Rhizome stout, far-creeping, sparsely clad in dark brown paleae; stipites distributed along rhizome. Stipes dark brown (blackish at base and there with a few paleae) up to 35 cm. × 3-4 mm.; rhachis grooved, nude. Lamina 15-45 × 5-24 cm., about ovate-oblong, acuminate, pinnate, us. either completely sterile or fully fertile. Pinnae of fertile laminae rather distant, coriac., acuminate, in about 15 pairs ascending at narrow angle, narrow-lanceolate, acute to acuminate, 5-15 × c. 1 cm., pinnatifid; segs deltoid-triangular to oblong, obtuse to subacute, sts apiculate, c. 5 mm. long. Pinnae of sterile laminae similar but spreading at a wider angle, submembr., segs ovate-triangular, up to 4 mm. broad. Lower pinnae not markedly reduced. Sori cop., close-set, under 1 mm. diam., or coalescing to form coenosori up to 5 mm. long, about medial. Indusium cordate-reniform.

n = 36