicroot Aletris farinosa L. ALFA2 Liliaceae
white Colorado columbine Aquilegia caerulea James var. ochroleuca Hook. AQCAO Ranunculaceae
white cypress-pine Callitris columellaris F.J. Muell. CACO2 Cupressaceae
white doll's daisy Boltonia asteroides (L.) L'Hér. BOAS Asteraceae
white doll's daisy Boltonia asteroides (L.) L'Hér. var. asteroides BOASA Asteraceae
white doll's daisy Boltonia asteroides (L.) L'Hér. var. latisquama (Gray) Cronq. BOASL Asteraceae
white doll's daisy Boltonia asteroides (L.) L'Hér. var. recognita (Fern. & Grisc.) Cronq. BOASR Asteraceae
white easterbonnets Antheropeas lanosum (Gray) Rydb. ANLA7 Asteraceae
white edge sedge Carex debilis Michx. CADE5 Cyperaceae
white edge sedge Carex debilis Michx. var. debilis CADED Cyperaceae
white edge sedge Carex debilis Michx. var. intercursa Fern. CADEI Cyperaceae
white edge sedge Carex debilis Michx. var. interjecta Bailey CADEI2 Cyperaceae
white edge sedge Carex debilis Michx. var. pubera Gray CADEP Cyperaceae
white edge sedge Carex debilis Michx. var. rudgei Bailey CADER Cyperaceae
white edge sedge Carex debilis Michx. var. strictior Bailey CADES Cyperaceae
white fairy-lantern Calochortus albus Dougl. ex Benth. CAAL2 Liliaceae
white false gilyflower Allophyllum integrifolium (Brand) A.& V. Grant ALIN3 Polemoniaceae
white fir Abies concolor (Gord. & Glend.) Lindl. ex Hildebr. ABCO Pinaceae
white fir Abies concolor (Gord. & Glend.) Lindl. ex Hildebr. var. concolor ABCOC Pinaceae
white fir Abies concolor (Gord. & Glend.) Lindl. ex Hildebr. var. lowiana (Gord. & Glend.) Lemmon ABCOL Pinaceae
white fringetree Chionanthus virginicus L. CHVI3 Oleaceae
white garlic Allium neapolitanum Cirillo ALNE3 Liliaceae
white giant hyssop Agastache micrantha (Gray) Woot. & Standl. AGMI Lamiaceae
white lady's slipper Cypripedium candidum Muhl. ex Willd. CYCA5 Orchidaceae
white mariposa lily Calochortus eurycarpus S. Wats. CAEU Liliaceae
white marsh marigold Caltha leptosepala DC. CALE4 Ranunculaceae
white marsh marigold Caltha leptosepala DC. ssp. leptosepala CALEL7 Ranunculaceae
white marsh marigold Caltha leptosepala DC. ssp. leptosepala var. leptosepala CALEL8 Ranunculaceae
white moneywort Alysicarpus vaginalis (L.) DC. ALVA2 Fabaceae
White Mountain sedge Carex geophila Mackenzie CAGE Cyperaceae
white pincushion Chaenactis artemisiifolia (Harvey & Gray ex Gray) Gray CHAR Asteraceae
white pygmypoppy Canbya candida Parry ex Gray CACA8 Papaveraceae
white rimmed lichen Aspicilia albomarginata de Lesd. ASAL13 Hymeneliaceae
White River coraldrops Besseya plantaginea (James) Rydb. BEPL Scrophulariaceae
white rosewood Chionanthus domingensis Lam. CHDO4 Oleaceae
white sagebrush Artemisia ludoviciana Nutt. ARLU Asteraceae
white sagebrush Artemisia ludoviciana Nutt. ssp. albula (Woot.) Keck ARLUA Asteraceae
white sagebrush Artemisia ludoviciana Nutt. ssp. candicans (Rydb.) Keck ARLUC8 Asteraceae
white sagebrush Artemisia ludoviciana Nutt. ssp. estesii Chambers ARLUE Asteraceae
white sagebrush Artemisia ludoviciana Nutt. ssp. incompta (Nutt.) Keck ARLUI2 Asteraceae
white sagebrush Artemisia ludoviciana Nutt. ssp. ludoviciana ARLUL2 Asteraceae
white sagebrush Artemisia ludoviciana Nutt. ssp. mexicana (Willd. ex Spreng.) Keck ARLUM2 Asteraceae
white sagebrush Artemisia ludoviciana Nutt. ssp. redolens (Gray) Keck ARLUR Asteraceae
white sagebrush Artemisia ludoviciana Nutt. ssp. sulcata (Rydb.) Keck ARLUS Asteraceae
white sand verbena Abronia mellifera Dougl. ex Hook. ABME Nyctaginaceae
white sapote Casimiroa edulis Llave & Lex. CAED6 Rutaceae
white screwstem Bartonia verna (Michx.) Raf. ex Bart. BAVE2 Gentianaceae
white sedge Carex albida Bailey CAAL4 Cyperaceae
white silk floss tree Chorisia insignis Kunth CHIN22 Bombacaceae
white snakeroot Ageratina altissima (L.) King & H.E. Robins. AGAL5 Asteraceae
white snakeroot Ageratina altissima (L.) King & H.E. Robins. var. altissima AGALA Asteraceae
white snakeroot Ageratina altissima (L.) King & H.E. Robins. var. angustata (Gray) Clewell & Woot. AGALA2 Asteraceae
white snakeroot Ageratina altissima (L.) King & H.E. Robins. var. roanensis (Small) Clewell & Woot. AGALR Asteraceae
white star apple Chrysophyllum albidum G. Don CHAL19 Sapotaceae
white sunbonnets Chaptalia albicans (Sw.) Vent. ex Steud. CHAL18 Asteraceae
white swallow-wort Cynanchum vincetoxicum (L.) Pers. CYVI3 Asclepiadaceae
white tackstem Calycoseris wrightii Gray CAWR Asteraceae
white thistle Cirsium hookerianum Nutt. CIHO Asteraceae
white turtlehead Chelone glabra L. CHGL2 Scrophulariaceae
white wild indigo Baptisia alba (L.) Vent. BAAL Fabaceae
white wild indigo Baptisia alba (L.) Vent. var. alba BAALA Fabaceae
white wormwood Artemisia herba-alba Asso ARHE10 Asteraceae
whitebrush Aloysia gratissima (Gillies & Hook.) Troncoso ALGR2 Verbenaceae
