Stipe to 35 cm long, slender, atropurpureous, glossy, minutely hairy in the adaxial groove; lamina trifoliate, the apical part trilobed with cuneate base and acuminate lobes, or 5-lobed (basal lobes small), to 25 cm long and 22 cm wide; main veins to 10 mm apart along the costae, at a wide angle, distally upcurved, cross-veins mostly almost straight with many areoles between them; short pale erect hairs present between veins on the lower surface with somewhat longer ones on costae, upper surface not seen; sori all close to the margin, 1.5 mm diameter, apparently on connected veins; indusia almost peltate, persistent.
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