Rhizome of adult plant 3-4 mm ø, carrying fronds in two longitudinal rows; scales to 3 by 0.5 mm, clathrate with brown cell-walls. Sterile fronds: stipe 3-6 cm long; lamina to 25 cm long with 12-15 pairs of pinnae, apical one largest and jointed to rachis; a few basal pinnae gradually smaller and with rounded apices; middle pinnae of type to 4.5 by 0.9 cm, of another collection 8 by 1.1 cm, sessile, basiscopic base narrowly cuneate, acroscopic broadly so, apex tapered and acute, edges with an acute falcate tooth corresponding to each costal areole and irregular smaller intermediate teeth; veins forming one series of costal areoles and in the largest pinnae an irregular second series; small dark bullate-acuminate strongly clathrate scales abundant on lower surface of costa and a few on veins. Fertile fronds: lamina c. 15 cm long; pinnae 2 mm wide, largest 2½-5½ cm long, apex rounded, stalks 1 mm long.
Home