Coprinellus domesticus

Cellular pileipellis composed of spherical to slightly ovoid hyphae, hyaline or only very slightly pigmented ochraceous.

Universal veil hyphae elongated, constricted at the septa, without clamp connections, with ochraceous brown intracellular pigment and verrucose walls.

Cheilocystidia very abundant, spherical, ovoid to ellipsoidal, large and hyaline.

Pleurocystidia scattered, of similar morphology, but considerably larger than the cheilocystidia.

Basidia clavate and 4-spored.

Spores cylindric-ellipsoidal, dark brown in water under the microscope, smooth, with an inconspicuous apiculus at one end, a distinct centered germ pore at the opposite end, and vacuolar content.