Endoperidium: 1.5-7 cm wide, papery, spherical, sometimes flattened. Features several pores or mouths on upper surface which is grayish brown in color. Gleba is white when young, becoming brown and powdery with age, divided into loculi, each of which opens into an ostiole to release spores. Capillitial threads are free and simple.

Stalk: Several short, small stalks connect inner peridium to outer peridium.

Exoperidium: usually 5 to 12 rays, 1-6 cm long, light brown to brownish gray in color. Covering the endoperidium when young, splitting into rays with maturity, and opening/expanding when wet. Exoperidium is actually two layers, the upper layer being the mesoperidium. These two layers don’t easily separate and sometimes are indistinguishable.

Spores: Reddish-brown, spherical, heavily warted, 4-6 um in diameter.