FLORA OF VIETNAM. Pellionia grifithiana Wedd. S. Vietnam, Prov. Khanh Hoa, distr. Khanh Son, 42 km to NE from Dalat. city. Primary closed broadleaved evergreen forest on shelfes and along. bluffs of giant waterfall in upper reaches of Lieng Ly river. on E macroslope of Hon Giao mt. ridge at 1300 m alt. (N 12° 12', E 108° 44'). Terrestrial and epilitic herb up to 0.4 m hg on steep wet rocky river. slopes. Common. No VH 4313  24.04.1997. International Botanical Expedition of the U.S.A. National Geographic. Society (grant No 5803-96). . Collectors: L. Averyanov, N.Q. Binh, N.T. Hiep