Scales on main rachis-apex not seen; scales on primary branches and costae beneath very copious, light brown, larger ones 4-5 mm long and 1 mm wide, those on costae commonly 2 mm long and more than 0.5 mm wide, thin, fringe fine, close, concolorous; smaller scales narrower with long fine fringe and hair-tips; no persistent stellate hairs on veins except in sori. Primary rachis-branch more than 100 cm long (collector's note); costae l.5 cm apart, at right angles to rachis; largest pinnules 15-16 cm long, 2.5-3 cm wide, lobed almost to the costa, basal lobes slightly reduced and very close to the rachis; costules c. 4 mm apart, very slightly oblique; lamina-segments thin but firm, hardly narrowed above the base, edges slightly reflexed when dry so that sinuses between segments are 1-2 mm wide; lower surface glaucous, veins distinct and slightly raised; lamina on each side of the costa on upper surface raised as in G. gigantea Wall, and some long hairs persistent in the groove, veins slightly sunk in Upper surface of lamina when dry. Sori commonly of 3 sporangia, with numerous pale hairs nearly 1 mm long.
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