Two species of Pitcaimia occurring in the Guianas are proposed to become synonyms (Pitcaimia leprieurii Baker = Pitcaimia rubiginosa Baker and Pitcaimia incamata Baker = Pitcaimia caricifolia Mart. ex Schult. & Schult.f.). Pitcaimia semijuncta Baker is resurrected as a recognized species and two inselberg species are proposed as new. Descriptions and drawings of the newly described species are provided, as well as an identification key to the 15 Pitcaimia species that occur in or are expected to occur in the Guianas.
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