Polypodiaceae s.l. Diplasium sp. S. Vietnam, Prov. Kontum. Close evegreen primary forest on N slope of Ngoc Linh mountain system at 2000 m alt. Terrestrial fern with fronds up to 1 m lg. VH 645 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