Rhizome without the scales 2-4 mm diam., not white waxy. Scales nearly black with pale border quickly diminishing or disappearing towards the apex, distinctly acicular, often curling backward, bearing multiseptate hairs at least when young, peltate, 6-10 mm long. Stipes dark brown, adaxially grooved, 2-17 cm long, glabrous or with few scales. Lamina imparipinnate, leaflets entire or nearly so, occasionally lobed at the base or once branched (pairs of leaflets 2, occasionally 3 or 4), glabrous. Leaflets entire or nearly so, sometimes with some basal lobes. Sterile terminal leaflet 2.5-16 by 13-25 mm. Lateral leaflets 2.5-12 by 0.8-2.5 cm. Margin flat or nearly so, distinctly crenulate to dentate at least towards the apex. Petiolules 0-4 mm long. Leaflets of fertile leaves entire or nearly so, sometimes with some basal lobes. Fertile terminal leaflet 8-19 by 0.7-1.5 cm. Lateral leaflets 4-14 by 0.4-1.2 cm. Margins distinctly crenulate to dentate at least towards the apex. Longest petiolules of the fertile leaves 0-4 mm long. Pinnae narrowly ovate or linear (narrowly). Leaf axes glabrous. Margins of the lamina of each leaflet not thickened. Veins in sterile ultimate lobes parallel, once or twice branched from the base, reaching the margin. False veins not present. Sori separate (sometimes nearly connate, in a band along the margin) at the forking point of veins. Indusium also attached along the sides, pouch-shaped, oblong, longer than wide, 1.5-2.5 by 0.75-2 mm, upper margin not elongated, truncate or slightly rounded, separated from to even with lamina margin.
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