N.Vietnam, Bac Kan Prov., Cho Don Distr., Ban Thi Municipality,. village Phia Khao, around point 22°17'31"N, 105°31'51"E, Cau Muc. mountain at elevation 800-900 m a.s.l. Primary broad-leaved evergreen closed forest on very steep slopes and. cliffs near tops of rocky ridge composed with solid marble-like. stratified limestone. Lithophytic and occasionally epiphytic herb on tops of ridge. Occasional. No HAL 4855 24 May 2004. Collectors: L.Averyanov, N.T.Hiep, P.V.The, N.T.Vinh.
Coordinates (geographic position):22° 17′ 31″ N, 105° 31′ 51″ E ±1000 mRecord creation: 2019-05-30, Leonid Averyanov, PhotoScan D1Citation: Specimen LE 01054886 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01054886