Calflora   Genus Index   U
Older names are written in gray. Use Name Status for synonym relationships.
Ulex Ulex europaeus
Ulmus Ulmus alata
Ulmus americana
Ulmus glabra
Ulmus minor
Ulmus parvifolia
Ulmus pumila
Ulmus thomasii
Ulota Ulota megalospora
Ulota obtusiuscula
Ulota phyllantha
Ulva Ulva clathratioides
Ulva pertusa
Umbellularia Umbellularia californica
Undaria Undaria pinnatifida
Urochloa Urochloa arizonica
Urochloa maxima
Urochloa mosambicensis
Urochloa ramosa
Urochloa texana
Uropappus Uropappus lindleyi
Urospermum Urospermum picroides
Urtica Urtica dioica
Urtica dioica ssp. dioica
Urtica dioica ssp. gracilis
Urtica dioica ssp. holosericea
Urtica urens
Usnea Usnea longissima
Utricularia Utricularia gibba
Utricularia inflata
Utricularia intermedia
Utricularia macrorhiza
Utricularia minor
Utricularia ochroleuca
Utricularia subulata