A taxonomic revision of Tylophora (Asclepiadaceae: Marsdenieae) in Papuasia*

Abstract

The genus Tylophora R.Br. is revised for Papuasia (Irian Jaya, Papua New Guinea, Solomon Islands). Seven species are recognised, T. bilobata sp. nov., T. brassii sp. nov., T. cissoides Blume, T. flexuosa R.Br., T. glabriflora (Warb.) K.Schum., T. hellwigii Warb. and T. minima sp. nov., with a key to distinguish them. A neotype is selected for T. glabriflora. T. kenejiana Schltr. is reduced to synonymy under T. cissoides. Asclepias tetrapetala Dennst., Asclepias tenuissima Roxb. ex Schult., T. tenuis Blume. T. cuspidata Zipp. ex Decne. and T. polyantha Volkens are reduced to synonymy under T. flexuosa.

*Christensen Research Institute Contribution No. 116.