| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| VIAN5 | Viguiera annua (M.E. Jones) Blake | Heliomeris longifolia var. annua | Asteraceae
|
| VICI3 | Viguiera ciliata (Robins. & Greenm.) Blake | Heliomeris ciliata | Asteraceae
|
| VICO | Viguiera cordifolia Gray | heartleaf goldeneye | Asteraceae
|
| VIDEP | Viguiera deltoidea Gray var. parishii (Greene) Vasey & Rose | Viguiera parishii | Asteraceae
|
| VIDED3 | Viguiera dentata (Cav.) Spreng. var. dentata | toothleaf goldeneye | Asteraceae
|
| VIDEL2 | Viguiera dentata (Cav.) Spreng. var. lancifolia Blake | toothleaf goldeneye | Asteraceae
|
| VIDE3 | Viguiera dentata (Cav.) Spreng. | toothleaf goldeneye | Asteraceae
|
| VILA3 | Viguiera laciniata Gray | torhleaf goldeneye | Asteraceae
|
| VILOA | Viguiera longifolia (Robins. & Greenm.) Blake var. annua (M.E. Jones) Welsh | Heliomeris longifolia var. annua | Asteraceae
|
| VILO7 | Viguiera longifolia (Robins. & Greenm.) Blake | Heliomeris longifolia var. longifolia | Asteraceae
|
| VILU5 | Viguiera ludens (Shinners) M.C. Johnston | Viguiera phenax | Asteraceae
|
| VIMUN | Viguiera multiflora (Nutt.) Blake var. nevadensis (A. Nels.) Blake | Heliomeris multiflora var. nevadensis | Asteraceae
|
| VIMU | Viguiera multiflora (Nutt.) Blake | Heliomeris multiflora var. multiflora | Asteraceae
|
| VIOV | Viguiera ovalis Blake | Heliomeris multiflora var. brevifolia | Asteraceae
|
| VIPA14 | Viguiera parishii Greene | Parish's goldeneye | Asteraceae
|
| VIPH | Viguiera phenax Blake | field goldeneye | Asteraceae
|
| VIPO3 | Viguiera porteri (Gray) Blake | Helianthus porteri | Asteraceae
|
| VIRE | Viguiera reticulata S. Wats. | netvein goldeneye | Asteraceae
|
| VISO2 | Viguiera soliceps Barneby | Heliomeris soliceps | Asteraceae
|
| VISTC | Viguiera stenoloba Blake var. chihuahuensis Butterwick, var. nov. ined. | Chihuahua resinbush | Asteraceae
|
| VISTS | Viguiera stenoloba Blake var. stenoloba | resinbush | Asteraceae
|
| VIST | Viguiera stenoloba Blake | resinbush | Asteraceae
|
| VITR9 | Viguiera triloba (Gray) J. Olsen | yellow streamers | Asteraceae
|
| VIGUI | Viguiera Kunth | goldeneye | Asteraceae
|
| VIDO5 | Vilfa domingensis Trin. | Sporobolus domingensis | Poaceae
|
| VISP3 | Vilfa spartinae Trin. | Spartina spartinae | Poaceae
|
| VITR12 | Vilfa tricholepis Torr. | Blepharoneuron tricholepis | Poaceae
|
| VISQ | Villadia squamulosa (S. Wats.) Rose | rat's-tail succulent | Crassulaceae
|
| VITE3 | Villadia texana (J.G. Sm.) Rose | Lenophyllum texanum | Crassulaceae
|
| VILLA | Villadia Rose | villadia | Crassulaceae
|
| VILA14 | Villarsia lacunosa Vent. | Nymphoides cordata | Menyanthaceae
|
| VIHE3 | Vinca herbacea Waldst. & Kit. | herbaceous periwinkle | Apocynaceae
|
| VIMAV | Vinca major L. var. variegata Loud. | Vinca major | Apocynaceae
|
