Monotypic Orchidoideae genera

Pseudorchis is a monotypic genus of flowering plants from the orchid family, Orchidaceae. The sole species is the small white orchid (Pseudorchis albida). It is found across much of Europe and northern Asia from Spain and Iceland to Kamchatka, including France, Great Britain, Germany, Poland, Scandinavia, Ukraine and much of Russia. It also occurs in Greenland and eastern Canada (Quebec, Newfoundland & Labrador). (Codes)

Steveniella is a genus of flowering plants from the orchid family, Orchidaceae. Only one species is known, Steveniella satyrioides, native to Iran, Turkey, Crimea and the Caucasus.

Ludisia (Lus.) is a genus of orchids that was thought to contain just one species, Ludisia discolor, commonly referred to as jewel orchid. A second species, Ludisia ravanii, from the Philippines, was described in 2013. Ludisia discolor is native to Southern China, Northeast India, Thailand, Vietnam, the Philippines, Malaysia, Indonesia and Myanmar, and often cultivated.

Discyphus is a genus of flowering plants from the orchid family, Orchidaceae. It is the only genus in the subtribe Discyphinae of the tribe Cranichideae. It contains only one currently recognized species, Discyphus scopulariae, with two accepted varieties:

Chamorchis is a genus of flowering plants from the orchid family, Orchidaceae. It contains only one known species, Chamorchis alpina, known as the alpine dwarf orchid, false orchid or false musk orchid, and found in subarctic and subalpine parts of Europe: Scandinavia, the Alps, the Carpathians, northern European Russia.

Burnettia cuneata, commonly known as lizard orchid, is the only species of the flowering plant genus Burnettia in the orchid family, Orchidaceae. It is a leafless terrestrial, mycotrophic herb with one or two leaf-like bracts and up to seven flowers that are brownish on the back and pink or white inside. It is endemic to southeastern Australia where it grows in dense thickets in swamps.

Aporostylis is a genus of flowering plants from the orchid family, Orchidaceae. At the present time, only one species is known: Aporostylis bifolia, native to New Zealand (including the Chatham Islands and the Antipodes Islands). File:Aporostylis bifolia.jpg|In Kahurangi National Park on alpine tussock land. File:Aporostylis bifolia 2.jpg|In Kahurangi National Park on alpine tussock land. File:Odd-leaved orchid (Aporostylis bifolia).jpg|Near Dunedin, in the Silverpeaks.

Aracamunia liesneri, collected by R. Liesner and F. Delascia in 1987, is the sole species in the orchid genus Aracamunia. It is the only orchid strongly suspected of being carnivorous. A. liesneri bears peculiar, rigid, tongue-like structures with apparently sticky tips emanating from the bases of its leaves.

Coilochilus is a genus of terrestrial orchids containing only one species, Coilochilus neocaledonicum, endemic to New Caledonia. This monotypic genus was described by German botanist Rudolf Schlechter in 1906 and is now placed in the subtribe Cryptostylidinae.

Thelyschista is a monotypic genus of flowering plants from the orchid family, Orchidaceae. The sole species is Thelyschista ghillanyi, endemic to the Bahia region of Brazil.

Papuaea is a monotypic genus of flowering plants from the orchid family, Orchidaceae. The sole species is Papuaea reticulata.

Evotella is a genus of flowering plants from the orchid family, Orchidaceae. It contains only one known species, Evotella rubiginosa, endemic to South Africa.

Herpysma is a genus of flowering plants from the orchid family, Orchidaceae. It contains only one known species, Herpysma longicaulis, native to Southeast Asia (Yunnan, Bhutan, Assam, Sumatra, Myanmar, Nepal, Bhutan, Thailand, Vietnam).

Lepidogyne is a genus of flowering plants from the orchid family, Orchidaceae. It contains only one known species, Lepidogyne longifolia, native to New Guinea and to Southeast Asia (Philippines, Malaysia, Borneo, Java, Sumatra).

Megalorchis is a genus of flowering plants from the orchid family, Orchidaceae.

