Trichopilia suavis 
Trichosalpinx chamaelepanthes 
Trichosalpinx orbicularis 
Trichosalpinx spathulata 
Trichosalpinx uvaria 
Trigonidium egertonianum 
Trim Sun Orchid 
Trimezia juncifolia 
Trimezia sabini 
Trizeuxis 
Tropidia saprophytica 
Tuberose 
Tuberous Grass Pink 
Tufted Grass-Tree 
Tufted Lily 
Twining Fringe-lily 
Twisted Restrepia 
Two Callous Pleurothallis 
Two Horned Rudolfiella 
Two-flowered Iris 
Undivided Dendrobium 
Unscented dendrobium 
Upright spider orchid 
Vagaria parviflora