Boletus fechtneri is an edible, rare Boletus

Boletus

Boletus is a genus of mushroom, comprising over 100 species. The genus Boletus was originally broadly defined and described by Elias Magnus Fries in 1821, essentially containing all fungi with pores...

mushroom found in warm, deciduous forest on chalk. Since it is rare, it should not be collected despite its good taste.

Description

The cap is convex, then cushion shaped, silver grey and later somewhat ochre, and up to 15 cm in diameter. The tubes are light yellow and the spores are olive. The flesh is yellow to white, turning green-blue when cut, with a mild taste.