Lateral branch-systems of small plants symmetrically forked twice, on larger plants forked to 3 or more orders, branches at successive forks alternately unequal; ultimate branches 15-20 cm long, 3-5 cm wide; costules 4-5 mm apart; segments of lamina brittle when dry, with recurved edges, when flattened c. 2.5 mm wide above the base, lower surface covered with very fine floccose entangled pale rusty hairs (c. 10 μ diam.) which are attached mainly along the veins, the veins thus persistently hairy on old fronds; stiff hairs present on dormant apices only; upper surface smooth, the veins very distinct and slightly raised when dry; accessory branches not normally present at the ultimate forks, but the lowest basi-scopic lobes of the ultimate branches usually larger than the rest, their edges more or less lobed.
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