Tadeastrum
Taeniophyllum
Taeniorrhiza
Tainia
Tainiopsis
Takulumena
Talpinaria
Tamayorkis
Tangtsinia
Tankervillia
Tapeinoglossum
Taprobanea
Taurantha
Taurodium
Taurostalix
Teagueia
Telipogon
Tetrabaculum
Tetragamestus
Tetramicra
Tetrapeltis
Tetrodon
Teuscheria
Thaia
Theana
Thecopus
Thecostele
Thelasis
Thelychiton
Thelymitra
Thelyschista
Theodorea
Thicuania
Thiebautia
Thorvaldsenia
Thrixspermum
Thulinia
Thunia
Thuniopsis
Thylacis
Thynninorchis
Thysanoglossa
Ticoglossum
Tinea
Tipularia
Titania
Todaroa
Tolumnia
Tomotris
Tomzanonia
Townsonia
Trachelosiphon
Trachoma
Trachypetalum
Trachyrhizum
Traunsteinera
Trevoria
Triaristella
Triaristellina
Trias
Tribrachia
Tribulago
Triceratorhynchus
Triceratostris
Trichocentrum
Trichoceros
Trichochilus
Trichoglottis
Trichopilia
Trichorhiza
Trichosalpinx
Trichosma
Trichotosia
Tridactyle
Tridelta
Trigonidium
Trigonochilum
Triorchis
Triorchos
Triotosiphon
Triphora
Tripleura
Tripudianthes
Trisetella
Tritelandra
Trizeuxis
Trophianthus
Tropidia
Tropilis
Trudelia
Tryphia
Tsaiorchis
Tubella
Tuberolabium
Tubilabium
Tulexis
Tulotis
Tupacamaria
Tussaca
Tylochilus
Tylostigma
Tylostylis
