Rodolfo Vásquez; Bruce Gray; José Campos de la Cruz
Peru, Amazonas, San Martin, Depto. Amazonas close to the border with Depto. San Martin, along the road from Pedro Ruiz, past Laguna de Pomacocha to Rioja. The border between the departments is the watershed dividing the Rio Mayo (the San Martin side) and the Rio Chiriaco (the Amazonas side). Montane forest on sandstone (1) or limestone (2).