1982, Bull.Bot.Res., 1, 1-2 : 112. Type: "Yunnan: Funing, alt. 1000 m. 22 Apr. 1940, in saxo C.W.Wang 88792". N. Vietnam, Hoa Binh prov., Mai Chau distr., Hang Kia municipality,. near Pa Khong village, (20°44'40"N, 104°52'32"E). Primary. broad-leaved evergreen dry forest with Pinus kwangtungensis along tops. of highly eroded remnant karst limestone ridge at elev. 1300-1440 m. a.s.l. Epiphyte and lithophyte. Flowers yellow with brown stripes, lip yellow with purple center. Unpleasant not fresh fish smelled. Not. common. No HAL 783