N.Vietnam, Bac Kan Prov., Cho Don Distr., Ban Thi Municipality, village Phia Khao, around point 22є16'58''N, 105є31'20''E at elevation 800-900 m a.s.l. (Lung Chang and Lung Li mountains). Primary broad-leaved evergreen closed and coniferous (with Pinus kwangtungensis) forest on very steep slopes and cliffs along tops of rocky ridge composed with solid marble-like stratified limestone. Lithophyte on shady vertical cliffs. Flowers light green, later yellowish. Occasional. No HAL 4689 20 May 2004 (Photo). Collectors: L.Averyanov, N.T.Hiep, P.V.The, N.T.Vinh.
Coordinates (geographic position):22° 16′ 58″ N, 105° 31′ 20″ E ±1000 mRecord creation: 2020-10-31, Leonid Averyanov, PhotoScan D2Citation: Specimen LE 01074138 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01074138