Paxillus vernalis aka filamentosus
While the description of this species in Wikipedia locates it only in America, there are multiple sightings of this species in Europe. In Belgium you can see here the multiple spottings:
https://waarnemingen.be/species/15118/photos/?page=2
My spotting was made in Meerdaalbos, Oct 2013.
Other web sites linking the species to Europe:
https://boletales.com/genera/paxillus/p-vernalis/
''Paxillus vernalis'' is a basidiomycete fungus found in montane forests in northern North America. It closely resembles the poisonous ''Paxillus involutus'', and is considered likely to also be poisonous. The fungus was described as new to science by Scottish mycologist Roy Watling in 1969.