Hoa Binh Prov., Tan Lac Distr., Bac Son Comm., Hay Duoi Vill., Dinh Bang Mt., around point 20033′40″ N, 105007′20″ E, 850 m a.s.l., limestone mt. Edges of logged primary closed evergreen broad-leaved submontane forests, foot of slope Woody vine
CPC 571 23 Oct 2010 Hieu’ photos: 25665a- Coll.: NQ Hieu, PK Loc, NT Vinh, NS Khang & BV Sinh