Rhizome not short-creeping, c. 2 mm ø; scales reddish brown, narrowly triangular, to 2 mm long, to c. 8-seriate at base, with a long uni-biseriate apex. Petioles stout, 4-5 mm ø at base, almost black, sublustrous, basally verruculose, abaxially sharply bi-angular above, downward gradually rounded, not pale-margined, to 60 cm long, about as long as the lamina. Lamina oblong, bipinnate, with c. 15-20 remote but ascending and often ± touching pinnae to a side; primary rachis blackish, abaxially sharply bi-angular, upward pale-margined and ± sulcate. Pinnae narrowly deltoid, shortly acuminate, c. 20 by 2.5-3 cm, basiscopically slightly narrowed at the base, pinnate, upward pinnatifid; secondary rachises dark, abaxially with one median or two lateral pale ridges. Upper pinnae gradually reduced, confluent into a pinnatifid leaf-apex. Pinnules up to c. 35 to a side, rigidly coriaceous, brown when dry, about twice their width apart, somewhat ascending, very narrowly lanceolate, the largerst c. 17 by 4 mm, pinnatilobate, with c. 9 lobes to a side, these broadly rounded, to 1 by 1 mm; apex obtuse; base cuneate, decurrent. Costa pale, abaxially prominent, obtuse, flexuous towards the apex; veins hidden, simple or once forked. Upper pinnules reduced, confluent. Sori 1, less often 2 or 3 per lobe, near the anterior margin, just inside the apex, uninerval; indusium blackish, pouch-shaped, 0.3-0.5 mm long, 0.3-0.4 mm wide, attached at the sides, not reaching the margin by little less than its width. Spores brownish, ellipsoidal, smooth, c. 35 by 25 μ.
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