Rhizome without the scales 1-1.5 mm diam., white waxy under the scales. Scales red-brown, without pale border, narrowed evenly towards the apex, often curling backward, not bearing multiseptate hairs, with marginal setae at least in distal part, peltate, 4-6 by 1 mm. Stipes dark brown, adaxially grooved, 1-17 cm long, glabrous or with few scales. Lamina compound, tripinnate towards the base and in the middle part, deltoid and broadest towards the base, glabrous, 2-9.5 by 1.5-4 cm. Longest petiolules 1-3 mm long. Pinnae ovate. Longest pinnae 1-3.5 by 0.6-1.5 cm. Pinnules of at least the larger pinnae anadromous, rhomboid or linear oblong. Longest pinnules 4-15 by 3-5 mm. Ultimate leaflets linear oblong or rhomboid, lobed almost to the midrib. Ultimate segments or lobes obtuse or acute without a tooth, 1-3 by 0.5-0.8 mm. Upper ridge at the junction of the costa and pinna-rachis not swollen. Leaf axes glabrous. Veins in sterile ultimate lobes frequently simple, reaching the margin. False veins absent. Sori separate, frequently single on a segment, at the forking point of veins. Indusium attached at the broad base and hardly or not at the sides, more or less triangular to rhomboid, about as wide as long, 1 mm long and broad, upper margin not elongated, truncate or slightly rounded, extending to lamina margin or not. Lamina generally extending into a tooth at both sides or only at the outside of a sorus.
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