Rhizome stout, ascending, branched, clad in dark brown ovate, acute paleae c. 5 mm. long; stipites tufted. Stipes stout, pale to greenish brown, smooth, paleate in darker lower portion; 20-60 cm. × up to 5 mm. diam. Rhachis stout, nude, ± flexuous, pale brown to stramineous, with numerous distant alt. to subopp. pinnae. Lamina pale to rather dark green, 3-12 × 2-9 dm., membr., broadly deltoid-ovate, 2-(3)-pinnate; veins free. Primary pinnae 15-40-(50) × 10-20 cm.; ovate-to lanceolate-oblong, acuminate to acute; costa stout in lower portion. Secondary pinnae up to 5 × 2 cm., about lanceolate; deeply pinnatifid to pinnatisect. Segs up to 15 × 5 mm., oblong to lanceolate-oblong, acute, subfalcate, crenate-dentate, teeth apiculate. Sori numerous, in irregular pairs oblique to midvein, oblong, up to 8 per pinnule, 2-3 mm. long. Indusium inflated, membr., curved.