Rhizome not known. Fronds 1.8 m tall; stipe at least 30 cm long (probably twice as long), ± glabrous; lamina bipinnate with 11–12 pairs of pinnae ( fide Thomas); pinnae narrowly triangular, ± 36 cm long, ± 14 cm wide with ± 10 free pinnules on either side; apical ones joined to form a pinnatifid terminal segment; rachis and secondary rachises pubescent with hairs which leave a stiff base when breaking off, the surface being slightly but distinctly rough to the touch; pinnules slightly stalked (stalk up to 3 mm long), upper ones narrowly triangular-lanceolate in outline, ± 4.5 cm long and 1.5 cm wide, crenately lobed, lobes up to ± 5 mm long; lower ones more broadly triangular in outline, up to 7 cm long and 4 cm wide, deeply pinnatifid with largest lobes lanceolate, ± 2 cm long, crenulate; surface with rather sparse appressed hairs, costa more densely hairy. Sori in sinuses of shorter lobes, ± U-shaped but up to 6 in the crenulations on each side of largest lobes and then lunate; paraphyses thin, 0.2–0.3 mm long, apical cell short, narrowly oblong and subacute.