Petioles 1-2(-4) cm long, 1/15-1/20 of the length of the lamina. Lamina 1.25-2 cm wide, widest above the middle, very gradually long-tapering at the base, rather shortly acuminate at the apex, with 25-80 pinnules to a side. Larger pinnules 6-9 mm long, 3-4 mm wide, mostly 1/4-elliptic, occasionally subligulate, mostly with straight lower and outward increasingly convex upper margin and ± distinctly angular at the junetion of outer and upper margins. Incisions various, occasionally none, usually 1-3 per pinnule, 0.5-1, sometimes to 2 mm deep and then reaching to or the outer ones beyond the middle. Upper pinnules as in subsp. lucida. Lower pinnules from above the middle of the lamina downward gradually and strongly reduced, many lower ones auriculiform, 1-2 mm long, sterile, crenate to cleft. Indusium 0.2 mm wide, not reaching the margin, usually reflexed and ± concealed at maturity. Spores c. 20 (x, otherwise as in subsp. lucida.
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