Cynanchum is a genus of about 300 species including some swallowworts, belonging to the family Apocynaceae. The taxon name comes from Greek kynos and anchein, hence the common name for several species is dog-strangling vine. Most species are non-succulent climbers or twiners. There is some evidence of toxicity.
Beclardia is a genus of flowering plants from the orchid family, Orchidaceae. There are two recognized species, both native to islands in the Indian Ocean:
Cottonia is a monotypic genus of flowering plants from the orchid family, Orchidaceae: the only known species is Cottonia peduncularis. It is native to India and Sri Lanka. The genus was erected by Robert Wight and named after Major F. Cotton, an amateur botanist who served in the Madras Engineer Group and collected the species from Tellichery.
Cyrtorchis is a genus of flowering plants from the orchid family, Orchidaceae. It contains 18 currently accepted species, all native to Africa.
- Cyrtorchis acuminata(Rolfe) Schltr.
- Cyrtorchis arcuata(Lindl.) Schltr.
- Cyrtorchis aschersonii(Kraenzl.) Schltr.
- Cyrtorchis brownii(Rolfe) Schltr.
- Cyrtorchis chailluana(Hook.f.) Schltr.
- Cyrtorchis crassifoliaSchltr. in R.E.Fries
- Cyrtorchis erythraeae(Rolfe) Schltr.
- Cyrtorchis glaucifoliaSummerh.
- Cyrtorchis guillaumetii(Pérez-Vera) R.Rice
- Cyrtorchis hamata(Rolfe) Schltr.
- Cyrtorchis henriquesiana(Ridl.) Schltr.
- Cyrtorchis injoloensis(De Wild.) Schltr.
- Cyrtorchis letouzeyiSzlach. & Olszewski
- Cyrtorchis monteiroae(Rchb.f.) Schltr.
- Cyrtorchis neglectaSummerh.
- Cyrtorchis praetermissaSummerh.
- Cyrtorchis ringens(Rchb.f.) Summerh
- Cyrtorchis seretii(De Wild.) Schltr.
Eulophiella is a genus of flowering plants from the orchid family, Orchidaceae. It contains 5 known species, all endemic to Madagascar.
- Eulophiella capuronianaBosser & Morat
- Eulophiella elisabethaeLinden & Rolfe
- Eulophiella ericophilaBosser
- Eulophiella galbana(Ridl.) Bosser & Morat
- Eulophiella roempleriana(Rchb.f.) Schltr
Genoplesium commonly known as midge orchids, is a genus of about 50 species of flowering plants in the orchid family, Orchidaceae and is found in Australia, New Zealand and New Caledonia. Midge orchids are terrestrial herbs with a single leaf at the base of the plant. They are similar to orchids in the genus Prasophyllum in that plants without flowers have a hollow, onion-like leaf. The flowers are small but often scented and attractive to their insect pollinators. There is disagreement about which species belong to this genus and some taxonomists suggest that most belong in the genus Corunastylis.
Grammangis is a genus of flowering plants from the orchid family, Orchidaceae. It contains only two known species, both endemic to Madagascar.
Tylostigma is a genus of flowering plants from the orchid family, Orchidaceae, endemic to Madagascar.
Trichoceros is a genus of flowering plants from the orchid family, Orchidaceae. The genus is endemic to South America.
Hederorkis is a genus of flowering plants from the orchid family, Orchidaceae. It contains two known species, both native to islands in the Indian Ocean.
Megalorchis is a genus of flowering plants from the orchid family, Orchidaceae.
Neotinea is a genus of flowering plants from the orchid family, Orchidaceae. It is native to much of Europe, the Mediterranean region, and the islands of the eastern Atlantic, from the Canaries, Madeira and Ireland east to Iran and Western Siberia.
Oeceoclades, collectively known as the monk orchids, is a genus of flowering plants from the orchid family, Orchidaceae. It is related to Eulophia and like that genus is mostly terrestrial in habit. A few species extend into very arid environments, unusual for an orchid.
Physoceras is a genus of flowering plants from the orchid family, Orchidaceae. It is native to Madagascar and Réunion; it was also formerly present in Mauritius but now apparently extinct there.
- Physoceras australeBoiteau - Madagascar
- Physoceras bellumSchltr. - Madagascar
- Physoceras betsomangenseBosser - Madagascar
- Physoceras bifurcumH.Perrier - Madagascar
- Physoceras boryanum(A.Rich.) Bosser - Mauritius†, Réunion
- Physoceras castilloniiP.Bernet - Réunion
- Physoceras epiphyticumSchltr. - Madagascar
- Physoceras lageniferumH.Perrier - Madagascar
- Physoceras mesophyllum(Schltr.) Schltr. - Madagascar
- Physoceras perrieriSchltr. - Madagascar
- Physoceras rotundifoliumH.Perrier - Madagascar
- Physoceras violaceumSchltr. - Madagascar
Platylepis is a genus of flowering plants from the orchid family, Orchidaceae. It is widespread across sub-Saharan Africa and also on various islands of the Pacific and Indian Oceans.
- Platylepis bigibbosaH.Perrier - Madagascar
- Platylepis bombusJ.J.Sm. - Seram
- Platylepis commelynae(Lindl.) Rchb.f. - Society Islands
- Platylepis constricta(J.J.Sm.) J.J.Sm. - New Guinea
- Platylepis densifloraRolfe - Réunion
- Platylepis geluana(Schltr.) Schuit. & de Vogel - New Guinea
- Platylepis glandulosa(Lindl.) Rchb.f. - widespread across tropical and southern Africa
- Platylepis grandiflora(Schltr.) Ormerod - New Caledonia, Vanuatu, Futuna
- Platylepis heteromorphaRchb.f. - Samoa
- Platylepis intricataSchuit. & de Vogel - Papua New Guinea
- Platylepis lamellataSchltr. - New Guinea
- Platylepis margaritiferaSchltr. - Madagascar
- Platylepis occulta(Thouars) Rchb.f. - Madagascar, Réunion, Mauritius, Seychelles
- Platylepis polyadeniaRchb.f. - Madagascar, Comoros
- Platylepis rufa(Frapp.) Schltr. - Réunion
- Platylepis tidorensisJ.J.Sm. - Maluku
- Platylepis viscosa(Rchb.f.) Schltr. - Réunion
- Platylepis xerosteleOrmerod - Cameroon
- Platylepis zeuxinoidesSchltr. - New Guinea
Platyrhiza is a monotypic genus of flowering plants from the orchid family, Orchidaceae. The sole species is Platyrhiza quadricolor, endemic to Brazil.
Plectrophora is a genus of flowering plants from the orchid family, Orchidaceae. It is native to Central and South America.
Sacoila is a genus of flowering plants from the orchid family, Orchidaceae, native to the Western Hemisphere. It occurs in Mexico, Central America, South America, the West Indies and Florida.
Paralophia is a genus of orchids endemic to Madagascar. It contains two known species:
