N. Vietnam, Prov. Quang Binh, distr. Minh Hoa, 72 km to NWW from Dong Hoi, municipalite Thuong Hoa, Yen Son village, limestone massif Ke Bang (N 17°40′ E 105°57′). Remnant open evergreen primary broadleaved forest along river in alluvial valley bottom between limestone ridges and mesas at 200 m alt. Palm up to 5 m hg with leaves 3-4 m lg. Common. Sometimes codominante of 3 forest stratum on valley and limestone ridges at 200-300 m alt. VH 4806 18.05.1997 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5803-96)