Tylopilus is a genus of over 100 species of mycorrhizal bolete fungi separated from Boletus.

Its best known member is the bitter bolete (Tylopilus felleus), the only species found in Europe.

[7] Tylopilus means "bumpy or swollen pileus",[8] from the Greek tylos "bump" and pilos "hat".

[12] Fruit bodies of the genus Tylopilus are encountered as large stout bolete mushrooms, which generally arise from the ground or occasionally from wood.

[8] A key field character which distinguishes them from members of the genus Boletus is the presence of their pink-tinged pores (though these may be white when young).