Caudex erect; stipe dark, minutely hairy throughout, the basal 20 cm persistently scaly, the scales spreading and not rigid, to 20 × 1 mm; basal pinnae to 64 cm long, bearing one pair of short-stalked pinnules; basiscopic pinnule to 30 cm long and 6 cm wide, near its base lobed more than halfway to the costa, costules of lobes to 2 cm apart, lobes falcate, acute, entire; second pair of pinnae bearing 1 pair of adnate pinnules; apical part of frond and of basal pinnae more than 30 cm long, near its apex lobed to 2 cm from its axis, less deeply towards its base, the lobes almost contiguous and narrowly acuminate, the basal ones 5-6 cm wide, lobulate 1/3 towards their costae; lower surface of all parts bearing copious hairs not more than 0.1 mm long, the smaller ones appearing to be capitate, the larger ones obtuse; upper surface of costae and costules densely covered with hairs 0.2 mm long, no hairs between veins except near margin; sori rather large, in 1 row on each side of main veins in lobes of pinnae and of apical lamina, some additional ones also present near costae of pinnae, mostly on free veins in areoles, not forming prominences of the upper surface; indusia thin, rather irregularly reniform with minute marginal papillae; spores minutely and copiously spinulose.
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