Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Boletales
Family: Boletaceae
Genus: Chalciporus
Species: C. piperatus
Binomial name: Chalciporus piperatus
Synonyms: Boletus piperatus, Leccinum piperatum, Viscipellis piperata, Ixocomus piperatus, Suillus piperatus, Ceriomyces piperatus
Common names: Peppery bolete

Chalciporus piperatus is one of the smaller boletes. It a small, mycorrhizal mushroom with a dull reddish brown to pinkish tan coloured cap. The cap can be 2 to 9 cm across. They are initially hemispherical and become flat and. The cap surface can be furrowed; shiny when dry, it can be a little sticky when wet. Their margins can be slightly wavy. The caps flesh is yellowish to pinkish in colour. 
The yellow, thick, cylindrical, stipes up to 7 cm tall and up to 1.8 cm in diameter. The surface often has shallow longitudinal grooves. The mycelium can be a bright to dull yellow.
The pores colour ranges from cinnamon to dark reddish brown in maturity. When bruised, the pore surface stains brown.
Chalciporus piperatus are found growing alone, scattered, or gregariously during summer and autumn in mixed woodlands, often with conifers and birches.

A group of Chalciporus piperatus growing under large mature Engish oak.1-Chalciporus piperatus.jpg 

1-Chalciporus piperatus 2.jpg

Thanks to Wikipedia for text and information: https://creativecommons.org/licenses/by-sa/3.0/