FLORA OF VIETNAM Plants of Phong Nha - Ke Bang National Park Polypodiaceae s.l. Asplenium cardifolium
Vietnam, Quang Binh Prov., Bo Trach Distr., Tan Trach Municipality, vicinities of A Rem village (17°23′32′'N, 106°12′46′'E).
Heavily logged primary closed evergreen broad-leaves forest on steep slopes of rocky ridge composed with solid marble-like highly eroded stratified crystalline limestone at elevation about 650-750 m a.s.l.
Terrestrial and lithophytic fern on shady rocky slope. Rare.