Pentopetia is a plant genus in the family Apocynaceae, first described as a genus in 1844.Decaisne, Joseph. 1844. Prodromus Systematis Naturalis Regni Vegetabilis 8: 500 in LatinTropicos, genus PentopetiaSchatz, G. E., S. Andriambololonera, Andrianarivelo, M. W. Callmander, Faranirina, P. P. Lowry, P. B. Phillipson, Rabarimanarivo, J. I. Raharilala, Rajaonary, Rakotonirina, R. H. Ramananjanahary, B. Ramandimbisoa, A. Randrianasolo, N. Ravololomanana, Z.S. Rogers, C.M. Taylor & G. A. Wahlert. 2011. Catalogue of the Vascular Plants of Madagascar. Monographs in systematic botany from the Missouri Botanical Garden.Venter, H. J. T. & R. L. Verhoeven. 1997. A tribal classification of the Periplocoideae (Apocynaceae). Taxon 46: 705–720.Choux, P. 1931. Asclepiadaceae. Catalogue des Plantes de Madagascar, Asclepiadaceae 1(9): 5–24.
The genus should not be confused with the related genus with a similar name, Petopentia.
SpeciesThe Plant List all are endemic to Madagascar
Formerly included Moved to other genera (Cryptolepis, Ischnolepis, Secamone) P. albicans now Cryptolepis albicans P. graminifolia now Ischnolepis graminifolia P. linearifolia now Secamone geayi P. natalensis now Ischnolepis natalensis
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