| VIMA | Vinca major L. | bigleaf periwinkle | Apocynaceae
|
| VIMI2 | Vinca minor L. | common periwinkle | Apocynaceae
|
| VIRO6 | Vinca rosea L. | Catharanthus roseus | Apocynaceae
|
| VINCA | Vinca L. | periwinkle | Apocynaceae
|
| VIBA3 | Vincetoxicum baldwynianum (Sweet) Britt. | Matelea baldwyniana | Asclepiadaceae
|
| VICA9 | Vincetoxicum carolinense (Jacq.) Britt. | Matelea carolinensis | Asclepiadaceae
|
| VIGO | Vincetoxicum gonocarpos Walt. | Matelea gonocarpos | Asclepiadaceae
|
| VIHI4 | Vincetoxicum hirsutum (Michx.) Britt. | Matelea carolinensis | Asclepiadaceae
|
| VIHI3 | Vincetoxicum hirundinaria Medik. | Cynanchum vincetoxicum | Asclepiadaceae
|
| VIME4 | Vincetoxicum medium auct. non (R. Br.) Dcne. | Cynanchum rossicum | Asclepiadaceae
|
| VINI3 | Vincetoxicum nigrum (L.) Moench | Cynanchum louiseae | Asclepiadaceae
|
| VIOB2 | Vincetoxicum obliquum (Jacq.) Britt. | Matelea obliqua | Asclepiadaceae
|
| VIOF | Vincetoxicum officinale Moench | Cynanchum vincetoxicum | Asclepiadaceae
|
| VIRO9 | Vincetoxicum rossicum (Kleopov) Barbarich | Cynanchum rossicum | Asclepiadaceae
|
| VISH3 | Vincetoxicum shortii (Gray) Britt. | Matelea obliqua | Asclepiadaceae
|
| VISI2 | Vincetoxicum sintenisii (Schlechter) Britt. | Matelea sintenisii | Asclepiadaceae
|
| VIST4 | Vincetoxicum stephanotrichum (Griseb.) Britt. | Gonolobus stephanotrichus | Asclepiadaceae
|
| VISU4 | Vincetoxicum suberosum auct. non (L.) Britt. | Matelea gonocarpos | Asclepiadaceae
|
| VIVA2 | Vincetoxicum variifolium (Schlechter) Britt. | Matelea variifolia | Asclepiadaceae
|
| VIAB | Viola aberrans Greene | Viola conjugens | Violaceae
|
| VIAB2 | Viola �abundans House | Viola sagittata var. ovata | Violaceae
|
| VIADA2 | Viola adunca Sm. ssp. ashtonae M.S. Baker | Viola adunca var. adunca | Violaceae
|
| VIADO | Viola adunca Sm. ssp. oxyceras (S. Wats.) Piper | Viola adunca var. oxyceras | Violaceae
|
| VIADR | Viola adunca Sm. ssp. radicosa M.S. Baker | Viola adunca var. adunca | Violaceae
|
| VIADT | Viola adunca Sm. ssp. typica M.S. Baker | Viola adunca var. adunca | Violaceae
|
| VIADU2 | Viola adunca Sm. ssp. uncinulata (Greene) Applegate | Viola adunca var. adunca | Violaceae
|
| VIADA | Viola adunca Sm. var. adunca | hookedspur violet | Violaceae
|
| VIADB | Viola adunca Sm. var. bellidifolia (Greene) Harrington | Viola adunca var. adunca | Violaceae
|
| VIADC | Viola adunca Sm. var. cascadensis (M.S. Baker) C.L. Hitchc. | Viola adunca var. adunca | Violaceae
|
| VIADK | Viola adunca Sm. var. kirkii Duran | Kirk's violet | Violaceae
|
| VIADM | Viola adunca Sm. var. minor (Hook.) Fern. | Viola labradorica | Violaceae
|
| VIADO2 | Viola adunca Sm. var. oxyceras (S. Wats.) S. Wats. ex Jepson | hookedspur violet | Violaceae
|
| VIADU | Viola adunca Sm. var. uncinulata (Greene) C.L. Hitchc. | Viola adunca var. adunca | Violaceae