whitebrush Aloysia gratissima (Gillies & Hook.) Troncoso var. gratissima ALGRG Verbenaceae
whitebrush Aloysia gratissima (Gillies & Hook.) Troncoso var. schulziae (Standl.) L. Benson ALGRS Verbenaceae
whitebuttons Anacyclus clavatus (Desf.) Pers. ANCL2 Asteraceae
Whited's milkvetch Astragalus sinuatus Piper ASSI5 Fabaceae
whiteedge flatsedge Cyperus flavicomus Michx. CYFL5 Cyperaceae
whitefelt Indian paintbrush Castilleja lanata Gray ssp. hololeuca (Greene) Chuang & Heckard CALAH Scrophulariaceae
whiteflower albizia Albizia saponaria (Lour.) Blume ex Miq. ALSA10 Fabaceae
whiteflower kurrajong Brachychiton populneum (Schott & Endl.) R. Br. BRPO6 Sterculiaceae
whiteflower rabbitbrush Chrysothamnus albidus (M.E. Jones ex Gray) Greene CHAL9 Asteraceae
whitefoot lipfern Cheilanthes leucopoda Link CHLE3 Pteridaceae
whitehair leather flower Clematis albicoma Wherry CLAL Ranunculaceae
whitehair manzanita Arctostaphylos viridissima (Eastw.) McMinn ARVI7 Ericaceae
whitejacket Aniseia martinicensis (Jacq.) Choisy ANMA4 Convolvulaceae
whitejacket Aniseia martinicensis (Jacq.) Choisy var. nitens (Choisy) O'Donell ANMAN Convolvulaceae
whiteleaf Indian mallow Abutilon hypoleucum Gray ABHY Malvaceae
whiteleaf leather flower Clematis glaucophylla Small CLGL Ranunculaceae
whiteleaf manzanita Arctostaphylos manzanita Parry ARMA Ericaceae
whiteleaf manzanita Arctostaphylos manzanita Parry ssp. glaucescens P.V. Wells ARMAG Ericaceae
whiteleaf manzanita Arctostaphylos manzanita Parry ssp. manzanita ARMAM2 Ericaceae
whitemargin pussytoes Antennaria marginata Greene ANMA5 Asteraceae
whitemargin sandmat Chamaesyce albomarginata (Torr. & Gray) Small CHAL11 Euphorbiaceae
whitemouth dayflower Commelina erecta L. COER Commelinaceae
whitemouth dayflower Commelina erecta L. var. angustifolia (Michx.) Fern. COERA Commelinaceae
whitemouth dayflower Commelina erecta L. var. deamiana Fern. COERD Commelinaceae
whitemouth dayflower Commelina erecta L. var. erecta COERE Commelinaceae
whiteray leastdaisy Chaetopappa bellidifolia (Gray & Engelm.) Shinners CHBE2 Asteraceae
whitescale sedge Carex xerantica Bailey CAXE Cyperaceae
whitespine thistle Cirsium clokeyi Blake CICL2 Asteraceae
whitespot giant arum Amorphophallus paeoniifolius (Dennst.) Nicolson AMPA13 Araceae
whitestem clarkia Clarkia gracilis (Piper) A. Nels. & J.F. Macbr. ssp. albicaulis (Jepson) H.F. & M.E. Lewis CLGRA Onagraceae
whitestem distaff thistle Carthamus leucocaulos Sm. CALE52 Asteraceae
whitestem milkweed Asclepias albicans S. Wats. ASAL Asclepiadaceae
whitethorn acacia Acacia constricta Benth. ACCO2 Fabaceae
whitethorn acacia Acacia constricta Benth. var. constricta ACCOC Fabaceae
whitethorn acacia Acacia constricta Benth. var. paucispina Woot. & Standl. ACCOP9 Fabaceae
whitethorn ceanothus Ceanothus cordulatus Kellogg CECO Rhamnaceae
whitetinge sedge Carex albicans Willd. ex Spreng. CAAL25 Cyperaceae
whitetinge sedge Carex albicans Willd. ex Spreng. var. albicans CAALA Cyperaceae
whitetop Cardaria Desv. CARDA2 Brassicaceae
whitetop Cardaria draba (L.) Desv. CADR Brassicaceae
whitewash cornflower Centaurea dealbata Willd. [excluded] CEDE15 Asteraceae
whiteweed Ageratum L. AGERA Asteraceae
whitewood Coccoloba krugii Lindau COKR Polygonaceae
Whitney's clarkia Clarkia amoena (Lehm.) A. Nels. & J.F. Macbr. ssp. whitneyi (Gray) H.F. & M.E. Lewis CLAMW Onagraceae
Whitney's sedge Carex whitneyi Olney CAWH Cyperaceae
wholeleaf Indian paintbrush Castilleja integra Gray CAIN14 Scrophulariaceae
wholeleaf Indian paintbrush Castilleja integra Gray var. gloriosa (Britt.) Cockerell CAING Scrophulariaceae
wholeleaf Indian paintbrush Castilleja integra Gray var. integra CAINI5 Scrophulariaceae
whorled milkweed Asclepias verticillata L. ASVE Asclepiadaceae
whorled tickseed Coreopsis verticillata L. COVE5 Asteraceae
whorlgrass Catabrosa Beauv. CATAB Poaceae
widefruit sedge Carex angustata Boott CAAN15 Cyperaceae
wideleaf cinclidium moss Cinclidium latifolium Lindb. CILA70 Mniaceae
wideleaf crumia moss Crumia latifolia (Kindb. in Mac.) Schof. CRLA10 Pottiaceae
wideleaf Indian paintbrush Castilleja exserta (Heller) Chuang & Heckard ssp. latifolia (S. Wats.) Chuang & Heckard CAEXL Scrophulariaceae
wideleaf polargrass Arctagrostis latifolia (R. Br.) Griseb. ARLA2 Poaceae
wideleaf polargrass Arctagrostis latifolia (R. Br.) Griseb. ssp. arundinacea (Trin.) Tzvelev ARLAA5 Poaceae
wideleaf polargrass Arctagrostis latifolia (R. Br.) Griseb. ssp. latifolia ARLAL6 Poaceae
widewing springparsley Cymopterus purpurascens (Gray) M.E. Jones CYPU Apiaceae
widow's milkvetch Astragalus layneae Greene ASLA8 Fabaceae
widow's sedge Carex distenta Kunze CADI17 Cyperaceae
Wiebke's beggarticks Bidens wiebkei Sherff BIWI Asteraceae
Wiegand's sedge Carex wiegandii Mackenzie CAWI7 Cyperaceae
