The taxonomy of Oreosparte (Apocynaceae: Asclepiadoideae)
2013
Rodda, Michele | Omlor, Ralf
Oreosparte is a monotypic genus described as bearing strong similarities to Hoya (Marsdenieae), but separated from it based on the presence of a campanulate corolla with a contracted throat and lanceolate, spreading lobes. Its type specimen was destroyed during the fire at the Berlin herbarium in 1943. So far no suitable lectotype or further specimens belonging to the taxon were located. We report the finding of one specimen of Oreosparte collected from the type locality, allowing the selection of a neotype, to provide an extended description, and discussion of the morphological affinities with Hoya . Based on its morphology, despite being probably closely related to Hoya , we suggest that Oreosparte should remain a separate genus until molecular evidence assists placement of its position in Marsdenieae.
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