Oncostemma

Oncostemma
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Eudicots
(unranked):	Asterids
Order:	Gentianales
Family:	Apocynaceae
Subfamily:	Asclepiadoideae
Genus:	Oncostemma; K.Schum.
Binomial name
	Oncostemma cuspidatum ; K.Schum.
Synonyms[1][2][3]
	Tylophora oblonga N.E.Br.

Oncostemma is a species of plants in the Apocynaceae first described as a genus in 1893.[1][4] It contains only one known species, Oncostemma cuspidatum, native to the Island of São Tomé off the coast of central Africa.[1]

References

Tropicos, genus Oncostemma
Omlor, R. & U. Meve. 1999. (1427) Proposal to conserve the name Tylophora oblonga against Oncostemma cuspidatum (Asclepiadaceae). Taxon 48(3): 597–598.
Brummitt, R. K. 2001. Report of the Committee for Spermatophyta: 51. Taxon 50(2): 559–568.
Schumann, Karl Moritz. 1893. Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie 17: 148 descriptions in Latin, commentary in German

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[9ii-1] Tropicos, genus Oncostemma

[2] Omlor, R. & U. Meve. 1999. (1427) Proposal to conserve the name Tylophora oblonga against Oncostemma cuspidatum (Asclepiadaceae). Taxon 48(3): 597–598.

[3] Brummitt, R. K. 2001. Report of the Committee for Spermatophyta: 51. Taxon 50(2): 559–568.

[4] Schumann, Karl Moritz. 1893. Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie 17: 148 descriptions in Latin, commentary in German