Porphyrellus porphyrosporus

''Porphyrellus porphyrosporus'', commonly known as the dusky bolete, is a rare fungus belonging to the family Boletaceae. With its purple-brown cap and stem, ''P. porphyrosporus'' is not easy to spot, despite its large size. This summer and autumn species occurs under pines, but can also be found beneath deciduous trees. It is a large brown bolete. Its most distinctive features are the purple-brown spore print and the blue-green colour of the flesh at the top of the stem and above the hymenium.

This is a widespread species of Europe, especially in the north, but is nowhere particularly common. The fruit bodies appear from late summer to autumn, often in small groups, associated with broad-leaved trees such as beech and oak.