Phylum: Basidiomycota Family: Agaricaceae
Agaricus bisporus (J.E. Lange) Imbach
Cultivated Mushroom
This is the common mushroom you find in shops: the white and chestnut buttons are harvested before the cap expands, while Portobello mushrooms are taken when fully grown. There are supprisingly few records for this species in the wild for Scotland
References:
Kibby (2011 third edition) The Genus Agaricus in Britain
Læssøe & Petersen (2019) Fungi of Temperate Europe, Volume 1
Sanchez (2008) Fungi Europaei, 1: Agaricus