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Revision of Asiatic Poraneae (Convolvulaceae) – Cordisepalum, Dinetus, Duperreya, Porana, Poranopsis, and Tridynamia

G. Staples

Published 2006 in Blumea

ABSTRACT

The genera Porana Burm.f. and Cordisepalum Verdc. are taxonomically revised. Five distinct groups of species segregated from Porana are here recognized at generic rank and the names Dinetus Sweet, Duperreya Gaudich., Poranopsis Roberty, and Tridynamia Gagnep., are taken up for four of them. Porana Burm.f., s.str., is herein restricted to two species. Cordisepalum is maintained as a genus distinct from, and closely related to, Poranopsis. All names are typified, selected taxa and characters are illustrated, and distribution maps are provided for all taxa. In total 20 species, one comprising two subspecies, are recognized. Two new species, Cordisepalum phalanthopetalum and Dinetus rhombicarpus, are described and illustrated. Names for Porana described from Africa, Madagascar, and the Americas are dealt with in the Species Exclusae. An index of numbered collections examined is provided.

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