Description:
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Rhizome short; rhizome scales narrowly lanceolate in outline, slightly tapering, emarginate at base, entire, formed of cells with brown walls. Fronds tufted. Stipe blackish violet, 10–20 cm long, glabrous. Lamina triangular, 5–6(–25) cm long and wide, bipinnate above, tripinnate at the base, glabrous. Pinnae 2–3(–6) pairs of opposite pinnae, the lowest petiolate, attaining 3 cm, triangular, obtuse, unequal at the base, divided to the winged rhachis into 2–3 pairs of pinnules up to 1.5 cm long, 7–8 mm wide, pinnatifid into rounded-cuneiform lobes; middle pinnae decurrent on the rhachis, divided almost to the costa into entire rounded cuneiform-fan-shaped segments 4–5 mm wide; segments covered with golden powder beneath or grey-puberulous in material seen. Sori placed along the veins. |