Wieslander's manzanita Arctostaphylos manzanita Parry ssp. wieslanderi P.V. Wells ARMAW Ericaceae
wig knapweed Centaurea phrygia L. CEPH Asteraceae
Wiggins' croton Croton wigginsii L.C. Wheeler CRWI2 Euphorbiaceae
Wiggins' swallow-wort Cynanchum wigginsii Shinners CYWI4 Asclepiadaceae
Wilcox's barberry Berberis wilcoxii Kearney BEWI Berberidaceae
wild ackee Cupania americana L. CUAM Sapindaceae
wild basil Clinopodium vulgare L. CLVU Lamiaceae
wild birdnest fern Asplenium serratum L. ASSE9 Aspleniaceae
wild bishop Bifora radians Bieb. BIRA Apiaceae
wild cabbage Caulanthus S. Wats. CAULA Brassicaceae
wild celery Apium graveolens L. APGR2 Apiaceae
wild celery Apium graveolens L. var. dulce (P. Mill.) DC. APGRD Apiaceae
wild century plant Agave neglecta Small AGNE3 Agavaceae
wild chervil Anthriscus sylvestris (L.) Hoffmann ANSY Apiaceae
wild chives Allium schoenoprasum L. ALSC Liliaceae
wild chives Allium schoenoprasum L. var. schoenoprasum ALSCS2 Liliaceae
wild chives Allium schoenoprasum L. var. sibiricum (L.) Hartman ALSCS Liliaceae
wild cineraria Cineraria saxifraga DC. CISA4 Asteraceae
wild cinnamon Canella P. Br. CANEL Canellaceae
wild cinnamon Canella winteriana (L.) Gaertn. CAWI Canellaceae
wild coffee-bean Bauhinia petersiana Bolle ssp. macrantha (Oliv.) Brummitt & J. H. Ross BAPEM2 Fabaceae
wild comfrey Cynoglossum virginianum L. CYVI Boraginaceae
wild comfrey Cynoglossum virginianum L. var. boreale (Fern.) Cooperrider CYVIB Boraginaceae
wild comfrey Cynoglossum virginianum L. var. virginianum CYVIV Boraginaceae
wild cosmos Cosmos caudatus Kunth COCA21 Asteraceae
wild custard-apple Annona senegalensis Pers. ANSE16 Annonaceae
wild foxglove Ceratotheca triloba (Bernh.) E. Mey. ex Hook. f. CETR5 Pedaliaceae
wild garlic Allium vineale L. ALVI Liliaceae
wild garlic Allium vineale L. ssp. vineale ALVIV Liliaceae
wild honeytree Casearia decandra Jacq. CADE11 Flacourtiaceae
wild indigo Baptisia Vent. BAPTI Fabaceae
wild leek Allium tricoccum Ait. ALTR3 Liliaceae
wild lime Adelia L. ADELI Euphorbiaceae
wild lime Adelia ricinella L. ADRI Euphorbiaceae
wild marrow Croton astroites Dry. CRAS3 Euphorbiaceae
wild oat Avena fatua L. AVFA Poaceae
wild onion Allium ascalonicum L. ALAS2 Liliaceae
wild sandheath Centaurea eriophora L. CEER Asteraceae
wild sarsaparilla Aralia nudicaulis L. ARNU2 Araliaceae
wild tamarind Cojoba arborea (L.) Britt. & Rose COAR9 Fabaceae
wildginger Asarum L. ASARU Aristolochiaceae
Wilkes' acalypha Acalypha amentacea Roxb. ssp. wilkesiana (Muell.-Arg.) Fosberg ACAMW Euphorbiaceae
Wilkins' bellflower Campanula wilkinsiana Greene CAWI8 Campanulaceae
Willamette Valley bittercress Cardamine penduliflora O.E. Schulz CAPE2 Brassicaceae
Willdenow's croton Croton willdenowii G.L. Webster CRWI5 Euphorbiaceae
Willdenow's sedge Carex basiantha Steud. CABA24 Cyperaceae
Willdenow's sedge Carex superata Naczi, Reznicek, and B.A. Ford CASU67 Cyperaceae
Willdenow's sedge Carex willdenowii Schkuhr ex Willd. CAWI2 Cyperaceae
Willey's dot lichen Arthonia willeyi Tuck. ARWI2 Arthoniaceae
Williams' hawthorn Crataegus williamsii Egglest. CRWI3 Rosaceae
Williams' milkvetch Astragalus williamsii Rydb. ASWI Fabaceae
Williams' miterwort Conimitella williamsii (D.C. Eat.) Rydb. COWI Saxifragaceae
Williams' sedge Carex williamsii Britt. CAWI3 Cyperaceae
Williams' springparsley Cymopterus williamsii R.L. Hartman & Constance CYWI3 Apiaceae
willow cyanea Cyanea salicina H. Lév. CYSA9 Campanulaceae
willow hawthorn Crataegus saligna Greene CRSA2 Rosaceae
willow ragwort Barkleyanthus (Kunth) H.E. Robins. & Brett. BARKL Asteraceae
willow ragwort Barkleyanthus salicifolius (Kunth) H.E. Robins. & Brett. BASA5 Asteraceae
willowleaf angelon Angelonia salicariifolia Humb. & Bonpl. ANSA3 Scrophulariaceae
willowleaf spleenwort Asplenium salicifolium L. ASSA6 Aspleniaceae
Wilson's bartramidula moss Bartramidula wilsonii Bruch & Schimp. in B.S.G. BAWI Bartramiaceae
Wilson's maidenhair Adiantum wilsonii Hook. ADWI Pteridaceae
Wilson's milkvetch Astragalus lentiginosus Dougl. ex Hook. var. wilsonii (Greene) Barneby ASLEW Fabaceae
Wind River rockcress Arabis williamsii Rollins ARWI Brassicaceae
Wind River rockcress Arabis williamsii Rollins var. williamsii ARWIW Brassicaceae
Windham's scaly cloakfern Astrolepis windhamii Benham ASWI4 Pteridaceae
winding mariposa lily Calochortus flexuosus S. Wats. CAFL Liliaceae
windmill grass Chloris Sw. CHLOR Poaceae
windmills Allionia L. ALLIO Nyctaginaceae
winecup Callirhoe digitata Nutt. CADI2 Malvaceae
winecup clarkia Clarkia purpurea (W. Curtis) A. Nels. & J.F. Macbr. CLPU2 Onagraceae
winecup clarkia Clarkia purpurea (W. Curtis) A. Nels. & J.F. Macbr. ssp. purpurea CLPUP Onagraceae
winecup clarkia Clarkia purpurea (W. Curtis) A. Nels. & J.F. Macbr. ssp. quadrivulnera (Dougl. ex Lindl.) H.F. & M.E. Lewis CLPUQ Onagraceae
