The world list of cycads

A list of the 305 currently recognized cycad species is given, along with citations of the original place of publication and the location of type specimens when known. Included in the list are currently recognized infraspecific taxa, brief geographical ranges, and a partial list of synonyms for each taxon.

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[18]  K. Hill.  The Cycas rumphii complex (Cycadaceae) in New Guinea and the western Pacific , 1994 .

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[26]  D. Stevenson,et al.  A new species of ceratozamia (Zamiaceae) from Veracruz, Mexico with comments on species relationships, habitats, and vegetative morphology in ceratozamia , 1986 .

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[28]  J. E. Eckenwalder.  Taxonomy of the West Indian cycads , 1980 .

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[34]  C. J. Chamberlain.  The Living Cycads , 1919 .