Laos, Khammoune prov., Boualapha distr., Nong Seng village, Chanh Daeng mountain, around point 17°31'11.1"N, 105°46'41.4"E. Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 400-600 m a.s.l. Lithophytic undershrub to 1 m tall on exposed rocks near mountain top. Occasional. 11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 985b.
Fl. in horto 05 07 2021, Averyanov, L., Maisak T., AL 985b
Coordinates (geographic position):17° 31′ 11.1″ N, 105° 46′ 41.4″ E ±1000 mRecord creation: 2021-08-03, Leonid Averyanov, PhotoScan D2. Processing status: work_status_1Citation: Specimen LE 01077138 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01077138