Cyathea ×marcescens

Trunk erect, to 8 m tall and 30 cm diam. Fronds 2–4 m long. Stipe 20–30 cm long, coarse, black, shiny, with sharp conical tubercles; persistent stipe bases crumbly; scales (at base) tapering, 2–6 cm long, coarse, glossy-brown, almost opaque, with fragile edges and a dark red seta at tip. Lamina subtriangular, 3-pinnate with pinnae slightly shorter near stipe, mid-green to dark green, paler underneath; primary and secondary pinnae narrowly oblong with shortly acuminate to acuminate tips; lower surface of rachises with various scattered scales; those of ultimate rachises somewhat inflated, with setae; those on midveins markedly inflated with hair tips or setae; upper surface of rachises with pale hairs. Pinnules attached by full breadth, slightly decurrent, margins shallowly toothed to lobed. Sori with ovoid, hairy receptacle, with tuft of longer hairs at tip; indusium at base of receptacle, and partly (or sometimes wholly) hidden, membranous, almost semicircular, slightly concave, pale with dark centre and irregular margin; spores usually absent.