Cap: 3-11 cm; convex with an incurved margin when young, becoming flat or shallowly depressed; sticky when very fresh but soon dry; bald; finely rugged; brownish lilac to lilac brown or brownish purple or purplish gray; without concentric zones of color, or occasionally with faint zones.
Gills: Broadly attached to the stem or beginning to run down it; close; whitish to creamy; stained lilac to purple (eventually brownish) by the milk where damaged.
Stem: 3-10 cm long; 1-3 cm thick; club-shaped, becoming more or less equal with maturity; dry or slightly sticky when fresh; without potholes; whitish to purplish buff; often stained yellow in places, especially near the base; bruising and discoloring lilac to purple.
Flesh: White; staining lilac when sliced.
Milk: White; copious; staining tissues lilac to purple.