Rhizome stout, up to 5 mm. diam., creeping, densely clad in dark red-brown linear-attenuate paleae up to 1 cm. long; stipites distributed along rhizome. Stipes stout, grooved, 20-40-(50) cm. long, dark reddish brown, densely clad in stiff patent dark hairs up to 1 cm. long, with swollen bases remaining as tubercles. Rhachis stout, similarly clad and coloured. Lamina 20-50 × 12-30 cm., 3-(4)-pinnate, brownish green, firm, thinly coriac., deltoid to broad-ovate, acuminate, veins and veinlets us. prominent. Primary pinnae up to 10-20 × 5-10 cm., stalked, obliquely deltoid to ovate-lanceolate, acuminate. Secondary pinnae up to 7 × 3 cm., ovate to lanceolate-oblong, acuminate, stalked. Tertiary pinnae sessile decurrent to very shortly stalked, up to 2 cm. long, narrow-oblong to narrow-lanceolate, pinnatifid; teeth narrow-lanceolate, aristate to acute. Sori up to 8 per tertiary pinnule, 0.75-1·5 mm. diam.; indusium round-reniform with narrow sinus.