Lithophytic fern forming large clumps with semi-erect fronds. Rhizome short-creeping, scaly, the scales narrowly lanceolate, to c. 4 mm long, c. 1.5 mm wide, with dark brown cell walls toward centre, becoming thinner and light red-brown toward margin. Stipe and rachis dark chocolate brown, becoming green near apices, brittle; stipe 5–25 cm long, 1–2 mm diam., scaly; rachis usually proliferous below terminal pinna, abundantly scaly; scales to c. 2 mm long, triangular at base, with long filiform apices, with dark brown cell walls. Lamina narrowly elliptic or narrowly ovate, pinnate, 18–45 cm long, 4–8 cm wide, dark green above, pale below; underside scaly; scales similar to rachis; veins conspicuous. Pinnae in 12–25 pairs, ovate or narrowly ovate, with an enlarged basal acroscopic lobe; bases unequally cuneate, shortly stalked; margins ± doubly serrate; apices obtuse to acuminate; longest pinnae at or below the middle, 2.5–4.5 cm long, 12–16 mm wide, gradually reducing upwards, usually ending in a large terminal segment. Sori to 10 mm long. Perispores pale with smooth broad prominent, ridges and smooth lacunae; exospores 32.1 and 40.8 µm long, 21.8 and 24.8 µm wide (means).
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