A group of saprotrophic Agarics with white or pink gills discolouring chocolate-brown with spores, a ring or belts around the stipe and flesh usually becoming yellow, red or pink when damaged. Spores brown to dark brown.
Listed taxa:
- Agaricus arvensis, Horse Mushroom
- Agaricus augustus, the Prince
- Agaricus bernardii
- Agaricus bisporus var. bisporus, Cultivated Mushroom
- Agaricus campester, Field Mushroom
- Agaricus geesterani
- Agaricus praeclaresquamosus, Flat-topped Agaricus
- Agaricus silvaticus, Scaly Wood Mushroom
- Agaricus subperonatus
- Agaricus vaporarius, Compost Mushroom
- Agaricus xanthoderma, Yellow Stainer