Russula decolorans, also know as Copper Brittlegill, is a medium to large agaric that has a distinctively colored orange-brown cap, pale yellow gills and white stem. All parts of the mushroom is graying or blackening.
as young almost completely round, then convex to flat, often with a depressed center. At fist bright orange-yellow, then more subdued brick-red, sometimes with a darker center. Sticky in damp weather, and has smooth skin that can be removed. Gills
at first white, then creamy yellow and finally gray. Reaching but not attached to the stem. Stem
is white, graying readily when bruised or with age, more or less equal or somewhat club-shaped, stout, and smooth. The mushroom has no ring.
other Russula species.
on the MushroomExpert.Com Web site.