| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| VUPI | Vulpicida pinastri (Scop.) J.-E. Mattsson & M. J. Lai | | Parmeliaceae
|
| VUTI | Vulpicida tilesii (Ach.) J.-E. Mattsson & M. J. Lai | | Parmeliaceae
|
| VUVI | Vulpicida viridis (Schwein.) J.-E. Mattsson & M. J. Lai | | Parmeliaceae
|
| VULPI2 | Vulpicida J.-E. Mattsson & M. J. Lai | vulpicida | Parmeliaceae
|
| WACHE | Wachendorfia Burm. | wachendorfia | Haemodoraceae
|
| WAAT | Wahlbergella attenuata (Farr) Rydb. | Silene uralensis ssp. attenuata | Caryophyllaceae
|
| WADR | Wahlbergella drummondii (Hook.) Rydb. | Silene drummondii var. drummondii | Caryophyllaceae
|
| WAKI | Wahlbergella kingii (S. Wats.) Rydb. | Silene kingii | Caryophyllaceae
|
| WAMO | Wahlbergella montana (S. Wats.) Rydb. | Silene uralensis ssp. montana | Caryophyllaceae
|
| WAPA3 | Wahlbergella parryi (S. Wats.) Rydb. | Silene parryi | Caryophyllaceae
|
| WAST | Wahlbergella striata (Rydb.) Rydb. | Silene drummondii var. striata | Caryophyllaceae
|
| WATA | Wahlbergella tayloriae (B.L. Robins.) Rydb. | Silene tayloriae | Caryophyllaceae
|
| WAGR | Wahlenbergia gracilis (G. Forst.) A. DC. | Wahlenbergia marginata | Campanulaceae
|
| WALI | Wahlenbergia linarioides (Lam.) A. DC. | tuffybells | Campanulaceae
|
| WAMA | Wahlenbergia marginata (Thunb.) A. DC. | southern rockbell | Campanulaceae
|
| WAHLE | Wahlenbergia Schrad. ex Roth | wahlenbergia | Campanulaceae
|
| WADO | Waldsteinia doniana Tratt. | Waldsteinia fragarioides ssp. doniana | Rosaceae
|
| WAFRD | Waldsteinia fragarioides (Michx.) Tratt. ssp. doniana (Tratt.) Teppner | Appalachian barren strawberry | Rosaceae
|
| WAFRF | Waldsteinia fragarioides (Michx.) Tratt. ssp. fragarioides | Appalachian barren strawberry | Rosaceae
|
| WAFRP | Waldsteinia fragarioides (Michx.) Tratt. var. parviflora (Small) Fern. | Waldsteinia fragarioides ssp. doniana | Rosaceae
|
| WAFR | Waldsteinia fragarioides (Michx.) Tratt. | Appalachian barren strawberry | Rosaceae
|
| WAID | Waldsteinia idahoensis Piper | Idaho barren strawberry | Rosaceae
|
| WALO | Waldsteinia lobata (Baldw.) Torr. & Gray | piedmont barren strawberry | Rosaceae
|
| WAPA2 | Waldsteinia parviflora Small | Waldsteinia fragarioides ssp. doniana | Rosaceae
|
| WAPE2 | Waldsteinia pendula (Urban) Mez | nodding barren strawberry | Rosaceae
|
| WALDS | Waldsteinia Willd. | barren strawberry | Rosaceae
|
| WALA | Wallenia lamarckiana (A. DC.) Mez | jacanillo | Myrsinaceae
|
| WAPE | Wallenia pendula (Urban) Mez | Wallenia lamarckiana | Myrsinaceae
|
| WAYU | Wallenia yunquensis (Urban) Mez | el yunque jacanillo | Myrsinaceae
|
| WALLE | Wallenia Sw. | jacanillo | Myrsinaceae
|
| WACI | Wallia cinerea (L.) Alef. | Juglans cinerea | Juglandaceae
|
| WANI | Wallia nigra (L.) Alef. | Juglans nigra | Juglandaceae
|
| WAAM2 | Waltheria americana L. | Waltheria indica | Sterculiaceae
