Ruehssia cundurango is a species of plant of the genus Ruehssia native to Colombia, Ecuador and Peru in South America. It has the common name condurango.Jørgensen, P. M. & S. León-Yánez. (eds.) 1999. Catalog of the Vascular Plants of Ecuador. Monographs in systematic botany from the Missouri Botanical Garden 75: i–viii, 1–1181 The subspecies Ruehssia cundurango subsp. cundurango (synonym Marsdenia cundurango) is known to contain conduritol, a cyclitol or cyclic polyol. It was first isolated in 1908 by K. Kübler from the bark of the vine.Marsdenia condurango on www.crescentbloom.com
Subspecies , Plants of the World Online accepted two subspecies: Ruehssia cundurango subsp. cundurango – Colombia, Ecuador, Peru Ruehssia cundurango subsp. fosteri (Morillo) Liede & H.A.Keller – Peru
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