Hygrophorus pustulatus - <p><i><a href="//commons.wikimedia.org/wiki/Hygrophorus_pustulatus" title="Hygrophorus pustulatus">Hygrophorus pustulatus</a></i> from Commanster, Belgium. </p> <p><small>The determination of the species shown in this picture has been verified.</small> </p> © James Lindsey - CC BY-SA 3.0 - Wikimedia Commons