Hoa Binh Prov., Tan Lac Distr., Bac Son Comm., Hay Duoi Vill., Lan Khoai Mt., around point 20034′32″ N, 105006′55″ E, 900 m a.s.l., limestone mt. In logged primary closed evergreen broad-leaved submontane forests, slope Shrub
CPC 538 22 Oct 2010 Coll.: NQ Hieu, PK Loc, NT Vinh, NS Khang, ND Hoa & BV Sinh Grant from