Coprinopsis cinerea

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Coprinopsis cinerea

On composted straw and horse manure. 14 February 2025 Four Marks, Hampshire. Photograph copyright Leif Goodwin.

Cap

Initially egg shaped, cuticle greyish, densely covered with soft whitish scales, expanding with age, greyish to grey brown, radially furrowed, deliquescing from the margin, about 1 to 4 cm across

Gills

Crowded, free, narrow, whitish then black

Stem

Cylindrical, often broader at the base, scaly, whitish, often yellowish brown at the base

Flesh

Thin, soft, white

Smell

Indistinct

Taste

Unknown

Season

Spring to autumn

Distribution

Common

Habitat

On dung, mixed straw and manure, and compost

Spore Print

Black

Microscopic Features

Spores ellipsoidal to ovoid, smooth (8.5-12) x (6-8) µm2. Gill cystidia broadly ellipsoidal. Veil consisting of long chains of sausage like elements.

Edibility

Inedible

Notes

The specimens shown were growing in pots of composted horse dung and straw that were being used for germinating chilli and tomato seeds.

Coprinopsis cinerea

14 February 2025 Four Marks, Hampshire. Photograph copyright Leif Goodwin.

Coprinopsis cinerea

14 February 2025 Four Marks, Hampshire. Photograph copyright Leif Goodwin.

Coprinopsis cinerea

14 February 2025 Four Marks, Hampshire. Photograph copyright Leif Goodwin.

Coprinopsis cinerea

Spores in Congo Red solution viewed with a 100X immersion objective. 14 February 2025 Four Marks, Hampshire. Photograph copyright Leif Goodwin.

Coprinopsis cinerea

Gill cystidia in Congo Red solution viewed with a 40X objective. 14 February 2025 Four Marks, Hampshire. Photograph copyright Leif Goodwin.

Coprinopsis cinerea

Cap veil cells in Congo Red solution viewed with a 10X objective. 14 February 2025 Four Marks, Hampshire. Photograph copyright Leif Goodwin.