The Dutch Mycological Society reports that during the past 14 years, about seven fungi species, new for the Netherlands, are discovered every month.
Not many of these new species are gilled mushrooms, or agaricales, probably the best known fungi.
The newly discovered agaricales include Psathyrella berolinensis and Cantharellus melanoxeros.
Most of the newly discovered fungi species are ascomycota. Many of them are very small.
For instance, Amicodisco virella, rare everywhere in Europe, and discovered in the Netherlands recently.
Omphalina chlorocyanea in the Netherlands: here.
Dutch fungi atlas: here.
Lightning Makes Mushrooms Multiply: here.