| Species name | Agaricus xanthodermus |
| Common name | Yellow stainer |
| Cap | 5-15cm, hemispherical > convex-flattened |
| Gills | white > purple-pink > purple-brown, crowded, free |
| Stipe | 6-17cm, bulbous and equal, broad spreading ring (sheathed above) |
| Growth form | In small groups |
| Spore print | Purple-brown |
| Spore features | Broad elipsoidal, smooth. |
| Habitat | Lawns, verges, dunes |
| season | Late summer-Autumn |
| Distribution | Widespread, common-occasional |
| Identifying feature | Unpleasant ink smell, stipe base is a strong yellow (before bruising) |
| Similar species | Agaricus arvensis is similar but does not have a yellow stipe base and has a different stipe ring |
Irish Grassland Fungi 