S. Vietnam, Prov. Lam Dong, distr. Lac Duong, municipalite Da Chay, vicinities Klong Lanh village, 31 km to NE from Dalat city. Old closed evergreen broadleaved secondary forest rich in primary elements along mt river on NW macroslope of Bi Dup mt system at 1450 m alt. (N 12° 08′, E 108° 39′). Terrestrial herb in shadow sandy place near stream. Flowers greenish-violet. Not common. VH 3280 27.03.1997 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5803-96)