Yellow Swamp Brittlegill - Russula claroflava

Alternative names
Yellow Swamp Russula

Cap 4 to 10 cm in diameter, convex at first, later flattening and often with slightly depressed centre. Bright yellow, sometimes fading to ochre-yellow, the cap surface is smooth when dry and sticky when wet. The cuticle peels half-way to the centre, and the flesh beneath the cuticle is white, greying slowly where cut or broken. It has pale ochre-yellow gills.

Identification difficulty
Recording advice

Photographs required showing cap and gills.  Please also state the habitat – was it under Birch or Aspen?


It is usually found in woodland or damp places under Birch and Aspen.

When to see it

Mainly a summer and autumn mushroom in Britain, only occasionally found in spring.

UK Status

Widespread in Britain.

VC55 Status

Status in Leicestershire and Rutland not known.

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Leicestershire & Rutland Map


Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map