FLORA OF VIETNAM
Polypodiaceae s.l.
Asplenium tenuifolium

N.Vietnam, Bac Kan Prov., Ba Be Distr., Nam Mau Municipality, Ba Be
National Park around point 22025′34′'N 105036′03′'E. Heavily logged
primary closed evergreen dry broad-leaved forest on steep slopes of
remnant mountains composed with crystalline highly eroded marble-like
limestone at elevation 660 m a.s.l.

Lithophitic fern in crevices of vertical shady cliff. Rare.

HLF 505 21 Dec. 2002.

Coll. Phan Ke Loc, L.Averyanov, Hoang Van Chat, Do Hoang Chung,
Nguyen Manh Hung, Vu Hong Van, Nguyen Tien Vinh, Mai Van Xinh.
Grant from Henry Luce Foundation.