18th September 2015, Knole Park, Sevenoaks
Growing in grass. Only one but another found 500 metres away. Cap 6.5cm. Smell slight and mushroomy. Very brittle stem. Could be another type of Agaricus (Field Mushroom or A. bresadolanus) but spore size is right for it to be A. porphyrocephalus. ID is guess. Sporeprint Dark brown. Spores 5-6.5µ x 3.5-4.5µ.

Spores