Stipe and rachis dark; base of stipe not seen. Lamina to 50 cm long; pinnae 18 pairs, widely spaced; basal pinnae not reduced, narrowed gradually in basal half, basal pair of lobes free, not enlarged, not dentate. Suprabasal pinnae to 10.8 x 1.6 cm with stalks long, apex narrowly acuminate; middle lobes somewhat falcate with rounded ends, separated by rather wide sinuses, edges slightly crenate; costules 4.5 mm apart; veins 7 pairs; lower surface lacking acicular hairs, costae bearing narrow scales (often uniseriate), no glands; upper surface with coarse brown hairs on rachis and costae, no others. Sori inframedial except basal ones, exindusiate; spores with many small wings.
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