Phylum: Basidiomycota Family: Suillaceae
Suillus luteus (L.) Roussel
Slippery Jack
Locally common in groups under conifers. The common name is derived from the viscous cap when young
References:
Kibby (2011) British Boletes with keys to species
Breitenbach & Kranzlin (1991) Fungi of Switzerland, Volume 3, Boletes and Agarics, 1st Part
Overall (2017) Fungi: Mushroom & Toadstools of parks, gardens, heaths and woodlands