|Red List Category & Criteria:
||Santiana, J. & Pitman, N.
||Valencia, R., Pitman, N., Léon-Yánez, S. & Jørgensen, P.M. (Ecuador Plants Red List Authority)
A liana endemic to Andean Ecuador and the only species of the endemic genus Chimborazoa. Known from at least two subpopulations. The oldest collections, including the type collected by R. Spruce in 1859, are from an undetermined locale of Chimborazo province. Also recorded in that province near Huigra, in 1923 and 1944. Rediscovered by C. Cerón in 1987, in a forest fragment on the Río Pilaló in Cotopaxi province. Not known to occur inside Ecuador’s protected areas network. The principal threats are habitat destruction due to colonization and road construction. No specimens of this species are housed in Ecuadorean museums.