S. Vietnam, Prov. Lam Dong, distr. Lac Duong, municipalite Da Chay, 35 km to NE from Dalat city. Secondary shrub associations on NW macroslope of Bi Dup mt system at 1450 m alt. (N 12° 09′, E 108° 41′). Terrestrial herb up to 1.2 m hg in wet place. Flowers white. Not common. VH 3771 07.04.1997 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5803-96)