|Red List Category & Criteria:
||Neill, D. & Pitman, N.
||Valencia, R., Pitman, N., Léon-Yánez, S. & Jørgensen, P.M. (Ecuador Plants Red List Authority)
A vine endemic to Ecuador's eastern Andes, where it is known only from the type, collected before 1937 by the German botanist L. Diels in the Pastaza River valley, near the outlet of the Río Topo and the border of Tungurahua and Pastaza provinces. A taxonomic review of the genus is necessary in order to evaluate the species' conservation status, especially because the only type specimen was apparently destroyed in the Berlin herbarium during the Second World War.