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. Terrestrial and lithophytic herb to 1 m tall on steep shady rocky slope near mountain top. Not common. LA-VN 1836 28 March 2017 Coll.: L.Averyanov, N.T.Hiep, N.S.Khang, C.Q.Ngan, T.Maisak, Khamla Inkhavilay, Hongthong Southyvohanh, Pinmany Sisavath, Chanthala Cheuaysamphanh.
Coordinates (geographic position):19° 6′ 10.9″ N, 102° 10′ 46.1″ E ±1000 mRecord creation: 2019-01-13, Leonid Averyanov, PhotoScan D1Citation: Specimen LE 01048826 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01048826