Russula peckii has a viscid to dry cherry red cap that starts out convex to broadly convex and then becomes somewhat depressed with maturity. The cuticle peels half way to the disc. Its white attached gills are minutely fibriate, which means they have serrated or saw-toothed edges. Spore print is white. It has a white stipe flushed with red dots. It can be found in damp coniferous habitats, often growing gregariously in sphagnum moss in August and September. Taste is mild. A good edible.