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Medusa Mushroom

Edible Edible
Autumn Autumn
Summer Summer

This really tasty Agaric is still considered rare in most books but it seems to have become more common in the UK over the last couple of years. It grows in clusters so it’s found in large numbers but needs careful cleaning to remove grit.

Mushroom Type
Common Names Medusa Mushroom
Scientific Name Agaricus bohusii
Season Start Jul
Season End Oct
Average Mushroom height (CM) 15
Average Cap width (CM) 20
Please note that each and every mushroom you come across may vary in appearance to these photos.

Cap

A firm capped mushroom with brown triangular scales that are distinctly pointed and raised. The caps are often covered in soil as they burst through the ground so rapidly.

Gills

Typical Agaric gills starting whitish or pale pink and turning brown to dark brown. Crowded and free from the stem.

Stem

The long stems have a tapered pointy base like a spindle and grow from a central point ,with the mushrooms in each cluster joined at the base of the stem.
It starts with a whitish colour but often becomes brown,sometimes scaly below the ring. The flesh will bruisered-brown if damaged.

Skirt

The thick skirt is usually in the upper part of the stem. It’s pale brown an scaly and can appear double ringed.

Flesh

Initially white but rapidly turning red-brown when exposed and then becoming darker brown.

Habitat

Growing from soil usually under trees in mixed woodland and parks.

Possible Confusion

It could easily be confused with the Clustered Mushroom (Agaricus subperonatus/cappellianus/vaporarius) which is a good edible but gives a gastric upset to some people. The scales on the cap of the Clustered Mushroom are never raised.

The Inky Mushroom (Agaricus moelleri) is the most similar toxic species but this has a phenol/Indian ink/iodine smell to put you off and each mushroom grows individually from the soil and not from a central point. A

A couple of edible Agarics can look similar but the clustered nature, raised scales on the cap and deep rooting stems of Agaricus bohusii are good aids for identification of this mushroom. The generic rule for Agaricus applies: being 100% it’s an Agaricus species, if doesn’t smell of phenol/carbolic and doesn’t stain bright yellow then it’s edible.

Spore Print

Chocolate brown. Ellipsoid.

Taste / Smell

Mushroomy but the soil should be removed thoroughly otherwise a gritty meal will ensue. Should be cooked before consumption.

Frequency

It has been considered rare or at least uncommon, but in the last years we have seen an increase in appearances and it’s becoming more common. As it grows in dense clusters it wouldn’t be of any harm to pick a couple for a meal, but we must stress the importance of leaving more than half behind.

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