| Description:
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Rhizome creeping or erect, 3–6 mm diameter; rhizome scales pale or dark brown, triangular or ovate in outline, apex gradually tapering to a point, clathrate, deciduous, 2–4 mm long, margins entire or sometimes (on same plant) with a few narrow teeth. Fronds shortly spaced or tufted, erect, slightly coriaceous, often proliferous at or near apex, occasionally proliferous at several pinnae apices. Stipe pale brown or green, once described as black with pale lines, 5–44 cm long, with scales similar to those of rhizome but soon glabrescent, often winged in the upper half. Lamina dark green, simple or imparipinnate with 1–2 pairs of (sub-)sessile subopposite pinnae, pinnae or lamina oblong-elliptic to lanceolate in outline, 4–22 x 1.5–6.5 cm, the terminal pinna slightly larger than the laterals, base slightly cordate to cuneate, margin wavy to lobed-toothed, apex tapering to a point, glabrous; veins forked, almost reaching the margin; rhachis similar to stipe. Sori many, evenly spaced and closely parallel along the oblique veins, reaching neither costa nor margin, 7–29 mm long; indusium membranous, linear, ± 0.3 mm wide, entire or with minutely fimbriate margin. |