Orchidaceae Juss. Cleisostoma williamsonii (Reichenb.f.) Garay S. Vietnam, Prov. Kontum. Open dry forest with Lithocarpus and Pinis khasya on S slope of Ngoc Linh mountain system at 800-1000 m alt. on elevation from Muong Hoong village. Epiphyte. Flowers white with purple marks on lip. Abundant. VH 1082 31.03.1995 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5094-93)
Participants: L. Averyanov, N.T. Ban, N. Q. Binh, A. Budantzev, L. Budantzev, N.T. Hiep, D.D. Huyen, P.K. Loc, N.X. Tam, G. Yakovlev