FLORA OF VIETNAM Polypodiaceae s.l. Microlepia sp.
N. Vietnam, Son La prov., Moc Chau distr., Long Luong municipality, near Sang Cai village (20°45′51′'N, 104°51′26′'E). Secondary broad-leaved evergreen forest on slopes of remnant limestone highly eroded ridge at elev. 1200-1300 m a.s.l. Terrestrial fern. Common.