]> GH barcode-00351469 Venezuela Territorio Federal Amazonas. San Carlos de Rio Negro, ca. 20 km S of confluence of Rio Negro and Brazo Casiquiare. Along Rio Negro, + or - 28 km S of San Carlos Desmoncus polyacanthos Martius Martius 2012-08-29 15:13:13 Howard L. Clark & P. Maquirino