San Pedro. Río Autana. Margen izquierda del caño Cabeza de Manteco, a 1 km de la boca, caño afluente del río Autana
Notas
corola blanca, frecuente. Vicentini 2000 - Steyermark identified in 1987 and noted: but leaf apex acute. Calyx shape do not conform other specimens (Lisener 17934) and is different from the description: is distinctevely lobed and not truncateand remotely apiculate as stated by Steyermak as characterisitic for the species.