FLORA OF VIETNAM
Polypodiaceae s.l.
Onichium sp.?

N.Vietnam, Bac Kan Prov., Na Ri Distr., Liem Thuy Municipality,
village Lung Vai, around point 21°57′18′'N, 106°06′12′'E, at elevation
500-700 m a.s.l.

Primary broad-leaved evergreen closed wet forest on very steep slopes
and cliffs of rocky ridges and mesae composed with white solid
marble-like crystalline limestone.

Lithophytic fern on vertical cliff. Common.

HAL 4977 28 May 2004

Collectors: L.Averyanov, N.T.Hiep, P.V.The, N.T.Vinh.