Stipe to 60 cm long, lightly rufous and glabrous apart from sparse very short hairs near the base on the abaxial side, basal scales rather thin and to more than 2 mm wide; lamina to more than 100 cm long; basal pinnae longest, their bases very asymmetric, the stalk 2-5 mm long below the basal acroscopic lobe (which is up to 3.5 cm long) and more than 20 mm below the basal basiscopic lobe which is commonly 8-12 cm long (to 16 cm) and more than 2 cm wide, deeply lobed; second basiscopic lobe much shorter than the basal one; suprabasal pinnae to c. 30 cm long and 5-6 cm wide, lobed to 5 mm from costae, sinuses between lobes 2-3 mm wide, the lobes slightly falcate, distinctly but shallowly crenate-serrate near their acute tips only; veins in most pinnae once forked (twice forked only in the largest lobes), basal basiscopic veins often arising from the costa below the bases of their costules; all surfaces glabrous apart from sparse very short hairs near the bases of costae (seen only on young fronds); sori at the apices of acroscopic vein-branches; indusia little over 0.5 mm in diameter.
Home