|
| WACA2 | Waltheria calcicola Urban | raichie | Sterculiaceae
|
| WAINA | Waltheria indica L. var. americana (L.) R. Br. ex Hosaka | Waltheria indica | Sterculiaceae
|
| WAIN | Waltheria indica L. | uhaloa | Sterculiaceae
|
| WAPY | Waltheria pyrolifolia Gray | Waltheria indica | Sterculiaceae
|
| WALTH | Waltheria L. | waltheria | Sterculiaceae
|
| WAAM | Warea amplexifolia (Nutt.) Nutt. | wideleaf pinelandcress | Brassicaceae
|
| WAAU | Warea auriculata Shinners | Warea amplexifolia | Brassicaceae
|
| WACA | Warea carteri Small | Carter's pinelandcress | Brassicaceae
|
| WACU | Warea cuneifolia (Muhl. ex Nutt.) Nutt. | Carolina pinelandcress | Brassicaceae
|
| WASE | Warea sessilifolia Nash | sessileleaf pinelandcress | Brassicaceae
|
| WAREA | Warea Nutt. | pinelandcress | Brassicaceae
|
| WASC | Warnockia scutellarioides (Engelm. & Gray) M.W. Turner | prairie brazosmint | Lamiaceae
|
| WARNO | Warnockia M.W. Turner | brazosmint | Lamiaceae
|
| WACR | Warnstorfia crassicostata (Jansssens) Crum & Anderson | Drepanocladus crassicostatus | Amblystegiaceae
|
| WAEXE70 | Warnstorfia exannulata (Schimp. in B.S.G.) Loeske var. exannulata | warnstorfia moss | Amblystegiaceae
|
| WAEXP2 | Warnstorfia exannulata (Schimp. in B.S.G.) Loeske var. purpurascens (Schimp. in B.S.G.) Tuom. & T. Kop. | Warnstorfia exannulata var. exannulata | Amblystegiaceae
|
| WAEXP | Warnstorfia exannulata (Schimp. in B.S.G.) Loeske var. purpurascens (Schimp.) Tuom. & T. Kop. | warnstorfia moss | Amblystegiaceae
|
| WAEX | Warnstorfia exannulata (Schimp. in B.S.G.) Loeske | warnstorfia moss | Amblystegiaceae
|
| WAFLF2 | Warnstorfia fluitans (Hedw.) Loeske var. falcata (Sanio ex C. Jens.) Crum & Anderson | warnstorfia moss | Amblystegiaceae
|
| WAFLF | Warnstorfia fluitans (Hedw.) Loeske var. fluitans | warnstorfia moss | Amblystegiaceae
|
| WAFL2 | Warnstorfia fluitans (Hedw.) Loeske | warnstorfia moss | Amblystegiaceae
|
| WAPR | Warnstorfia procera (Ren. & Arnell in Husn.) Tuom. & T. Kop. | warnstorfia moss | Amblystegiaceae
|
| WAPS | Warnstorfia pseudosarmentosa (Card. & Th�r.) Tuom. & T. Kop. | warnstorfia moss | Amblystegiaceae
|
| WAPS2 | Warnstorfia pseudostraminea (C. M�ll.) Tuom. & T. Kop. | warnstorfia moss | Amblystegiaceae
|
| WATR | Warnstorfia trichophylla (Warnst.) Tuom. & T. Kop. | warnstorfia moss | Amblystegiaceae
|
| WATU | Warnstorfia tundrae (Arnell) Loeske | tundra warnstorfia moss | Amblystegiaceae
|
| WARNS | Warnstorfia Loeske | warnstorfia moss | Amblystegiaceae
|
| WAFL | Warscewiczella flabelliformis (Sw.) Cogn. | Cochleanthes flabelliformis | Orchidaceae
|
| WAJA | Wasabia japonica (Miq.) Matsum. | wasabi | Brassicaceae
|
| WASAB | Wasabia Matsum. | wasabia | Brassicaceae
|
| WACL | Washingtonia claytonii (Michx.) Britt. | Osmorhiza claytonii | Apiaceae
|
| WADI | Washingtonia divaricata Britt. | Osmorhiza berteroi | Apiaceae