winecup clarkia Clarkia purpurea (W. Curtis) A. Nels. & J.F. Macbr. ssp. viminea (Dougl. ex Hook.) H.F. & M.E. Lewis CLPUV Onagraceae
wineflower Boerhavia anisophylla Torr. BOAN Nyctaginaceae
winged cryptantha Cryptantha holoptera (Gray) J.F. Macbr. CRHO3 Boraginaceae
winged milkvetch Astragalus pterocarpus S. Wats. ASPT2 Fabaceae
winged pigweed Cycloloma atriplicifolium (Spreng.) Coult. CYAT Chenopodiaceae
winged plumeless thistle Carduus tenuiflorus W. Curtis CATE2 Asteraceae
winged water-starwort Callitriche marginata Torr. CAMA3 Callitrichaceae
winged wattle Acacia alata R. Br. ACAL16 Fabaceae
wingfruit suncup Camissonia pterosperma (S. Wats.) Raven CAPT Onagraceae
wingnut cryptantha Cryptantha pterocarya (Torr.) Greene CRPT Boraginaceae
wingnut cryptantha Cryptantha pterocarya (Torr.) Greene var. cycloptera (Greene) J.F. Macbr. CRPTC Boraginaceae
wingnut cryptantha Cryptantha pterocarya (Torr.) Greene var. pterocarya CRPTP2 Boraginaceae
wingnut cryptantha Cryptantha pterocarya (Torr.) Greene var. stenoloba I.M. Johnston CRPTS Boraginaceae
wingstem ayenia Ayenia ardua Cristobal AYAR Sterculiaceae
winter bentgrass Agrostis hyemalis (Walt.) B.S.P. AGHY Poaceae
winter grapefern Botrychium lunarioides (Michx.) Sw. BOLU2 Ophioglossaceae
winter hazel Corylopsis Sieb. & Zucc. CORYL2 Hamamelidaceae
winter hazel Corylopsis sinensis Hemsl. COSI12 Hamamelidaceae
winter squash Cucurbita maxima Duchesne CUMA3 Cucurbitaceae
winter squash Cucurbita maxima Duchesne ssp. andreana (Naudin) Filov CUMAA Cucurbitaceae
wintergreen barberry Berberis julianae Schneid. BEJU4 Berberidaceae
wire bluestem Andropogon gracilis Spreng. ANGR5 Poaceae
wire sedge Carex tenax Chapman CATE12 Cyperaceae
wiry flatsedge Cyperus filiformis Sw. CYFI4 Cyperaceae
Wisley barberry Berberis wisleyensis Ahrendt BEWI3 Berberidaceae
witch's hair lichen Alectoria Ach. ALECT3 Alectoriaceae
witch's hair lichen Alectoria fallacina Mot. ALFA60 Alectoriaceae
witch's hair lichen Alectoria lata (Taylor) Lindsay ALLA9 Alectoriaceae
witch's hair lichen Alectoria nigricans (Ach.) Nyl. ALNI60 Alectoriaceae
witch's hair lichen Alectoria ochroleuca (Hoffm.) A. Massal. ALOC60 Alectoriaceae
witch's hair lichen Alectoria sarmentosa (Ach.) Ach. ALSA9 Alectoriaceae
witch's hair lichen Alectoria sarmentosa (Ach.) Ach. ssp. sarmentosa ALSAS2 Alectoriaceae
witch's hair lichen Alectoria sarmentosa (Ach.) Ach. ssp. vexillifera (Nyl.) D. Hawksw. ALSAV Alectoriaceae
withe Cydista Miers CYDIS Bignoniaceae
withering flatsedge Cyperus fugax Liebm. CYFU9 Cyperaceae
Wittmann's milkvetch Astragalus wittmannii Barneby ASWI3 Fabaceae
Wolf's opuntia Cylindropuntia wolfii (L. Benson) J. Rebman CYWO Cactaceae
Wolf's saltweed Atriplex wolfii S. Wats. ATWO Chenopodiaceae
wolfsbane Aconitum vulparia Reichb. ex Sprengel ACVU2 Ranunculaceae
woman's tobacco Antennaria plantaginifolia (L.) Richards. ANPL Asteraceae
woman's tongue Albizia lebbeck (L.) Benth. ALLE Fabaceae
wonderbean Canavalia ensiformis (L.) DC. CAEN4 Fabaceae
wonderful cryptantha Cryptantha mirabunda Brand CRMI7 Boraginaceae
wood anemone Anemone quinquefolia L. ANQU Ranunculaceae
wood reedgrass Calamagrostis perplexa Scribn. CAPE10 Poaceae
Woodbury's lidflower Calyptranthes woodburyi Alain CAWO5 Myrtaceae
woodland angelica Angelica sylvestris L. ANSY2 Apiaceae
woodland bittercress Cardamine flexuosa With. CAFL14 Brassicaceae
woodland burdock Arctium vulgare (Hill) Evans ARVU2 Asteraceae
woodland calamint Calamintha sylvatica Bromf. CASY6 Lamiaceae
woodland calamint Calamintha sylvatica Bromf. ssp. ascendens (Jord.) P.W. Ball CASYA Lamiaceae
woodland climbing bamboo Arthrostylidium multispicatum Pilger ARMU2 Poaceae
woodland coffee Bunchosia L.C. Rich. ex Kunth BUNCH Malpighiaceae
woodland coffee Bunchosia polystachia (Andrews) DC. BUPO5 Malpighiaceae
woodland creepingfern Bolbitis pergamentacea (Maxon) Ching BOPE Dryopteridaceae
woodland crocus Crocus tommasinianus Herbert CRTO8 Iridaceae
woodland mirrorplant Coprosma rhynchocarpa Gray CORH Rubiaceae
woodland poppymallow Callirhoe papaver (Cav.) Gray CAPA2 Malvaceae
woodland sensitive pea Chamaecrista calycioides (DC. ex Colladon) Greene CHCA26 Fabaceae
woodland tickseed Coreopsis pulchra Boynt. COPU9 Asteraceae
woodoats Chasmanthium Link CHASM Poaceae
woodreed Cinna L. CINNA Poaceae
woodruff Asperula L. ASPER2 Rubiaceae
Woodruff's milkvetch Astragalus woodruffii M.E. Jones ASWO Fabaceae
woodrush flatsedge Cyperus entrerianus Boeckl. CYEN2 Cyperaceae
woodrush sedge Carex luzulina Olney CALU7 Cyperaceae
woodrush sedge Carex luzulina Olney var. ablata (Bailey) F.J. Herm. CALUA Cyperaceae
woodrush sedge Carex luzulina Olney var. atropurpurea Dorn CALUA3 Cyperaceae
woodrush sedge Carex luzulina Olney var. luzulina CALUL2 Cyperaceae
woody goldenrod Chrysoma pauciflosculosa (Michx.) Greene CHPA18 Asteraceae
