Colon: Rio escandaloso (tributary of rio Boqueron), near mina n° 2, 13-150 m alt. Live material of the collection Dressler 5817 cultivated at MSBG greenhouse, acc. n°. W-2573.
Amazonas: about 15 km w of Manaus, near the Rio Negro, plants forming cover on hard clay soil in a clearing in humid forest. Plants collected by M.R. Mulfordaround 1952...
Amazonas, Rio Igara-Parana (affl. rio Putumayo), corr. La Chorrera, territoire des indiens WITOTO Jitomagaro, famille Kuiru (17 km en aval de la Chorrera). Près du "jofoï" 2 ; sol siliceux. Terrestre, fleurs blanches.