Coprinopsis cinerea

Filamentous pileipellis, formed by rather broad hyphae, arranged parallel, with short cells, hyaline.

Cheilocystidia subglobose to slightly lageniform; pleurocystidia scattered, of similar morphology to the cheilocystidia.

Basidia clavate, widened at the apex, 4-spored.

Spores short ellipsoidal, dark brown, smooth, with an inconspicuous slightly eccentric apiculus at one end and a centered truncated germ pore at the opposite end.