Gleasonia is a genus of plants in the Rubiaceae.Paul Carpenter Standley. 1931. Publications of the Field Columbian Museum. Botanical series 7: 372 There are at the present time (May 2014) five accepted species, all native to South America.Kew World Checklist of Selected Plant Families
Gleasonia cururuensis Egler - Brazil Gleasonia duidana Standl. - Brazil, Venezuela, Guyana Gleasonia duidana var. duidana - Brazil, Venezuela Gleasonia duidana var. latifolia Steyerm. - Brazil, Venezuela, Guyana Gleasonia macrocalyx Ducke - Brazil Gleasonia prancei B.M.Boom - Brazil Gleasonia uaupensis Ducke - Brazil
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