Monographs Details: Pterocarpus amazonum (Benth.) Amshoff
Authority: Maguire, Bassett & Wurdack, John J. 1958. The botany of the Guayana Highland--Part III. Mem. New York Bot. Gard. 10: 1-156.
Description:Distribution and Ecology - VENEZUELA : Amazonas: '' Arbol 7 m. Flores amarillas.'' Eio Orinoco between mouth of Rio Atabapo and Caño Masagua 10 km upstream, elev. 150 m, May 16, 1954, J. S. Level 94..
Discussion:This is the first record of this distinctive species in Venezuela; it was known previously from Amazonian Brazil, Colombia, Peru, and Ecuador. The species is characterized by swollen inflorescence-axes which serve as formicaria; it was formerly better-known as P. ulei Harms, but this is clearly a later name for the Bentham species, as Amshoff has shown.
Distribution:Venezuela South America