N. Vietnam, Thai Nguyen prov., Vo Nhai distr., Than Sa municipality, vicinities of Kim Son village (N 21°48′ E 105°54′), 23.3 km to 18° of Thai Nguyen city. Primary broadleaved evergreen dry forest along tops of karst remnant limestone ridge at elev. 450-550 m a.s.l. Epiphyte and lithophyte. Abundant. NTH 3810 23 Oct. 1999 Collectors: N.T. Hiep, P.K. Loc, L. Averyanov.
Coordinates (geographic position):21° 48′ N, 105° 54′ E ±1000 mRecord creation: 2020-12-24, Leonid Averyanov, PhotoScan D2Citation: Specimen LE 01075385 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01075385