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Blackening Brittlegill

Edible Edible
Autumn Autumn
Summer Summer

A large brittlegill, one of the blackening species, which is not as brittle as you would assume. It is a rarely foraged species, but it might be your guide to help find a Penny Bun.

Mushroom Type
Common Names Blackening Brittlegill
Scientific Name Russula nigricans
Season Start Jul
Season End Nov
Average Mushroom height (CM) 2-7
Average Cap width (CM) 4-15
Please note that each and every mushroom you come across may vary in appearance to these photos.

Cap

Off white when young, its centre then becomes smoky before the whole cap turns to grey-brown then to black. Convex at first, then becoming flat with central depression. Skin is smooth, whitish when young. The margin is in-rolled until the mushroom is quite mature.

Gills

Attached to the stem (adnate), distant, thick, broad, and less fragile than the other brittlegills. Creamy white, reddening to blackening, forking at the stem. The edge of the gills often blacken first.

Stem

Cylindrical but the base can often be somewhat tapered. White when young, blackening with age. Solid, hard, its surface is smooth.

Flesh

Thick, tough, rigid, somewhat brittle. White at first, reddening than blackening when cut or bruised.

Habitat

Ectomycorrhizal with broadleaved and conifer trees, such as beech, oak, lime and spruce. Grows on acidic soil, in small to large groups, in open woodlands, parklands and cemeteries.

Possible Confusion

There are a few blackening Russula species, e.g. Crowded Brittlegill, Russula densifolia, but they have more crowded gills, and their taste is a bit spicier, not mild.

Spore Print

White. Sub-spherical to broadly ellipsoid, covered with small warts.

Taste / Smell

Taste mild, but not too pleasant, smell is faintly fruity. Its edibility ranking differs country by country, mostly considered inedible, but not in the UK. Here, it is edible, but considered poor.

Frequency

Common and widespread in the UK.

Spores

White. Sub-spherical to broadly ellipsoid, covered with small warts.

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