San Francisco Bay Area Plant Encyclopedia
- Trichodiadema mirabile
- Trithrinax acanthocoma
- Tunilla corrugata
- Tunilla erectoclada
- Tunilla soehrensii
- Turbinicarpus gielsdorfianus
- Tweedia caerula
- Tylecodon buchholzianus
- Tylecodon dinteri
- Tylecodon paniculatus
- Tylecodon schaeferianus
- Tylecodon striatus
- Tylecodon wallichii
- Typhonium venosum
- Uncarina grandidieri
- Uncarina peltata
- Uncarina roeoesliana
- Uncinia “Belinda’s Find”
- Uncinia uncinata
- Uncinia uncinata “Rubra”
- Urginea maritima
- Ursinia sericea
- Utricularia calycifida “Asenath Waite”
- Utricularia longifolia
- Utricularia sandersonii
- Utricularia subulata
- Vauquelinia californica
- Veltheimia bracteata
- Veltheimia capensis
- Verbena bonariensis