T - Scientific Name -
- Tanakaea omeiensis Nakai
- Tanakaea radicans Franch. et Sav. var. Matsumurae Nakai
- Tetradenia acuminatissima Hayata
- Tetradenia acutotrinervia Hayata
- Tetradenia kotoensis Hayata
- Tetradenia parvigemma Hayata
- Tetradenia uniflora Kaneh. & Hatus.
- Tetradenia variabillima Hayata
- Tithymalus pseudosikkimensis Hurus. & Ya. Tanaka
- Tovara ryukyuensis Masam.
- Tovara smaragdina Nakai ex Maekawa
- Triadica japonica (Siebold & Zucc.) Baill. f. macrophylla Furumi ex Hurus.
- Trigonostemon heterophyllus Merr.
- Triosteum Maruyamae Ohwi