FLORA OF VIETNAM Polypodiaceae Polystichum squarrosum (D. Don) F?e
Northern Vietnam, Lao Cai Prov., Van Ban Distr., Khanh Yen Ha municipality, to the SW of Na Nheo village (in the vicinity of point 21°57′34′'N, 104°13′49′'E). Primary evergreen broad-leaved wet montane forest with Fokienia hodginsii on steep granite and quartzite slopes of SW exposition at elev. 1800-1900 m a.s.l. Terrestrial and lithophytic fern on very steep shady rocky slope. Very common.