The genus Cycas L is divided into four subgenera, all new, and thirty species are described, of which two are new. A new Asian genus, Epicycas de Laub., is recognized for several Cycas species and one undescribed species with a subterranean bulbous stem base. Keys to the subgenera of Cycas and their species, and to the genus Epicycas are given.

Additional Metadata
Keywords Cycas, Epicycas, morphology, taxonomy
Journal Blumea: Biodiversity, Evolution and Biogeography of Plants
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Released under the CC-BY 4.0 ("Attribution") License

Citation
de Laubenfels, D.J, & Adema, F. (1998). A taxonomic revision of the genera Cycas and Epicycas gen. nov. (Cycadaceae). Blumea: Biodiversity, Evolution and Biogeography of Plants, 43(2), 351–400.