woody milkvetch Astragalus miser Dougl. var. hylophilus (Rydb.) Barneby ASMIH Fabaceae
woody rockcress Arabis suffrutescens S. Wats. ARSU2 Brassicaceae
woody rockcress Arabis suffrutescens S. Wats. var. suffrutescens ARSUS Brassicaceae
woodypod milkvetch Astragalus sclerocarpus Gray ASSC6 Fabaceae
woodyroot milkvetch Astragalus riparius Barneby ASRI Fabaceae
wool grass Anthephora pubescens Nees ANPU15 Poaceae
woolflower Celosia trigyna L. CETR7 Amaranthaceae
woolly angelica Angelica tomentosa S. Wats. ANTO Apiaceae
woolly bellflower Campanula lanata Friv. CALA67 Campanulaceae
woolly bluestar Amsonia tomentosa Torr. & Frém. AMTO2 Apocynaceae
woolly bluestar Amsonia tomentosa Torr. & Frém. var. stenophylla Kearney & Peebles AMTOS Apocynaceae
woolly bluestar Amsonia tomentosa Torr. & Frém. var. tomentosa AMTOT Apocynaceae
woolly breeches Amsinckia spectabilis Fisch. & C.A. Mey. AMSP3 Boraginaceae
woolly brickellbush Brickellia incana Gray BRIN Asteraceae
woolly brome Bromus lanatipes (Shear) Rydb. BRLA6 Poaceae
woolly burdock Arctium tomentosum P. Mill. ARTO Asteraceae
woolly butterflybush Buddleja marrubiifolia Benth. BUMA Buddlejaceae
woolly chaffhead Carphephorus tomentosus (Michx.) Torr. & Gray CATO5 Asteraceae
woolly desert marigold Baileya pleniradiata Harvey & Gray ex Gray BAPL3 Asteraceae
woolly distaff thistle Carthamus lanatus L. CALA20 Asteraceae
woolly distaff thistle Carthamus lanatus L. ssp. creticus (L.) Holmboe CALAC3 Asteraceae
woolly distaff thistle Carthamus lanatus L. ssp. lanatus CALAL10 Asteraceae
woolly dutchman's pipe Aristolochia tomentosa Sims ARTO3 Aristolochiaceae
woolly easterbonnets Antheropeas wallacei (Gray) Rydb. ANWA Asteraceae
woolly fruit burr ragweed Ambrosia eriocentra (Gray) Payne AMER Asteraceae
woolly goat chicory Agoseris apargioides (Less.) Greene AGAP2 Asteraceae
woolly goat chicory Agoseris apargioides (Less.) Greene var. apargioides AGAPA Asteraceae
woolly goat chicory Agoseris apargioides (Less.) Greene var. eastwoodiae (Fedde) Munz AGAPE Asteraceae
woolly goat chicory Agoseris apargioides (Less.) Greene var. maritima (Sheldon) Q. Jones ex Cronq. AGAPM Asteraceae
woolly hawthorn Crataegus lanuginosa Sarg. CRLA3 Rosaceae
woolly lipfern Cheilanthes tomentosa Link CHTO2 Pteridaceae
woolly locoweed Astragalus mollissimus Torr. ASMO7 Fabaceae
woolly locoweed Astragalus mollissimus Torr. var. bigelovii (Gray) Barneby ASMOB Fabaceae
woolly locoweed Astragalus mollissimus Torr. var. coryi Tidestrom ASMOC Fabaceae
woolly locoweed Astragalus mollissimus Torr. var. earlei (Greene ex Rydb.) Tidestrom ASMOE Fabaceae
woolly locoweed Astragalus mollissimus Torr. var. marcidus (Greene ex Rydb.) Barneby ASMOM Fabaceae
woolly locoweed Astragalus mollissimus Torr. var. matthewsii (S. Wats.) Barneby ASMOM2 Fabaceae
woolly locoweed Astragalus mollissimus Torr. var. mogollonicus (Greene) Barneby ASMOM3 Fabaceae
woolly locoweed Astragalus mollissimus Torr. var. mollissimus ASMOM5 Fabaceae
woolly locoweed Astragalus mollissimus Torr. var. thompsoniae (S. Wats.) Barneby ASMOT Fabaceae
woolly maidenhair Adiantum villosum L. ADVI Pteridaceae
woolly milkweed Asclepias vestita Hook. & Arn. ASVE2 Asclepiadaceae
woolly milkweed Asclepias vestita Hook. & Arn. ssp. vestita ASVEV Asclepiadaceae
woolly pawpaw Asimina incana (Bartr.) Exell ASIN12 Annonaceae
woolly pussytoes Antennaria lanata (Hook.) Greene ANLA3 Asteraceae
woolly sedge Carex pellita Muhl. ex Willd. CAPE42 Cyperaceae
woolly sunbonnets Chaptalia tomentosa Vent. CHTO Asteraceae
woollyfruit sedge Carex lasiocarpa Ehrh. CALA11 Cyperaceae
woollyleaf burr ragweed Ambrosia grayi (A. Nels.) Shinners AMGR5 Asteraceae
woollyleaf manzanita Arctostaphylos tomentosa (Pursh) Lindl. ARTO2 Ericaceae
woollyleaf manzanita Arctostaphylos tomentosa (Pursh) Lindl. ssp. bracteosa (DC.) J.E. Adams ARTOB Ericaceae
woollyleaf manzanita Arctostaphylos tomentosa (Pursh) Lindl. ssp. crinita (J.E. Adams ex McMinn) Gankin ARTOC2 Ericaceae
woollyleaf manzanita Arctostaphylos tomentosa (Pursh) Lindl. ssp. eastwoodiana P.V. Wells ARTOE Ericaceae
woollyleaf manzanita Arctostaphylos tomentosa (Pursh) Lindl. ssp. insulicola P.V. Wells ARTOI Ericaceae
woollyleaf manzanita Arctostaphylos tomentosa (Pursh) Lindl. ssp. tomentosa ARTOT3 Ericaceae
woollypod milkvetch Astragalus purshii Dougl. ex Hook. ASPU9 Fabaceae
woollypod milkvetch Astragalus purshii Dougl. ex Hook. var. concinnus Barneby ASPUC Fabaceae
woollypod milkvetch Astragalus purshii Dougl. ex Hook. var. glareosus (Dougl. ex Hook.) Barneby ASPUG2 Fabaceae
woollypod milkvetch Astragalus purshii Dougl. ex Hook. var. lagopinus (Rydb.) Barneby ASPUL Fabaceae
woollypod milkvetch Astragalus purshii Dougl. ex Hook. var. lectulus (S. Wats.) M.E. Jones ASPUL2 Fabaceae
