SZLACHETKO (1995)
Family Apostasiaceae
Family Cypripediaceae
Family Orchidaceae
Subfamily Thelymitroideae
Tribe Diurideae
Tribe Cryptostylideae
Tribe Microtideae
Tribe Rhizanthelleae
Tribe Thelymitreae
Tribe Geoblasteae
Tribe Pterostylideae
Subfamily Orchidoideae
Tribe Corycieae
Tribe Disaeae
Tribe Huttonaeeae
Tribe Orchideae
Tribe Satyrieae
Subfamily Tropidioideae
Subfamily Spiranthoideae
Tribe Goodyereae
Tribe Spirantheae
Tribe Cranichideae
Subfamily Neottioideae
Tribe Diceratosteleae
Tribe Neottieae
Subfamily Vanilloideae
Tribe Arethuseae
Tribe Triphoreae
Tribe Vanilleae
Tribe Nervilieae
Tribe Gastrodieae
Tribe Epipogieae
Subfamily Epidendroideae
Tribe Bletieae
Tribe Podochileae
Tribe Adrorhizeae
Tribe Malaxideae
Tribe Calypsoeae
Tribe Coelogyneae
Tribe Dendrobieae
Tribe Elleantheae
Tribe Epidendreae
Subfamily Vandoideae
Tribe Polystachyeae
Tribe Cymbideae
Tribe Cataseteae
Tribe Thecosteleae
Tribe Vandeae
Tribe Maxillarieae
Tribe Cryptarrheneae
Tribe Zygopetaleae
Tribe Dichaeeae
Tribe Telipogoneae
Tribe Ornithocephaleae
Tribe Oncidieae
Unlisted genera