Thanh Hoa Prov., Thuong Xuan Distr., Bat Mot Municipality, Duc village, Xuan Lien Natural Reserve.
Primary broad-leaved evergreen forest on rocky, highly eroded, crystalline limestone at elevation 800-1000 m a.s.l. around point 20°01′11.6″N 104°57′47.5″E.
Terrestrial fern with fronds to 3 m long in shady place on very steep rocky slope. Common.