N. Vietnam, Prov. Quang Binh, distr. Minh Hoa, 72 km to NWW from Dong Hoi, municipalite Thong Hoa, vicinities of Yen Son village, limestone massif Ke Bang
International Botanical Expedition of the U.S.A. VH 4713
Vietnam, Ninh Binh Province, Nho Quan District. Cuc Phuong National Park, Bong, forest behind community guesthouse at entrance to Big Tree (Dracontomelum duperreanum). Forest at bottom of limestone hill. Site No: CP70. 300m