Tradescantia pallida
Purple Heart
Tradescantia spathacea
Oyster Plant
Tragopogon porrifolius
Salsify
Trametes versicolor
Turkey Tails
Tridax procumbens
Coatbuttons
Trifolium aureum
Large Trefoil
Trifolium hybridum
Alsike Clover
Trifolium medium
Zigzag Clover
Trifolium ochroleucon
Sulphur Clover
Trimezia martinicensis
Yellow Walking Iris
Tripleurospermum inodorum
Scentless Mayweed
Triumfetta rhomboidea
Diamond Burbark
Trollius europaeus
Globeflower
Tropaeolum minus
Dwarf Nasturtium
Turritis glabra
Tower Mustard
Tussilago farfara
Colt's-foot
Ulex gallii
Western Gorse
Ulmus minor
Small-leaved Elm
Umbilicus rupestris
Navelwort
Urena lobata
Caesarweed
Urera caracasana
Flameberry
Urophora cardui
Canada thistle gall fly
Urtica urens
Small Nettle
Utricularia vulgaris
Greater Bladderwort