Yellow Stainer - Agaricus xanthodermus
The cap is white and fairly smooth, and quickly turns yellow when cut or bruised; the base of the stem also turns yellow when cut. Young specimens often have a squareish appearance viewed from above. Spores are dark brown.
There are several similar species that slowly turn yellow when cut or bruised
Photograph from top down, side and underneath; your photos should show yellow staining on the cap and stem base.
Grassland, parks etc and under broadleaved trees.
Late summer to late autumn.
Fairly common and widespread in Britain.
Fairly frequent in Leicestershire and Rutland.
Leicestershire & Rutland Map
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Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2025+ | 2020-2024 | pre-2020
UK Map
Species profile
- Common names
- Yellow Stainer
- Species group:
- fungus
- Kingdom:
- Fungi
- Order:
- Agaricales
- Family:
- Agaricaceae
- Records on NatureSpot:
- 45
- First record:
- 17/10/2010 (Watson, Ashley)
- Last record:
- 04/10/2025 (Cunningham, Sally)
Total records by month
% of records within its species group
10km squares with records
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