Caudex long-creeping, commonly 3-5 mm diameter when dried (to 8 mm in New Guinea); stipe 20-50 cm long, lightly flushed reddish, glabrous, scaly near base only, scales c. 5 mm long with filiform apex and widened base; lamina not or little dimorphous, to 50 cm or more long, consisting of a pinna-like apex and l-4(-6) pairs of pinnae, texture firm; apex commonly 20 × 3-4 cm (to 40 × 4 cm), sometimes united to uppermost pair of pinnae; basal pinnae usually unlobed (some New Guinea specimens have a small basiscopic lobe), commonly 24 × 3 cm (to 35 × 3.5 cm) with stalk 10 mm long, gradually narrowed to base and apex, usually entire; main veins 6-8 mm apart along costae, at 45° and upcurved, slender, cross-veins irregular, small veins slightly prominent when dried; both surfaces glabrous; sori small, on connected veins, mostly in 2 rather irregular rows between main veins with some additional ones especially towards the margin; indusia small, thin, glabrous, reniform.
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