woollypod milkvetch Astragalus purshii Dougl. ex Hook. var. pumilio Barneby ASPUP Fabaceae
woollypod milkvetch Astragalus purshii Dougl. ex Hook. var. purshii ASPUP7 Fabaceae
woollypod milkvetch Astragalus purshii Dougl. ex Hook. var. tinctus M.E. Jones ASPUT Fabaceae
woollypod milkweed Asclepias eriocarpa Benth. ASER Asclepiadaceae
woollysheath threeawn Aristida lanosa Muhl. ex Ell. ARLA6 Poaceae
woolyleaf ceanothus Ceanothus tomentosus Parry CETO Rhamnaceae
Wooton's hawthorn Crataegus wootoniana Egglest. CRWO Rosaceae
Wooton's holdback Caesalpinia wootonii (Britt.) Eifert ex Isely CAWO3 Fabaceae
Wooton's sedge Carex wootonii Mackenzie CAWO Cyperaceae
Wooton's threeawn Aristida pansa Woot. & Standl. ARPA9 Poaceae
wormseed Chenopodium aristatum L. CHAR16 Chenopodiaceae
wormseed sandmat Chamaesyce vermiculata (Raf.) House CHVE5 Euphorbiaceae
Wormskjold's aplodon moss Aplodon wormskjoldii (Hornem.) Kindb. APWO70 Splachnaceae
wretched sedge Carex misera Buckl. CAMI17 Cyperaceae
Wright's amaranth Amaranthus wrightii S. Wats. AMWR Amaranthaceae
Wright's baccharis Baccharis wrightii Gray BAWR Asteraceae
Wright's beardgrass Bothriochloa wrightii (Hack.) Henr. BOWR2 Poaceae
Wright's beebrush Aloysia wrightii (Gray) Heller ALWR Verbenaceae
Wright's bird's beak Cordylanthus wrightii Gray COWR2 Scrophulariaceae
Wright's bird's beak Cordylanthus wrightii Gray ssp. tenuifolius (Pennell) Chuang & Heckard COWRT Scrophulariaceae
Wright's bird's beak Cordylanthus wrightii Gray ssp. wrightii COWRW Scrophulariaceae
Wright's blue eyed Mary Collinsia torreyi Gray var. wrightii (S. Wats.) I.M. Johnston COTOW Scrophulariaceae
Wright's bryum moss Bryum wrightii Sull. & Lesq. BRWR70 Bryaceae
Wright's catkin mistletoe Antidaphne wrightii (Griseb.) Kuijt ANWR6 Eremolepidaceae
Wright's desert honeysuckle Anisacanthus quadrifidus (Vahl) Nees ANQU2 Acanthaceae
Wright's desert honeysuckle Anisacanthus quadrifidus (Vahl) Nees var. wrightii (Torr.) Henrickson ANQUW Acanthaceae
Wright's dogweed Adenophyllum wrightii Gray ADWR Asteraceae
Wright's dutchman's pipe Aristolochia wrightii Seem. ARWR2 Aristolochiaceae
Wright's flatsedge Cyperus dipsaceus Liebamann CYDI15 Cyperaceae
Wright's flowering fern Anemia wrightii Baker ANWR4 Anemiaceae
Wright's golden saxifrage Chrysosplenium wrightii Franch. & Savigny CHWR2 Saxifragaceae
Wright's golden saxifrage Chrysosplenium wrightii Franch. & Savigny var. beringianum (Rose) Hara CHWRB Saxifragaceae
Wright's golden saxifrage Chrysosplenium wrightii Franch. & Savigny var. wrightii CHWRW Saxifragaceae
Wright's Indian mallow Abutilon wrightii Gray ABWR Malvaceae
Wright's lipfern Cheilanthes wrightii Hook. CHWR Pteridaceae
Wright's milkvetch Astragalus wrightii Gray ASWR Fabaceae
Wright's orange lichen Caloplaca wrightii (Willey) Fink CAWR3 Teloschistaceae
Wright's saltbush Atriplex wrightii S. Wats. ATWR Chenopodiaceae
Wright's sensitive pea Chamaecrista serpens (L.) Greene var. wrightii (Gray) Irwin & Barneby CHSEW Fabaceae
Wright's snakeroot Ageratina wrightii (Gray) King & H.E. Robins. AGWR2 Asteraceae
Wright's thistle Cirsium wrightii Gray CIWR Asteraceae
Wright's threeawn Aristida purpurea Nutt. var. wrightii (Nash) Allred ARPUW Poaceae
Wright's trumpets Acleisanthes wrightii (Gray) Benth. & Hook. f. ex Hemsl. ACWR3 Nyctaginaceae
Wright's waxweed Cuphea wrightii Gray CUWR Lythraceae
Wright's yellowshow Amoreuxia wrightii Gray AMWR2 Bixaceae
wrightwort Carlowrightia Gray CARLO Acanthaceae
wrinkled cryptantha Cryptantha rugulosa (Payson) Payson CRRU4 Boraginaceae
wrinkled jointtail grass Coelorachis rugosa (Nutt.) Nash CORU3 Poaceae
wrinkled spineflower Chorizanthe corrugata (Torr.) Torr. & Gray CHCO6 Polygonaceae
wrinkleseed pygmyweed Crassula saginoides (Maxim.) Bywater & Wickens CRSA7 Crassulaceae
wrinklewing springparsley Cymopterus corrugatus M.E. Jones CYCO4 Apiaceae
wyalong wattle Acacia cardiophylla A. Cunn. ex Benth. ACCA27 Fabaceae
Wyoming besseya Besseya wyomingensis (A. Nels.) Rydb. BEWY Scrophulariaceae
Wyoming big sagebrush Artemisia tridentata Nutt. ssp. wyomingensis Beetle & Young ARTRW8 Asteraceae
Wyoming Indian paintbrush Castilleja linariifolia Benth. CALI4 Scrophulariaceae
Wyoming sand verbena Abronia ammophila Greene ABAM3 Nyctaginaceae
Wyoming thistle Cirsium pulcherrimum (Rydb.) K. Schum. CIPU3 Asteraceae
Wyoming threetip sagebrush Artemisia tripartita Rydb. ssp. rupicola Beetle ARTRR2 Asteraceae
Yakima bird's-beak Cordylanthus capitatus Nutt. ex Benth. COCA7 Scrophulariaceae
Yakima milkvetch Astragalus reventiformis (Rydb.) Barneby ASRE6 Fabaceae
Yampa River cryptantha Cryptantha stricta (Osterhout) Payson CRST5 Boraginaceae
yarran Acacia omalophylla A. Cunn. ex Benth. ACOM Fabaceae
yarrow Achillea ageratifolia (Sibth. & Smith) Boiss. ACAG Asteraceae
yarrow Achillea L. ACHIL Asteraceae
