Polypodiaceae s.l. Cyclosurus sp. S. Vietnam, Prov. Kontum. Secondary evegreen dry forest (rich in primary elements) at 1300-1400 m alt. on W slope of Ngoc Linh mountain system above Ngoc Linh village. Terrestrial fern with fronds up to 1.2 m lg. on open clay cliffs. Common on 1300-1400 m alt. VH 1173 04.04.1995 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