FLORA OF VIETNAM
Polypodiaceae s.l.
Cyrtomium sp.

Cao Bang Prov., Thong Nong Distr., Yen Son Municipality, Ngan Vai village, around point 22°46′53″N, 105°52′58.7″E.

Primary fractionaly logged coniferous forest with Pseudotsuga sinensis along highly eroded rocky limestone ridge at elevation about 1300 m a.s.l.

Terrestrial and lithophytic rosulate fern on shady steep slopes and on cliffs. Not rare.

7 October 2013 CPC 5446
L.Averyanov, N.T.Hiep, L.M.Tuan, N.S.Khang, T.Maisak, L.Osinovets