FLORA OF LAOS
Polypodiaceae s.l.
Onychium sp.?

Vientiane Prov., Kasi Distr., Thong Mout village, around point 19°25′19.7”N 102°08′32.7”E.

Primary broad-leaved evergreen forest on very steep slopes and on cliffs of remnant mountain composed with solid crystalline highly eroded limestone at elevation about 1550 m.

Lithophytic fern on vertical cliff. Not common.

LA-VN 668 20 March 2013
Coll.: N.T.Hiep, L.Averyanov, N.S.Khang, P.V.The, S.Lorphengsy