Rhizome without the scales 0.5-1.2 mm diam., white waxy under the scales. Scales red-brown without pale border, narrowed evenly towards the apex, not or seldom curling backward, not bearing multiseptate hairs, with marginal setae at least in distal part, peltate, 2.5-6 by 0.3-0.6 mm. Stipes dark brown, adaxially grooved, 0.1-5 cm long, glabrous or with few scales. Lamina compound, entirely divided into fine linear segments without obvious rachis, deltoid and broadest towards the base, glabrous, 0.6-4 by 0.5-3.5 cm. Longest petiolules 1-2 mm long. Pinnules of at least the larger pinnae anadromous. Ultimate segments or lobes obtuse or acute without a tooth, 0.5-4 by 0.2-0.4 mm. Ultimate segments of sterile compound leaves 0.2-0.4 mm broad. 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 not present. 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, semicircular or more or less triangular to rhomboid, about as wide as long, 0.3-0.8 mm, upper margin not elongated, truncate or slightly rounded, extending to lamina margin or not. Lamina generally extending into a tooth at both sides of a sorus.
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