N. Vietnam, prov. Ha Giang, distr. Yen Minh, municipality Du Gia, E slopes of Phu Tha Ca mountain system at 1900-2000 m elev. (N 23°56′ E 105°13′). Primary evergreen broadleaved very wet mossy cloud forest on quartzite very steep slopes. Epiphyte creeping shrublet with shoots up to 0.5 m lg. Flowers yellow. Very common.
CBL 2086 03 May 1999
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6300-98)