Monotypic Epidendroideae genera

Trizeuxis is a monotypic genus of flowering plants from the orchid family, Orchidaceae. The sole species is Trizeuxis falcata, native to the American Tropics (Trinidad, Venezuela, Colombia, the Guianas, Costa Rica, Panama, Brazil, Ecuador, Peru and Bolivia).

Santotomasia is a monotypic genus of flowering plants belonging to the family Orchidaceae. The only species is Santotomasia wardiana.

Lueckelia is a monotypic genus of flowering plants belonging to the family Orchidaceae. The only species is Lueckelia breviloba It is within the Tribe Cymbidieae and Subtribus of Stanhopeinae .

Imerinaea is a monotypic genus of flowering plants from the orchid family, Orchidaceae. The single species is Imerinaea madagascarica and is endemic to northern Madagascar. It is lithophilic and grows in shady areas under trees among mosses and lichens.

Rhinerrhiza divitiflora, commonly known as the raspy root orchid, is the only species in the genus Rhinerrhiza from the orchid family, Orchidaceae. It is an epiphytic or lithophytic orchid with usually only a single stem, many flat, raspy roots, between two and six leathery leaves and up to sixty pale orange flowers with red spots and blotches. The sepals and petals are narrow, thin and pointed. It mainly grows on rainforest trees and is found between the Atherton Tableland in Queensland and the Hunter River in New South Wales.

Schistotylus purpuratus, commonly known as purple sprites, is the only species in the genus Schistotylus from the orchid family, Orchidaceae. It is a small epiphytic orchid with up to six crowded, linear leaves and up to ten cup-shaped, pale green flowers with purple marking and a mostly white labellum. It grows in rainforest and swampy heath in eastern Australia.

Deceptor is a genus of flowering plants belonging to the family Orchidaceae. The only species is Deceptor bidoupensis.

Aetheorhyncha is a genus of epiphytic orchids. It contains only one known species, Aetheorhyncha andreettae, endemic to Ecuador.

Erasanthe is a genus of epiphytic orchids. It contains only one known species, Erasanthe henrici, endemic to Madagascar. Two subspecies are recognized:

Taprobanea is a genus of flowering plants from the orchid family, Orchidaceae. There is only one known species, Taprobanea spathulata, native to India and to Sri Lanka.

Schunkea is a monotypic genus of flowering plants belonging to the family Orchidaceae. The only known species is Schunkea vierlingii.

Lemurorchis is a genus of flowering plants from the orchid family, Orchidaceae. It contains only one known species, Lemurorchis madagascariensis, an epiphyte endemic to Madagascar.

Dilochiopsis is a genus of orchids. It was previously considered as a synonym of the genus Eria, but eventually it has become an accepted name. At present (June 2014), there is only one known species, Dilochiopsis scortechinii, endemic to peninsular Malaysia.

Rhaesteria is a monotypic genus of flowering plants from the orchid family, Orchidaceae. The sole species is Rhaesteria eggelingii, native to Rwanda and Uganda.

Polyotidium is a monotypic genus of flowering plants from the orchid family, Orchidaceae. The sole species is Polyotidium huebneri, native to Colombia, Venezuela and Brazil.

Vasqueziella is a genus of orchids. Only one species is known, Vasqueziella boliviana, native to Peru and Bolivia.

Microepidendrum is a monotypic genus of flowering plants in the family Orchidaceae, with a single species Microepidendrum subulatifolium, native to southwest Mexico. The genus was established in 2002. Microepidendrum subulatifolium was first described in 1845 as Epidendrum subulatifolium.