Gleasonia is a genus of plants in the Rubiaceae. There are at the present time (May 2014) five accepted species, all native to South America. 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 References Rubiaceae genera Henriquezieae