Umbellularia californica
Urera caracasana (leaves)
Uropappus lindleyi
Urospermum dalechampii
Ursina cakilefolia
Urtica dioica ssp. holosericea
Utricularia intermedia
Utricularia macrorhiza
Vaccinium cespitosum
Vaccinium consanguinium
Vaccinium ovatum
Vaccinium stamineum
Vaccinium uliginosum var. occidentale
Valeriana asarifolia
Valeriana californica
Valeriana tuberosa
Venegasia carpesioides
Veratrum californicum var. californicum
Verbascum blattaria
Verbascum sinuatum
Verbascum thapsus
Verbascum undulatum
Verbascum virgatum
Verbascum sp.
Verbena lasiostachys
Verbena lasiostachys var. lasiostachys
Verbena lilacina
Verbesina crocata
Vernonia nudifolia
Veronica allionii
Veronica americana
Veronica serpyllifolia ssp. humifusa
Veronica wormskjoldii
Veronica sp.
Vestia lycioides
Viburnum carlesii
Viburnum ellipticum
Viburnum huphense ssp. huphense
Viburnum opulus
Viburnum tinus
Vicia americana
Vicia americana ssp. americana
Vicia cracca
Vicia sativa ssp. sativa
Vicia villosa ssp. varia
Vicia sp.
Victoria sp.
Vincetoxicum hirundinaria
Viola adunca
Viola arvensis
Viola calcarata
Viola cuneata
Viola douglasii
Viola glabella
Viola lobata
Viola lobata ssp. integrifolia
Viola lobata ssp. lobata
Viola macloskeyi
Viola pinetorum ssp. pinetorum
Viola purpurea ssp. purpurea
Viola purpurea ssp. quercetorum
Vitis californica
Vitis girdiana
Watsonia borbonica ssp. ardernei
Watsonia marginata
Watsonia pyramidata
Whipplea modesta
Wigandia urens
Wilsonara sp.
Woodwardia fimbriata
Woodwardia semicordata
Woodwardia unigemmata
Woodwardia sp.
Wyethia angustifolia
Wyethia elata
Wyethia helenioides
Wyethia mollis
Wygandia urens
Xanthorrhoea glauca
Xeronema callistemon
Xerophyllum tenax
Yabea microcarpa
Yucca brevifolia
Yucca rupicola
Zantedeschia albomaculata
Zeltnera venusta
Zenobia pulverulenta
Zinnia elegans