Plants 10-12 cm tall. Rhizome erect, short, densely scaly; scales narrowly triangular, with opaque dark brown-black central stripe and paler clathrate border, entire. Fronds caespitose; stipe purplish black, shiny, 5-11 mm, abaxially terete, adaxially flat but laterally with separate reddish brown fingerlike projections; lamina linear, 6-12(-14) × 0.9-1.2 cm, apex obtuse with terminal deltoid segment, 1-pinnate; pinnae 20-30 pairs, (sub)opposite to alternate, sessile, middle pinnae elliptic to trapeziform-oblong, 4-6 × 2-3 mm, base asymmetrical, acroscopic side truncate to broadly cuneate, basiscopic side narrowly cuneate, margin entire to repand, apex obtuse; apical pinnae hardly reduced, lower pinnae slightly and gradually reduced, often hastate or becoming subdeltoid. Costa obscure, venation anadromously pinnate, veins 2 or 3 pairs, simple. Fronds herbaceous to subleathery, grayish green when dry; rachis purplish black, shiny, abaxially terete, adaxially flat but laterally with fingerlike projections, these separated and rarely coalescent at their base into a low ridge. Sori 2-5 per pinna, linear-elliptic, ca. 1 mm, median on subtending vein, located in apical part of pinnae; indusia grayish brown, semi-elliptic, entire, opening toward costa.
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