Found growing on an old Western hemlock stump, well-rotted. Thought I have found B. mirabilis, but cap not fibrilose. Instead has curious pimple-like bumps on it, especially towards the edge of the cap. SIZE: 5-6 inches across, flesh thick. GILLS: white to cream or yellowish, somewhat mis-shapen. After bruising with fingernail, quickly changing to aquablue (greenish-blue), but within 20 seconds turning nearly blue-black.