S. Vietnam, Prov. Lam Dong, distr. Lac Duong, municipalite Da Chay, 31 km to NE from Dalat city (N 12° 08′, E 108° 39′). Closed primary evergreen broadleaved mt forest on NNW macroslope of Bi Dup mt system at 1700-1800 m alt. Terrestrial and epilitic herb on wet shadow steep slopes. Flowers white. Common, especially along deep stream canyons. VH 4443 30.04.1997 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5803-96)
Collectors: L. Averyanov, N.Q. Binh, N.T. Hiep, P.K. Loc, P. Lowry