Wanntorp, L; Meve, U: New combinations in Hoya for the species of Clemensiella (Marsdenieae, Apocynaceae), Willdenowia, 41, 97 – 99 (2011)
Key words: Hoya sect. Eriostemma, phylogenetic relationships, systematics, taxonomy
Clemensiella, with two species in the Philippines, Sumatra and Sarawak, respectively, has traditionally been considered as one of the distinct genera of the tribe Marsdenieae, based on morphological evidence. However, new molecular phylogenetic evidence has demonstrated that Clemensiella is nested within Hoya as sister group to species of H. sect. Eriostemma. Therefore we propose to merge Clemensiella with Hoya and provide the new combinations H. mariae and H. omlori for its two species.
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