|
| WAFI2 | Washingtonia filamentosa (Fenzi) Kuntze | Washingtonia filifera | Arecaceae
|
| WAFIR | Washingtonia filifera (L. Linden) H. Wendl. var. robusta Parish | Washingtonia filifera | Arecaceae
|
| WAFI | Washingtonia filifera (L. Linden) H. Wendl. | California fan palm | Arecaceae
|
| WAGR2 | Washingtonia gracilis Parish | Washingtonia robusta | Arecaceae
|
| WALO2 | Washingtonia longistylis (Torr.) Britt. | Osmorhiza longistylis | Apiaceae
|
| WAOB | Washingtonia obtusa Coult. & Rose | Osmorhiza depauperata | Apiaceae
|
| WAPU | Washingtonia purpurea Coult. & Rose | Osmorhiza purpurea | Apiaceae
|
| WARO | Washingtonia robusta H. Wendl. | Washington fan palm | Arecaceae
|
| WASO | Washingtonia sonorae S. Wats. | Washingtonia robusta | Arecaceae
|
| WASHI | Washingtonia H. Wendl. | fan palm | Arecaceae
|
| WAAN2 | Watsonia angusta auct. non Ker-Gawl. | Watsonia meriana | Iridaceae
|
| WABO | Watsonia borbonica (Pourret) Goldblatt | cape bugle-lily | Iridaceae
|
| WABU | Watsonia bulbillifera Matthews & L. Bolus | Watsonia meriana | Iridaceae
|
| WAMA2 | Watsonia marginata (L. f.) Ker-Gawl. | fragrant bugle-lily | Iridaceae
|
| WAME | Watsonia meriana (L.) P. Mill. | bulbil bugle-lily | Iridaceae
|
| WATSO | Watsonia P. Mill. | bugle-lily | Iridaceae
|
| WACA3 | Waynea californica Moberg | | Bacidiaceae
|
| WAYNE | Waynea Moberg | waynea | Bacidiaceae
|
| WEMO | Weberaster modestus (Lindl.) A.& D. L�ve | Canadanthus modestus | Asteraceae
|
| WERA | Weberaster radulinus (Gray) A.& D. L�ve | Eurybia radulina | Asteraceae
|
| WECO | Websteria confervoides (Poir.) S. Hooper | algal bulrush | Cyperaceae
|
| WESU | Websteria submersa (Sauvalle) Britt. | Websteria confervoides | Cyperaceae
|
| WEBST | Websteria S.H. Wright | algal bulrush | Cyperaceae
|
| WEACH | Wedelia acapulcensis Kunth var. hispida auct. non (Kunth) Strother | Wedelia texana | Asteraceae
|
| WECAP | Wedelia calycina L.C. Rich. var. parviflora (L.C. Rich.) Alain | Wedelia parviflora | Asteraceae
|
| WECA | Wedelia calycina L.C. Rich. | Wedelia fruticosa | Asteraceae
|
| WECR | Wedelia cristata Standl. | Allionia incarnata var. incarnata | Nyctaginaceae
|
| WEFR | Wedelia fruticosa Jacq. | coastalplain creepingoxeye | Asteraceae
|
| WEGL | Wedelia glauca (Ortega) Hoffmann ex Hicken | Pascalia glauca | Asteraceae
|
| WEGR | Wedelia gracilis L.C. Rich. | Sphagneticola gracilis | Asteraceae
|
| WEHI | Wedelia hispida auct. non Kunth | Wedelia texana | Asteraceae
|
| WELA | Wedelia lanceolata DC. | riverbank creepingoxeye | Asteraceae
|
| WEPA | Wedelia parviflora L.C. Rich. | smallflower creepingoxeye | Asteraceae
|
| WERE | Wedelia reticulata DC. | manazanilla del monte | Asteraceae
|
| WETE | Wedelia texana (Gray) B.L. Turner | hairy wedelia | Asteraceae
|
| WETR | Wedelia trilobata (L.) A.S. Hitchc. | Sphagneticola trilobata | Asteraceae
|