Rhizome solid, flattened, plate-like, 10-20 cm wide, arched, with a hollow space between the dark underside and the substrate; occasionally with lateral branches. Scales scattered over the rhizome but denser on edges and underside; orbicular, 1-1.6 mm diam., with dark centre with thick-walled cells with small lumina and a gradual transition to the narrower marginal cells, margin with scattered glands. Phyllopods solid, not prominent. Fronds monomorphic, stalked, deeply pinnatifid; stipe 10-30 cm long, 2-5 mm thick; lamina 30-90 by 10-15 cm, decurrent on the stipe, dark green, coriaceous. Pinnae perpendicular to the rachis or ascending, c. 1 cm wide, narrowed at the base, apex acute to rounded. Venation with two rows of areoles with branching recurrent included veinlets. Sori 2 mm diam., deeply immersed, in a single row on each side of the costa, forming papillae to 1 mm high on the abaxial surface, to 30 (60) on each pinna. Sporangia 0.3-0.4 mm long, on stalks to 1 mm; spores 16 in each sporangium, to 75 µm long with filaments to 2 mm long, forming densely tangled packets.
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