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Stipe and rachis dark red-brown, almost glabrous; stipe 5–10 cm long, 0.7–1 mm diam. Lamina narrowly elliptic to ovate, almost glabrous, 25–35 cm long, 9–12 cm wide, stiff and harsh, 2-or 3-pinnate at base. Primary pinnae in 20–40 pairs, arising at c. 90° to rachis; longest 5–7 cm long, 17–25 mm wide; midribs winged. Longest secondary pinnae 8–13 mm long, 4–5 mm wide, doubly serrate, decreasing in size only towards apex of each primary pinna. Veins reaching margin at a sinus. Sori lacking paraphyses, protected by reflexed membranous flaps. Spores dark brown, almost smooth, 37–38 × 24–25 µm.
