Rhizome creeping, hollow with a double gallery-system, 3.5-4.5 cm thick, forming clumps to 0.5 m across, densely covered with sharply pointed spines 2-3 mm long. Phyllopods solid, not prominent. Fronds mono-to dimorphic, stalked, deeply pinnatifid; stipe 15-25 cm long, 2-5 mm thick; lamina 15-75 by 3-5 cm, decurrent on the stipe, dark green, coriaceous. Pinnae perpendicular to the rachis, sterile 1-1.5 cm wide, fertile 0.4-0.8 cm wide, apex rounded. Venation with recurrent free veinlets, veins hardly sclerified, appearing green. Sori round, 3 mm diam., immersed in marginal lobes. Sporangia c. 0.9 mm long; spores 64, to 65 µm long.
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