Two new books on identifying fungi have been published recently. They're fantastic, but you'll have to dig deep. More...
Mushrooms and Toadstools of Britain & Europe Volume 1 covers 650 species with colour illustrations, including key identification features such as colour reactions. Volume 2 will be published shortly.
Fungi of Temperate Europe is one of the most comprehensive mycological guides ever published. Featuring more than 7,000 photographs, this two-volume set describes more than 2,800 species of fungi across the region. As a taster, you can download the innovative "wheel keys" from these volumes: http://www.mycokey.com/Downloads/FungiOfTemperateEurope_Wheels.pdf