|Red List Category & Criteria:
||Santiana, J. & Pitman, N.
||Valencia, R., Pitman, N., Léon-Yánez, S. & Jørgensen, P.M. (Ecuador Plants Red List Authority)
A vine endemic to Ecuador, where it is known from three subpopulations in wet coastal forest. The type specimen was collected in Esmeraldas province by G. Barclay in 1836, near Atacames. Recently recorded as C. lutea in the Río Palenque private reserve, by C. Dodson in 1978. Another subpopulation has been recorded in the upper watershed of Río Baba, in Pichincha province. Although is not recorded in Ecuador’s protected areas network, it is expected in the Reserva Ecológica Cotacachi-Cayapas. The principal threat is deforestation due to colonization and conversion of forest to pasture.