Rhizome without the scales 2-6 mm diam., white waxy under the scales. Scales brown, red-brown, or nearly black, without pale border, narrowed evenly towards the apex, not or seldom curling backward, bearing (woolly) multiseptate hairs at least when young, peltate, 6-8 by 1.5-2 mm. Stipes dark brown, adaxially grooved, 8-26 cm long, glabrous or with few scales. Lamina compound, bipinnate or pinnate with pinnatilobed to pinnatifid pinnae towards the base and in the middle part, deltoid and broadest towards the base or elongate, glabrous, 10-44 by 5-20 cm, leaf not or slightly dimorphous (but pinnulae of fertile leaves very narrow). Longest petiolules 1-4 mm long. Pinnae linear-triangular (curved upwards). Longest pinnae 4-13 by 1.5-3 cm. Pinnules of at least the larger pinnae anadromous. Pinnules or pinna lobes linear oblong. Longest pinnules 10-15 by 2-3 mm. Ultimate leaflets linear oblong, only shallowly lobed. Upper ridge at junction of costa and pinna-rachis not swollen. Leaf axes glabrous. Margins of the lamina of each leaflet not thickened. Veins in sterile ultimate lobes pinnate, reaching the margin. False veins present or not. Sori separate, borne several on a segment at the forking point of veins. Indusium also attached along the sides, pouch-shaped, oblong, longer than wide or about as wide as long, 1 by 0.5-1 mm. Indusium lips or upper margin not elongated, truncate or slightly rounded, extending to lamina margin or not. Lamina generally extending into a tooth only at the outside of a sorus.
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