S. Vietnam, Prov. Khanh Hoa, distr. Khanh Son, 42 km to NE from Dalat city. Open sedges swamp with Fokienia hodginsii on granite shelfes 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 herb up to 25 cm hg in open swampy places. Not common. VH 4322 24.04.1997 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5803-96)