Hamer & Siegerist, Saccoglossum Schl., Sunipia Lindl., Synarmosepalum Garay, Hamer & Siegerist, Tapeinoglossum Schl., Trias Lindl., Vesicisepalum Garay, Hamer & Siegerist Subtribe Dendrobiinae Genera: Cadetia, Dendrobium, Diplocaulobium, Epigeneium, Flickingeria, PseuderiaSubtribe Eriinae Alliance Eria Genera: Eria, TrichotosiaAlliance Ceratostylis Genera: Appendicula, Ceratostylis, Epiblastus, SarcostomaSubtribe Podochilinae Genera: Chilopogon, PodochilusSubtribe Thelasiinae Genera: Phreatia, RhynchophreatiaTribe Triphoreae A primitive tribe consisting of three genera and twenty species recently assigned to Epidendroideae. Genera: Monophyllorchis, Psilochilus, TriphoraTribe Tropidieae Formerly placed in the subfamily Spiranthoideae Genera: Corymborkis, Tropidia Tribe Xerorchideae Genus: XerorchisSubfamily Higher Epidendroideae Formerly called Vandoideae, this is the second largest subfamily with over 300 genera in more than 5,000 species. They are mostly epiphytes, but include some terrestrials and myco-heterotrophs, all occurring in most tropical areas. The main stem grows in a single direction. Many of the species develop pseudobulbs (i.e. a bulge at the base of a stem), that are normally shorter and sturdier than those in the epidendroids. The striking characteristics of the vandoids are a cellular pollinium stalk (= stipe), superposed pollinia and the unique development of the incumbent anther, that bends early in development. Tribe Cymbidieae About 1,800 species in 100 to 130 genera. Species are either terrestrial or epiphytic, and range throughout global tropical regions. All species have, as a unique feature, a sympodial growth habit and two pollinia. Subtribe Acriopsidinae: less than 50 species. Genus: AcriopsisSubtribe Catasetinae: about 150 species; epiphytes occurring in the Western Hemisphere. Genera: Catasetum, Cycnoches, MormodesSubtribe Cyrtopodiinae: over 400 species, usually terrestrial; Asia, Africa, and tropical America. Alliance Bromheadia Genus: BromheadiaAlliance Eulophia Genus: EulophiaAlliance Cyrtopodium Genera: Cymbidiella, Cyrtopodium, GaleandraAlliance Cymbidium Genera: Ansellia, Cymbidium, GrammatophyllumAlliance Dipodium Genus: DipodiumAlliance hybrids Genera: × Bifrenidium, × Cymphiella, × Cyrtellia, × Eulocymbidiella, × Galeansellia, × Graphiella Subtribe Oncidiinae: Largest subtribe with nearly 1,000 species within about 56 to 78 genera, found in tropical America, the Caribbean and Florida. Most are epiphytes, but a few are terrestrials. They usually have short and stout pseudobulbs. Alliance Oncidium: largest alliance; includes the majority of genera in cultivation. Genera: Ada, Aspasia, Brassia, Cochlioda, Miltonia, Miltoniopsis, Odontoglossum, Oncidium (most) Alliance Trichocentrum Genus: TrichocentrumAlliance Comparettia Genera: Oncidium (equitants only), Comparettia, RodrigueziaAlliance Trichophilia Genera: Notylia, Psychopsis, TrichopiliaAlliance Lockhartia Genus: LockhartiaAlliance hybrids: over 107 hybrid genera. Genera: × Aliceara, × Bakerara, × Beallara, × Brassidium, × Burrageara, × Colmanara, × Degarmoara, × Howeara, × Maclellanara, × Miltassia, × Miltonidium, × Odontobrassia, × Odontocidium, × Odontonia, × Rodricidium, × Trichocidium, ×