Abstract
The relationship between the Asian generaDisepalum Hook. f. andEnicosanthellum Ban (Annonaceae) is examined in a revisionary study. Despite the disparate perianth morphologies of the two genera, other characters support inclusion of all species in a single genus with nine species. The monocarp stalks in all species are found to be derived from the receptacle rather than the ovary, and are thus not homologous with those found in most other Annonanceae genera. Cladistic analysis indicates that the species on the mainland of Asia and of montane habitats are more primitive than the species of the lowlands and of Sumatra and Borneo. Two new combinations,Disepalum petelotii andD. plagioneurum, are necessary as a result of merging the two genera, and one species,D. aciculare, is described as new.
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Johnson, D.M. Revision of Disepalum (Annonaceae). Brittonia 41, 356–378 (1989). https://doi.org/10.2307/2807547
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DOI: https://doi.org/10.2307/2807547