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., foot of mt. In logged primary closed evergreen broad-leaved submontane forests Woody vine, flowers white
CPC 500 22 Oct 2010 Loc’s photos: 25639a-al Coll.: NQ Hieu, PK Loc, NT Vinh, NS Khang, ND Hoa & BV Sinh photos Loc Grant from