Paxillus involutus

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Paxillus involutus

21 October 2008 Surrey. Photograph copyright Leif Goodwin

Common Name

Brown Roll Rim

Cap

Convex, then flattened, usually with a depressed centre, velvety, especially at the margin, ochraceous to yellowish brown, to about 15 cm across

Gills

Decurrent, crowded, yellowish brown, darkening on bruising

Stem

Cylindrical, concolorous with the cap

Flesh

Ochraceous

Smell

Pleasant, fruity

Taste

Acidic

Season

Late summer to autumn

Distribution

Very common

Habitat

In deciduous woods, favouring birch

Spore Print

Sienna

Microscopic Features

Spores ellipsoidal, smooth (7-10) x (5-6) µm2

Edibility

Poisonous, potentially deadly. This fungus is widely eaten in Eastern Europe, especially Poland, where it is salted or pickled. Nevertheless stomach upsets are commonplace. The poisoning consists of gastrointestinal irritation, and haemolytic anaemia (the breakdown of red blood cells). The toxins can cause long lasting organ damage.

Additional Photographs

Paxillus involutus

September 2001 Surrey. Photograph copyright Leif Goodwin