Vientiane prov., Kasi distr., Si Sang Vone village, around point 19°06'10.9''N 102°10'46.1''E. Secondary and primary evergreen dry forest on very steep rocky mountain slopes composed by solid marble like highly eroded limestone at elev. 600-750 m a.s.l. Clustering lithophyte and occasionally epiphyte on rocky mossy mountain top. Flowers bright yellow, fragrant. Not rare.
Record creation: 2020-05-19, Аверьянов Леонид ВладимировичCitation: Specimen LE 01073184 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01073184