Plants 60-80 cm tall. Stipe straw-colored, 30-45 cm × 3-4 mm; lamina brownish green, ovate-oblong or narrowly ovate, 30-40 × 20-30 cm, usually 1-pinnate (rarely basal pair of pinnae bifurcate or trifoliolate), thickly papery when dry, abaxially densely hairy or sometimes glabrous, hairs gray or grayish brown and short, adaxially glabrous. Pinnae 2-4 pairs, basal pair lanceolate or oblanceolate, 15-22 × 2-4 cm, stalked (stalks 1-1.5 cm), base narrowly cuneate, margin serrate with fine cartilaginous sides, apex abruptly caudate to caudate-acuminate; distal pairs of pinnae as basal ones but slightly reduced, shortly stalked. Hydathodes extending to and fused with cartilaginous sides of teeth. Sori extending nearly to pinna margins.