Horse mushroom
Agaricus arvensis
The horse mushroom is one of the largest white Agaricus species in Britain. Its cap grows up to 20 cm and stains yellow when handled. It is known for its almond smell and cogwheel-patterned double ring, and can be confused with the yellow stainer and deadly Amanitas.
Where it's found
Meadows and frequently near stables; it may form fairy rings and is often found growing with nettles.
Distribution
Recorded in Britain, West Asia (Iran) and North America; common and widespread.
Similar species
Identification suggestions (from the community or from AI) and the information here may be wrong; this app never confirms that anything is safe to eat. Do not consume wild plants, mushrooms or seafood without expert confirmation. Nothing here is medical advice.