|
| VIAD | Viola adunca Sm. | hookedspur violet | Violaceae
|
| VIAD4 | Viola aduncoides A.& D. L�ve | Viola adunca var. adunca | Violaceae
|
| VIAF2 | Viola affinis Le Conte | sand violet | Violaceae
|
| VIAN4 | Viola angellae Pollard | Viola bernardii | Violaceae
|
| VIAP | Viola appalachiensis Henry | Appalachian violet | Violaceae
|
| VIAR | Viola arvensis Murr. | European field pansy | Violaceae
|
| VIAUA | Viola aurea Kellogg ssp. arizonensis M.S. Baker & J.C. Clausen | Viola purpurea ssp. mohavensis | Violaceae
|
| VIAUM | Viola aurea Kellogg ssp. mohavensis M.S. Baker & J.C. Clausen ex Blake | Viola purpurea ssp. mohavensis | Violaceae
|
| VIAU3 | Viola aurea Kellogg | golden violet | Violaceae
|
| VIBAG | Viola bakeri Greene ssp. grandis M.S. Baker | Viola bakeri | Violaceae
|
| VIBAS | Viola bakeri Greene ssp. shastensis M.S. Baker | Viola bakeri | Violaceae
|
| VIBA2 | Viola bakeri Greene | Baker's violet | Violaceae
|
| VIBEB | Viola beckwithii Torr. & Gray ssp. beckwithii | Beckwith's violet | Violaceae
|
| VIBEG | Viola beckwithii Torr. & Gray ssp. glabrata M.S. Baker | western pansy | Violaceae
|
| VIBE2 | Viola beckwithii Torr. & Gray | Beckwith's violet | Violaceae
|
| VIBE4 | Viola bellidifolia Greene | Viola adunca var. adunca | Violaceae
|
| VIBE5 | Viola �bernardii Greene (pro sp.) | | Violaceae
|
| VIBI | Viola bicolor Pursh | field pansy | Violaceae
|
| VIBI2 | Viola biflora L. | arctic yellow violet | Violaceae
|
| VIBI3 | Viola �bissellii House | | Violaceae
|
| VIBI7 | Viola biternata Greene | Viola sheltonii | Violaceae
|
| VIBLB | Viola blanda Willd. var. blanda | sweet white violet | Violaceae
|
| VIBLP | Viola blanda Willd. var. palustriformis Gray | sweet white violet | Violaceae
|
| VIBL | Viola blanda Willd. | sweet white violet | Violaceae
|
| VIBR3 | Viola �brauniae Grover ex Cooperrider | | Violaceae
|
| VIBRB | Viola brittoniana Pollard var. brittoniana | northern coastal violet | Violaceae
|
| VIBRP | Viola brittoniana Pollard var. pectinata (Bickn.) Alexander | northern coastal violet | Violaceae
|
| VIBR | Viola brittoniana Pollard | northern coastal violet | Violaceae
|
| VICA6 | Viola �caesariensis House | Viola mistura | Violaceae
|
| VICA3 | Viola californica M.S. Baker | California violet | Violaceae
|
| VICAR2 | Viola canadensis L. ssp. rydbergii (Greene) House | Viola canadensis var. canadensis | Violaceae
|
| VICAC | Viola canadensis L. var. canadensis | Canadian white violet | Violaceae
|
| VICAC2 | Viola canadensis L. var. corymbosa Nutt. ex Torr. & Gray | Viola canadensis var. canadensis | Violaceae
|
| VICAR | Viola canadensis L. var. rugulosa (Greene) C.L. Hitchc. | creepingroot violet | Violaceae
|
| VICAS | Viola canadensis L. var. scariosa Porter ex Britt. | Canadian white violet | Violaceae
|