| Species name | Agaricus Bisporus |
| Common name | Cultivated mushroom |
| Cap | 2.5-15cm, hemispherical > convex > flattened, radially fibrous |
| Gills | White > pink > brown, crowded, free (often whitening at rim) |
| Stipe | 2-8cm, fairly stout, slightly tapered at base, bruising redish, single ring |
| Growth form | Small groups, trouping or tufted |
| Spore print | Brown |
| Spore features | Broad ellipsoidal, smooth |
| Habitat | Pastures, lawns, field margins |
| Season | Early summer-autumn |
| Distribution | Widespread, uncommon |
| Identifying feature | Red bruising on stem |
| Similar species | Similar to other Agaricus species but red bruising stem and mushroomy smell are a giveaway |
Irish Grassland Fungi 