FLORA OF VIETNAM Polypodiaceae s.l. Pteris unilaterale?
Thanh Hoa Prov., Thuong Xuan Distr., Bat Mot Municipality, Duc village, Xuan Lien Natural Reserve.
Secondary broad-leaved evergreen forest on very steep mountain slopes composed by shale at elevation 800-900 m a.s.l. around point 20°00′37.0″N 104°57′16.9″E.
Terrestrial fern in rather open place along road. Common.