Polypodiaceae s.l. Crypsinus sp. S. Vietnam, Prov. Kontum. Evergreen primary forest at 1900-2000 m alt. on W slope of Ngoc Linh mountain system on elevation to Ngoc Gua peak. On open dry rocky cliffs on top of ridge at 2000 m alt. Not rare. VH 1306 10.04.1995 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