Description:
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Rhizome long-creeping, to 5 mm diameter; rhizome scales to 5 x 1.5 mm, dark or mid-brown, lanceolate in outline, margins subentire, colour uniform. Fronds widely spaced, 50–85 cm high. Stipe 23–32 cm long, with shiny brown triangular-ovate minutely toothed acute scales to 3 mm. Lamina dark green, lanceolate in outline, 32–44 x 18–20 cm, apex gradually tapering to a point, 3-pinnate to 3-pinnatifid, lower pinnae very slightly reduced. Pinnae in 20–25 pairs, opposite or alternate, triangular-lanceolate in outline, 10–13 x 3–4 cm, prolonged into a pinnatifid-lobed apex; pinnules obliquely ovate or ovate-oblong in outline, 5–7-lobed or -pinnatisect in lowermost pinnules, with basiscopic base dimidiate-cuneate, acroscopic base subtruncate to cuneate with enlarged lobe, apices irregularly subincised dentate-truncate, veins flabellate, subglabrous above, beneath with sparse shiny brown triangular-ovate scales to 1 mm, mainly on veins. Rhachis and pinnae rhachis with scales similar to stipe. Sori mostly along the pinnule centre and a few in the basal lobes, linear-oblong in outline, 2–5 mm long; indusium membranous, entire, ± 0.4 mm wide. |