The genus Agaricus includes both the common Field Mushroom and the cultivated mushroom, both enormously important as sources of food. But as well as these two species there are a further 40 or more species present in Britain, not all of which are good edibles and some of which are toxic.
This book describes all of the 60 known British species and provides easy-to-use synoptic / pictorial keys to the species and includes over 50 photographs illustrating the majority of the British species.
Read 'Mushroom Identification: pro Tips from Top UK Mycologists' on the NHBS Blog.