Rhizome scales to 10 by 1.5 mm, dull brown, distinctly clathrate. Bathyphylls as small as 5 cm long with apical pinna jointed to rachis; stipes of largest bathyphylls 25 cm long, lamina c. 30 by 14 cm, pinnae 10-15 pairs oblique to rachis, sessile, edges entire or somewhat sinuous, not toothed, largest 1 by 1.2 cm, texture firm, veins not prominent. Sterile acrophylls: stipe to 40 cm, fronds to 125 cm long; pinnae oblique, largest 26 by 2.5 cm, subsessile, base rather narrowly unequally cuneate, edges slightly undulate, not toothed, apex falcate acuminate, texture very firm, veins hardly prominent on either surface. Fertile fronds: pinnae commonly to 20 cm long (largest seen 40 cm), 3-5 mm wide, on stalks 3-7 mm long.
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