Son La Prov., Moc Chau Distr., Chieng Son comm., about 1 km to NE from Chieng Son Village, around point 20°46’02.0N 104°37’03.1E. Remnants of primary broad-leaved evergreen forest on tops of hills composed with karstic highly eroded yellow-white limestone at elevation 1150-1250 m a.s.l. Climbing shrub or semi-woody vine 1.5-2 m long on exposed mossy rocks on mountain top. Flowers red. Common.
Record creation: 2026-10-19, Аверьянов Леонид ВладимировичCitation: Specimen LE 01360680 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01360680