 Like most boletes it lacks a ring, and it may be distinguished from "Boletus edulis" and other similar species by its unusual pink pores and the prominent dark brown netlike pattern on its stalk.French mycologist Pierre Bulliard described this species as "Boletus felleus" in 1788 before it was transferred into the new genus "Tylopilus".It is the type species of "Tylopilus", and the only member of the genus found in Europe.