Degranvillea is a genus of flowering plants from the orchid family, Orchidaceae. At the present time, there is only one known species, Degranvillea dermaptera, endemic to French Guiana

Rimacola elliptica, commonly known as the green rock orchid or green beaks, is the only species of plant in the orchid genus Rimacola and is endemic to New South Wales. It is an evergreen species which grows in clumps in sandstone cracks and has bright green leaves and in late spring, produces arching flower stems with up to eighteen dull greenish flowers with reddish or brown markings. It only grows near Sydney, mainly in the Blue Mountains and near Fitzroy Falls.

Cybebus is a genus of flowering plants from the orchid family, Orchidaceae. It contains only one known species, Cybebus grandis, native to Colombia and Ecuador

Pheladenia deformis, commonly known as blue fairy orchid or blue beard is the only species of the flowering plant genus Pheladenia in the orchid family, Orchidaceae and is endemic to Australia. It was originally named as Caladenia deformis and has since had several name changes. Plants have a single, narrow, hairy leaf and usually blue flowers with relatively short, broad sepals and petals and an unusual labellum.thumb|225px|Pheladenia deformis labellum detail

Pseudogoodyera is a genus of flowering plants from the orchid family, Orchidaceae. It contains one known species, Pseudogoodyera wrightii, native to San Luis Potosí, Cuba, Guatemala and Belize.

Cotylolabium is a genus of flowering plants from the orchid family, Orchidaceae. It contains only one known species, Cotylolabium lutzii, endemic to Brazil.

Praecoxanthus aphyllus, commonly known as leafless orchid, is the only species of the flowering plant genus Praecoxanthus in the orchid family, Orchidaceae and is endemic to the south-west of Western Australia. Plants in flower lack a true leaf, although those plants that are not flowering do possess a green leaf. This species is one of the first orchids to flower each year and its creamy white, fragrant flower easily distinguishes it from other species.

Stalkya is a monotypic genus of flowering plants from the orchid family, Orchidaceae. The sole species is Stalkya muscicola, endemic to the Mérida region of Venezuela. It is named after the orchidologist G. C. K. "Stalky" Dunsterville.

Aenhenrya is a monotypic genus of terrestrial orchids that spread by means of underground rhizomes. Only one species is known, Aenhenrya rotundifolia, a very rare plant and endemic to southern India (within Kerala and Tamil Nadu).

Spiculaea is a genus of plants defined by a single species, Spiculaea ciliata, commonly known as elbow orchid, and allied to the family Orchidaceae. Endemic to the south-west of Western Australia, the species is unusual in a number of respects; it grows in shallow soil on granite rock outcrops, grows and flowers in the hottest months of the year and has a unique method of using thynnid wasps as pollinators.

Fuertesiella is a genus of flowering plants from the orchid family, Orchidaceae. It contains only one known species, Fuertesiella pterichoides, native to Cuba and to the Dominican Republic.

Leporella fimbriata, commonly known as hare orchid or fringed hare orchid, is the only species in the flowering plant genus Leporella in the orchid family, Orchidaceae and is endemic to the southern Australia mainland. It is related to orchids in the genus Caladenia but has an unusual labellum and does not have hairy leaves. Its pollination mechanism is also unusual.

Waireia is a genus of flowering plants belonging to the family Orchidaceae. The only species is Waireia stenopetala.

Halleorchis is a genus of terrestrial orchids containing only one species, Halleorchis aspidogynoides, which is an endangered species native to Central Africa.

Thulinia is a monotypic genus of flowering plants from the orchid family, Orchidaceae. The sole species is Thulinia albolutea, endemic to the Nguru Mountains of Tanzania.

Meliorchis caribea is an extinct, early to middle Miocene orchid known only from a packet of pollen attached to the wing of a stingless bee, Proplebeia dominicana, trapped in Dominican amber. It was the first fossil orchid ever described, and allowed for a revised estimate of the time of origin of the Orchidaceae to the Mesozoic. Morphology of the pollinium suggests that M. caribea is closely related to the modern genus Ligeophila.

Oligophyton is a genus of flowering plants from the orchid family, Orchidaceae. It contains only one known species, Oligophyton drummondii, endemic to the Chimanimani Mountains of Zimbabwe.