S. Vietnam, Prov. Lam Dong, 29 km to NE from Dalat city, distr. Lac Duong, municipalite Da Chay. Primary wet closed broadleaved cloud forest along main Bi Dup ridge at 2100-2200 m alt. (N 12° 06′, E 108° 39′). Epiphytic and epilitic fern on wet steep slopes. Common. VH 2954 21.03.1997 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5803-96)