Pileus: convex at first, becoming planoconvex; 80 – 200 mm diameter; minutely floccose, overlain by a central persistent disc and large squamules; base colour cream, disc and squamules dark to light brown; margin entire and sometimes inrolled.

Stipe: cylindrical with a bulbous base; 80 – 250 × 15 – 25 mm; with a thick fleshy double ring which is moveable; glabrous white above ring, white fibrillose below.

Gills: free; distant; pale pinkish cream at first but turning olivaceous as the spores mature.

Flesh: white, but turning red on bruising or exposure to air.

Spore print: white.

Spores: broadly ellipsoid, with an apical pore; 9.5 – 12.5 × 7 – 9 µm; smooth, thick walled, slightly dextrinoid.

Notes: distinguished from Macrolepiota and other species by its olivaceous spores. Can cause gastric upsets if consumed.