Abstract

Two cycad species, Cycas nathorstii endemic to Sri Lanka and Cycas zeylanica native to Sri Lanka and islands of the Andaman Sea, are discussed. A new combination, Cycas zeylanica (J. Schuster) Lindstrom & K. D. Hill, is established, elevating this taxon from subspecies status on the basis of cataphyll and leaflet characters. Both Cycas species are lectotypified. Distribution of the two species is investigated, and a key to the species is provided.

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