Nitrous Bonnet

Mycena leptocephala

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Mushrooms

Mushrooms

By Roger Phillips

Published 2006

Nitrous Bonnet Mycena leptocephala (Pers.) Gillet (illustrated 70% life size) Cap 1–1.5cm across, bell-shaped; smoky grey, striate when moist; opaque and grooved when dry. Stem 30–55×1–2mm, base slightly rooting; greyish with paler apex; woolly white at base. Flesh whitish, darkening towards the stem base; thin; taste mild, smell strong, of ammonia or ozone. Gills pale grey with whitish edge. Spores 5–10×4–7¼, ellipsoid to subcylindrical; amyloid. Spore print whitish. Cheilocystidia cylindrical to fusoid, often forked at apex, thin-walled. Habitat in short grass; autumn. Common. Not edible too small and unpleasant-smelling.

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