Orchidaceae Juss. Anoectochilus acalcaratus Aver., sp.nov. S. Vietnam, Prov. Kontum. Close evegreen primary forest on N slope of Ngoc Linh mountain system at 2100 m alt. Terrestrial herb in shadow wet places along stream, sometimes abundant. Leavers very deep green. VH 627 10.03.1995 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