Strobilomyces strobilaceus, commonly known as Old man of the woods, is a medium to large bolete which is characterized by very soft dark grey to black pyramidal and overlapping scales on the cap surface.

Cap at first convex-shaped and flatten out with age. It is covered with upright blackish scales that are woolly when the caps are young, becoming firmer on ageing specimens. Pores on the underside of the cap are hexagonal, coloured dirty white or grey. The flesh is thick and initially white, but will stain pink and then slate grey and black after exposure to the air. Stem coloured like the cap and has a woolly surface and a thick, ascending ring-like structure at the top. Spores are black.

Synonymes The name Strobilomyces floccopus is commony used for the mushroom in North America.

Strobilomyces strobilaceus on the First Nature Web site.