FLORA OF VIETNAM Polypodiaceae s.l. Polystichum sp.
Quang Nam Prov., Dai Loc Distr., Dai Hong municipality, environs of Dai Hong town around point 15°49′44”N 107°57′19”E.
Rich secondary closed broadleaved evergreen forest on very steep rocky slopes composed with eroded sandstone along high waterfall sides at elev. about 250 m a.s.l.
Terrestrial fern on very steep rocky shady slope. Very common.