Cyathea cooperi

Trunk erect, to 12 m tall, and 15 cm diam. Fronds to 3.5 m long. Stipe to 50 cm long, coarse, pale brown, dull, with scattered tubercles; scales (at base) tapering, to 50 mm long, papery, whitish or pale brown, edges dark-orange brown and finely barbed, each with an apical seta. Lamina subtriangular, 3-pinnate, lowest pinna-pair slightly shorter than rest, mid-green, paler, almost glaucous underneath; primary and secondary pinnae oblong-lanceolate to narrowly oblong with acute or acuminate tips; lower surface of rachises with narrow brown scales; ultimate rachises and base of midveins mealy-brown underneath due to numerous stellate hairs and deeply barbed scales; upper surface of rachises with pale curled hairs. Pinnules sessile with broad bases, margins shallowly crenate-serrate. Sori with ovoid hairy receptacle, indusia inconspicuous, consisting of narrow fringed scales at base of receptacle.