These fungi grow in fields and meadows, usually in rings and particularly where horses are usually kept (hence the common name, the Latin name arvensis means "of the field").  Unlike true Field mushrooms (Agaricus campestre), the upper surface of the cap smells strongly of aniseed. Horse mushrooms are just as delicious as field mushrooms though and are perfect with eggs and bacon.

Key identifcation points:
Cap: 3-10cm, very rounded when young flattening out as they grow, slightly scaly, bruising slightly yellow Stem: white, broader at the base
Flesh: white
Scent: strong aniseed scent
Gills: white to pink and then to brown as the mushroom ages
Spore print: dark brown
Habitat: woodlands, pasture, parks and gardens
Season: summer to late autumn