Rhizome without the scales 1-2.5 mm diam., usually white waxy under the scales. Scales red-brown to nearly black, without pale border, narrowed evenly towards the apex, not or seldom curling backward, not bearing multiseptate hairs, toothed, peltate, 6-8 by 1 mm. Stipes pale to dark brown, adaxially grooved, 1-7 cm long, glabrous or with few scales. Lamina simple, entire to pinnatilobed, linear, glabrous, 5-24 by 6-20 cm, leaf not or slightly dimorphous. Margins distinctly crenulate to dentate at least to-wards the apex. False veins absent. Sori separate at the forking point of veins. Indusium attached at the broad base and hardly or not at the sides, semicircular, about as wide as long, 0.5-0.8 by 0.6-0.8 mm.