Tigridia pavonia (L.f.) Redouté 'Canariensis'
Tigridia pavonia (L.f.) Redouté 'Lilacea'
Tigridia pavonia (L.f.) Redouté 'Speciosa'
Tigridia vanhouttei Roezl ex G.Nicholson
Titanopsis calcarea (Marloth) Schwantes
Titanotrichum oldhamii (Hemsl.) Soler.
Tofieldia calyculata (L.) Wahlenb.
Tofieldia coccinea Richards.
Tofieldia furusei (Hiyama) M.N.Tamura & Fuse
Tolmiea menziesii (Pursh) Torr. & Gray
Tonestus lyallii Nelson
Townsendia excapa (Richardson) Porter
Townsendia formosa Greene
Townsendia hirsuta
Townsendia jonesii (Beamon) Reveal
Townsendia jonesii (Beamon) Reveal var. tumulosa Reveal
Townsendia mensana M.E. Jones.
Townsendia montana M.E. Jones.
Townsendia parryi Eaton.
Townsendia rothrockii A.Gray ex Rothrock.
Toxicoscordion fremontii (Torr.) Rydb.
Toxicoscordion nuttallii (A.Gray) Rydb.
Toxicoscordion venenosum (S.Watson) Rydb.
Tradescantia × andersoniana W.Ludw. & Rohweder 'Innocence'
Tradescantia × andersoniana W.Ludw. & Rohweder 'J. Crawf. Weguelin'
Tradescantia × andersoniana W.Ludw. & Rohweder 'Leonara'
Tradescantia × andersoniana W.Ludw. & Rohweder 'Zwanenburg Blue'
Tradescantia cerinthoides Kunth
Tradescantia longipes E.Anders & R.E.Woods
Tragopogon porrifolius L.

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