Rhizome rather long-creeping, wiry, 0.4 mm ø, fuscous, dull; scales rather persistent, dark brown, scarcely 1 mm long, acicular, biseriate in the lower, uniseriate in the upper half. Petioles 1/2-3/4 cm apart, to 7 cm long, a little longer than the lamina, stramineous and quadrangular almost to the base, slender, 1/4-1/3 mm ø at the apex. Lamina c. 4-6 cm long, 3 cm wide, oblong, simply pinnate, with 4-5 pinnules to a side; rachis like the petiole. Pinnules thinly herbaceous, olivaceous when dry, translucent, somewhat ascending, their width or a little less apart, obliquely triangular, the base rather strongly cuneate, somewhat stalk-like, the apex subacute, the largest 15 by 4-5 mm, almost evenly narrowed from base to apex; upper margin with mostly 3 very oblique major incisions to 1 mm deep, the lobes with slightly to strongly and irregularly erose outer edge. Upper pinnules little reduced. Terminal pinnule free, flabellate-cuneate, 1-2 cm long, usually once deeply and once or twice shallowly bifid. Veins immersed, evident, very oblique, once or twice forked, forming one series of areoles, the outer veins not rarely free. Sori mostly bi-or trinerval, in the larger lobes often interrupted by the gashes in the margin, basally straight or with slightly concave ends; indusium 0.3-0.4 mm wide, subentire or usually erose, not reaching the margin by less than its width to reaching it, +-reflexed at maturity. Spores pale brownish, trilete, smooth, c. 20 [i.
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