Vietnam, Ha Giang Prov., Hoang Su Phi Distr., Ho Thau Municipality, around Chien Thang village, about 4 km to NW of Ho Thau village (22º37’24’’N, 104º38’00’’E) at elev. 1200-1300 m a.s.l.
Primary closed cloud evergreen broad-leaved forest with Rhodoleya and Rhododendrons along ridge composed with shale and granite with quartzite.Epiphyte on mossy trees. Occasional.No HAL 6703 10 March 2005.