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Deadly Fibrecap vs Field Mushroom

Inocybe erubescens and Agaricus campestris are confused for one another often enough to be worth putting next to each other.

Inocybe erubescensDeadly FibrecapPoisonous

Very high muscarine content: sweating, salivation, tears and collapse within 30 minutes.

Agaricus campestrisField MushroomEdible

The classic meadow mushroom: pink gills darkening to chocolate brown, pleasant mushroomy smell, no yellow staining.

Side by side

Inocybe erubescensAgaricus campestris
In this gamePoisonousEdible
HabitatBroadleaf woodland and parkland on chalk, especially under beech and lime.Grazed pasture, meadows and lawns, away from trees.
SeasonLate spring to summer.Late summer to autumn.
Spore printDull clay-brown.Dark brown.

The recorded spore prints differ: dull clay-brown for Inocybe erubescens, dark brown for Agaricus campestris. That is one documented difference, not a test you can pass.

This comparison cannot make a mushroom safe to eat. It sets out the few characteristics this game records, in general terms, for two species that vary by region, age and growing conditions. Real specimens overlap in ways no table and no photograph can separate, and the deadly one here is deadly in a single meal. Ask a qualified local expert, every time.

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Inocybe erubescens is also confused with Fairy Ring Champignon.

Agaricus campestris is also confused with Yellow Stainer, Death Cap, Livid Entoloma, Deadly Dapperling and Horse Mushroom.

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