FLORA OF VIETNAM Appendicula hexandra (Koenig) J.J.Smith ? 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 (N 17ø40' E 105ø57'). Primary evergreen open broadleaved dry forest on top of limestone mesas at 450-500 m alt. Epiphyte. Flowers pale yellowish-white. Common, especially on tops of mesas. No VH 4644 16.05.1997 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5803-96) L. Averyanov, N.T. Hiep, P.K. Loc