yauco Cordia gerascanthus L. COGE Boraginaceae
ye gu Aeginetia indica L. AEIN6 Orobanchaceae
yellow balsam Croton flavens L. CRFL23 Euphorbiaceae
yellow birch Betula alleghaniensis Britt. BEAL2 Betulaceae
yellow birch Betula alleghaniensis Britt. var. alleghaniensis BEALA Betulaceae
yellow birch Betula alleghaniensis Britt. var. macrolepis (Fern.) Brayshaw BEALM Betulaceae
yellow bloodwood Corymbia eximia (Schauer) K. D. Hill & L. A. S. Johnson COEX2 Myrtaceae
yellow bluestem Bothriochloa ischaemum (L.) Keng BOIS Poaceae
yellow bluestem Bothriochloa ischaemum (L.) Keng var. ischaemum BOISI Poaceae
yellow bluestem Bothriochloa ischaemum (L.) Keng var. songarica (Rupr. ex Fisch. & C.A. Mey.) Celarier & Harlan BOISS Poaceae
yellow buckeye Aesculus flava Ait. AEFL Hippocastanaceae
yellow bugle Ajuga chamaepitys (L.) Schreb. AJCH Lamiaceae
yellow chiodecton lichen Chiodecton ochroleucum Zahlbr. CHOC4 Opegraphaceae
yellow colicroot Aletris lutea Small ALLU Liliaceae
yellow columbine Aquilegia flavescens S. Wats. AQFL Ranunculaceae
yellow columbine Aquilegia flavescens S. Wats. var. flavescens AQFLF Ranunculaceae
yellow columbine Aquilegia flavescens S. Wats. var. miniata A. Nels. & J.F. Macbr. AQFLM Ranunculaceae
yellow columbine Aquilegia flavescens S. Wats. var. rubicunda (Tidestrom) Welsh AQFLR Ranunculaceae
yellow coralroot Corallorhiza trifida Chatelain COTR18 Orchidaceae
yellow crocus Crocus flavus Weston CRFL7 Iridaceae
yellow crownvetch Coronilla scorpioides (L.) W.D.J. Koch COSC5 Fabaceae
yellow cups Camissonia brevipes (Gray) Raven CABR23 Onagraceae
yellow flatsedge Cyperus flavescens L. CYFL Cyperaceae
yellow flymallow Cienfuegosia drummondii (Gray) Lewt. CIDR Malvaceae
yellow fumewort Corydalis flavula (Raf.) DC. COFL3 Fumariaceae
yellow giant hyssop Agastache nepetoides (L.) Kuntze AGNE2 Lamiaceae
yellow hairgrass Aira praecox L. AIPR Poaceae
yellow Indian mallow Abutilon malacum S. Wats. ABMA3 Malvaceae
yellow Indian paintbrush Castilleja flava S. Wats. CAFL7 Scrophulariaceae
yellow Indian paintbrush Castilleja flava S. Wats. var. flava CAFLF3 Scrophulariaceae
yellow joyweed Alternanthera flavescens Kunth ALFL Amaranthaceae
yellow mariposa Calochortus superbus Purdy ex J.T. Howell CASU3 Liliaceae
yellow mariposa lily Calochortus luteus Dougl. ex Lindl. CALU9 Liliaceae
yellow marsh marigold Caltha palustris L. CAPA5 Ranunculaceae
yellow marsh marigold Caltha palustris L. var. palustris CAPAP6 Ranunculaceae
yellow marsh marigold Caltha palustris L. var. radicans (J.R. Forst.) Beck CAPAR3 Ranunculaceae
yellow milkvetch Astragalus flavus Nutt. ASFL Fabaceae
yellow monkshood Aconitum anthora L. ACAN8 Ranunculaceae
yellow nicker Caesalpinia bonduc (L.) Roxb. CABO6 Fabaceae
yellow nutsedge Cyperus esculentus L. CYES Cyperaceae
yellow nutsedge Cyperus esculentus L. var. esculentus L. [excluded] CYESE2 Cyperaceae
yellow nutsedge Cyperus esculentus L. var. hermannii (Buckl.) Britt. CYESH Cyperaceae
yellow nutsedge Cyperus esculentus L. var. leptostachyus Boeckl. CYESL Cyperaceae
yellow nutsedge Cyperus esculentus L. var. macrostachyus Boeckl. CYESM Cyperaceae
yellow nutsedge Cyperus esculentus L. var. sativus Boeckl. CYESS Cyperaceae
yellow pincushion Chaenactis glabriuscula DC. CHGL Asteraceae
yellow pincushion Chaenactis glabriuscula DC. var. glabriuscula CHGLG2 Asteraceae
yellow pincushion Chaenactis glabriuscula DC. var. heterocarpha (Torr. & Gray ex Gray) Hall CHGLH Asteraceae
yellow pincushion Chaenactis glabriuscula DC. var. lanosa (DC.) Hall CHGLL2 Asteraceae
yellow pincushion Chaenactis glabriuscula DC. var. megacephala Gray CHGLM Asteraceae
yellow rabbitbrush Chrysothamnus viscidiflorus (Hook.) Nutt. CHVI8 Asteraceae
yellow rabbitbrush Chrysothamnus viscidiflorus (Hook.) Nutt. ssp. axillaris (Keck) L.C. Anders. CHVIA4 Asteraceae
yellow rabbitbrush Chrysothamnus viscidiflorus (Hook.) Nutt. ssp. lanceolatus (Nutt.) Hall & Clements CHVIL4 Asteraceae
yellow rabbitbrush Chrysothamnus viscidiflorus (Hook.) Nutt. ssp. planifolius L.C. Anders. CHVIP3 Asteraceae
yellow rabbitbrush Chrysothamnus viscidiflorus (Hook.) Nutt. ssp. puberulus (D.C. Eat.) Hall & Clements CHVIP4 Asteraceae
yellow rabbitbrush Chrysothamnus viscidiflorus (Hook.) Nutt. ssp. viscidiflorus CHVIV2 Asteraceae
yellow rabbitbrush Chrysothamnus viscidiflorus (Hook.) Nutt. ssp. viscidiflorus var. latifolius (D.C. Eat.) Greene CHVIL10 Asteraceae
yellow rabbitbrush Chrysothamnus viscidiflorus (Hook.) Nutt. ssp. viscidiflorus var. stenophyllus (Gray) Hall CHVIS5 Asteraceae
yellow rabbitbrush Chrysothamnus viscidiflorus (Hook.) Nutt. ssp. viscidiflorus var. viscidiflorus CHVIV4 Asteraceae
yellow sarson Brassica rapa L. var. trilocularis (Roxb.) Kitam. BRRAT Brassicaceae
yellow screwstem Bartonia virginica (L.) B.S.P. BAVI3 Gentianaceae
