FLORA OF VIETNAM Polypodiaceae Arthromeris wallichiana (Spreng.) Ching+
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. Lithophytic fern on high open vertical granite mossy cliff cowered with Sphagnum pillows. Occasionally common.