Luang Prabang prov., Pon Xay distr., along the way to Bane Phou Souong village, Pha Hiua Bin Toc Mountain, around point 19°57'37.0''N 102°25'03.0''E. Degraded primary evergreen and semideciduous forest on very steep rocky mountain slopes composed by solid marble like highly eroded limestone at elev. 600-850 m a.s.l. Woody vine 6-8 m long on open mossy rocky mountain top. Flowers pink with purple nerves. Locally common. LA-VN 2152, 5 April 2017.
Record creation: 2020-02-29, Аверьянов Леонид ВладимировичCitation: Specimen LE 01073020 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01073020