yellow sedge Carex flava L. CAFL4 Cyperaceae
yellow spiderflower Cleome lutea Hook. CLLU2 Capparaceae
yellow spiderflower Cleome lutea Hook. var. lutea CLLUL Capparaceae
yellow star-thistle Centaurea solstitialis L. CESO3 Asteraceae
yellow star-tulip Calochortus monophyllus (Lindl.) Lem. CAMO3 Liliaceae
yellow sundrops Calylophus serrulatus (Nutt.) Raven CASE12 Onagraceae
yellow tackstem Calycoseris parryi Gray CAPA7 Asteraceae
yellow thimbleweed Anemone richardsonii Hook. ANRI Ranunculaceae
yellow thistle Cirsium horridulum Michx. CIHO2 Asteraceae
yellow thistle Cirsium horridulum Michx. var. horridulum CIHOH Asteraceae
yellow thistle Cirsium horridulum Michx. var. vittatum (Small) R.W. Long CIHOV Asteraceae
yellow Wallowa Indian paintbrush Castilleja chrysantha Greenm. CACH16 Scrophulariaceae
yellow wild indigo Baptisia sphaerocarpa Nutt. BASP Fabaceae
yellowflower clermontia Clermontia ?fulva Levl. CLFU Campanulaceae
yellowflower Indian mallow Abutilon reventum S. Wats. ABRE Malvaceae
yellowflower onion Allium coryi M.E. Jones ALCO Liliaceae
yellowfruit sedge Carex annectens (Bickn.) Bickn. CAAN6 Cyperaceae
yellowhair Indian paintbrush Castilleja xanthotricha Pennell CAXA Scrophulariaceae
yellowleaf hawthorn Crataegus flava Ait. CRFL2 Rosaceae
yellowrocket Barbarea Ait. f. BARBA Brassicaceae
yellowshow Amoreuxia Moc. & Sessé ex DC. AMORE Bixaceae
yellowspine thistle Cirsium ochrocentrum Gray CIOC2 Asteraceae
yellowspine thistle Cirsium ochrocentrum Gray ssp. ochrocentrum CIOCO2 Asteraceae
Yellowstone milkvetch Astragalus miser Dougl. var. praeteritus Barneby ASMIP2 Fabaceae
yellowtuft Alyssum murale Waldst. & Kit. ALMU Brassicaceae
yellowwhite cryptantha Cryptantha ochroleuca Higgins CROC2 Boraginaceae
yellowwood Afrocarpus (J. Buchholz & N. E. Gray) C. N. Page AFROC Podocarpaceae
yellowwood Afrocarpus falcatus (Thunb.) C.N. Page AFFA Podocarpaceae
yellowwood Cladrastis Raf. CLADR Fabaceae
yerba Croton ovalifolius Vahl CROV Euphorbiaceae
yerba buena Clinopodium douglasii (Benth.) Kuntze CLDO2 Lamiaceae
yerba de culebra Bacopa stricta (Schrad.) B.L. Robins. BAST4 Scrophulariaceae
yerba de guava Coccocypselum herbaceum Aubl. COHE6 Rubiaceae
yerba de hierro Alectra fluminensis (Vell.) Stearn ALFL2 Scrophulariaceae
yerba de pasmo Baccharis pteronioides DC. BAPT Asteraceae
yerba mansa Anemopsis californica (Nutt.) Hook. & Arn. ANCA10 Saururaceae
yerba mansa Anemopsis Hook. & Arn. ANEMO3 Saururaceae
Yosemite onion Allium yosemitense Eastw. ALYO Liliaceae
Yosemite rockcress Arabis repanda S. Wats. ARRE2 Brassicaceae
Yosemite rockcress Arabis repanda S. Wats. var. repanda ARRER Brassicaceae
Yosemite sedge Carex sartwelliana Olney CASA7 Cyperaceae
Yucatan flymallow Cienfuegosia yucatanensis Millsp. CIYU Malvaceae
yucca milkvetch Astragalus lentiginosus Dougl. ex Hook. var. yuccanus M.E. Jones ASLEY Fabaceae
Yukon bellflower Campanula aurita Greene CAAU Campanulaceae
Yukon Indian paintbrush Castilleja yukonis Pennell CAYU Scrophulariaceae
Yukon sedge Carex bonanzensis Britt. CABO3 Cyperaceae
Yukon wormwood Artemisia macrobotrys Ledeb. ARMA20 Asteraceae
Yuma browneyes Camissonia claviformis (Torr. & Frém.) Raven ssp. yumae (Raven) Raven CACLY Onagraceae
Yuma sandmat Chamaesyce setiloba (Engelm. ex Torr.) J.B.S. Norton CHSE8 Euphorbiaceae
Yuma silverbush Argythamnia serrata (Torr.) Muell.-Arg. ARSE7 Euphorbiaceae
Yunnan bauhinia Bauhinia yunnanensis Franch. BAYU Fabaceae
zacale Bouteloua diversispicula J.T. Columbus BODI7 Poaceae
Zaca's manzanita Arctostaphylos glandulosa Eastw. ssp. zacaensis (Eastw.) P.V. Wells ARGLZ2 Ericaceae
Zahlbruckner's earth lichen Catapyrenium zahlbruckneri (Hasse) J. W. Thomson CAZA2 Verrucariaceae
zebraplant Calathea zebrina (Sims) Lindl. CAZE Marantaceae
zedoary Curcuma zedoaria (Christm.) Roscoe CUZE Zingiberaceae
zigzag jointvetch Aeschynomene rudis Benth. AERU Fabaceae
Zion Indian paintbrush Castilleja scabrida Eastw. var. scabrida CASCS4 Scrophulariaceae
Zion milkvetch Astragalus zionis M.E. Jones ASZI Fabaceae
Zion milkvetch Astragalus zionis M.E. Jones var. vigulus Welsh ASZIV Fabaceae
Zion milkvetch Astragalus zionis M.E. Jones var. zionis ASZIZ Fabaceae
zizotes milkweed Asclepias oenotheroides Cham. & Schlecht. ASOE Asclepiadaceae
Zschack's goosefoot Chenopodium berlandieri Moq. var. zschackii (J. Murr) J. Murr ex Aschers. CHBEZ Chenopodiaceae
Zuni milkvetch Astragalus accumbens Sheldon ASAC2 Fabaceae

Source:  U. S. Department of Agriculture

Back to Main Resource Page

Back to NurseryTree.com Home Page

 

OTHER   RESOURCES

Lists of Nurseries Around the Country

Easy Watering Solutions

Washington State Business, Government, etc. Listings

National Businesses

 

 

 

 

User Agreement    Add Your Business    About Us     Site Map

(c) 2007 NurseryTrees.com, LLC