FLORA OF VIETNAM Polypodiaceae s.l. Lindsaea orbiculata (Lam.) Mett. ex Kuhn
Son La Prov., Van Ho Distr., Chieng Xuan Municipality, Co Hong village, territory of Xuan Nha natural reserve, Pha Luong Mountain.
Remnants of primary and secondary broad-leaved evergreen forest on very steep mountain slopes composed by brown sandstone at elevation 700-1000 m a.s.l. around point 20°42′14.2″N 104°43′53.9″E.
Terrestrial fern on very steep, rather open mossy slope. Locally very common.