''Secamonopsis microphylla'' is a plant species

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

to southern

Madagascar Madagascar (; mg, Madagasikara, ), officially the Republic of Madagascar ( mg, Repoblikan'i Madagasikara, links=no, ; french: République de Madagascar), is an island country in the Indian Ocean, approximately off the coast of East Africa ...

. It is a trailing or erect herb up to 1.5 m tall. Leaves are narrowly oblong, up to 10 mm long. Flowers in groups of 1–3, yellow, tubular, up to 1.2 mm long. The only other species in the genus is '' Secamonopsis madagascariensis'', also indigenous to

. It is taller, often twining, with larger leaves than ''S. microphylla.'' Civeyrel, L. & J. Klackenberg. 1996. A second species of the Malagasy genus ''Secamonopsis'' (Asclepiadaceae). Novon 6(2): 144–146
/ref>Klackenberg, J. 1992. Taxonomy of ''Secamone'' (Asclepiadaceae) s.lat. in the Madagascar region. Opera Botanica 112:5-127.

References

{{Taxonbar, from=Q15844897 Secamonoideae Endemic flora of Madagascar