Houphan Prov., Viengxay Distr., Xieng Luong village, around point 20°22'06.1''N 104°17'18.6''E.
Primary and secondary broad-leaved evergreen dry forest on very steep rocky slopes of highly eroded mountains composed by solid marble-like limestone at elev. 600-700 m a.s.l.
Short creeping and ascending vine 0.5 m long on open mossy rocks on mountain top. Common.
Record creation: 2021-03-28, Аверьянов Леонид ВладимировичCitation: Specimen LE 01090700 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01090700