Stipe to 20 cm long; basal scales 10 mm long, light brown, scales above base darker, 3-5 mm long, very narrow with inflexed margins; lamina commonly 20 cm long (to 35 cm); to 8 pairs of free pinnae and 5 or 6 pairs adnate; basal pinnae of mature plants a little shorter than the next pair, commonly 7 cm long with basal basiscopic pinnule 3.5 × 1.4 cm, deeply lobed; middle pinnae with one pair of free deeply lobed pinnules, distal part of these pinnae lobed almost to the costa, lobes oblique, acute, middle ones entire; lower surface of costae of pinnae bearing very narrow scales which are widened with some isodiametric cells at their bases; sori medial on pinna-lobes; indusia very small, often hidden by sporangia, bearing many very slender flexuous pale glands.
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