Rhizome 6-8 mm in diam., glaucous underneath scales, densely scaly at least at apex; scales dark brown, narrowly lanceolate, ca. 5 × 0.7 mm, margin toothed. Stipe straw-colored or brown, 25-35 cm, base densely scaly, distally minutely scaly or glabrescent; rachis pale brown, minutely scaly throughout; lamina lanceolate in outline, 80-100 × 30-40 cm; lateral pinnae 30-40 pairs, sessile, linear, basal pinnae usually slightly shorter than next above, deflexed or spreading; middle pinnae subopposite, spreading or slightly ascending, straight or slightly falcate, 14-20 × ca. 2 cm, base subcordate or truncate, rounded auriculate on both sides, gradually narrowing from base to long attenuate apex, margin serrate, upper pinnae progressively smaller; terminal pinna 5-10 cm, basal portion irregularly lobed; lamina herbaceous or thinly leathery, green, glabrous or pubescent when young. Sori orbicular, at tip of simple included veinlets in costal areoles, in 1 row on each side of costa, distinctly sunken on abaxial surface and raised on adaxial surface.
