Albatrellus ovinus, also known as Sheep Polypore, is a creamy to pale grey-brown polypore that looks like an agaric or a hedgehog mushroom from above, but it has minute pores on the underside. It stains lemon or greenish-yellow, particularly on the pores. The skin of the convex cap often cracks with age. It has a sturdy stem and very firm, mild to slightly bitter white flesh. The mushroom grows under conifers, mycorrhizal with spruce on moss-covered soil.
Albatrellus confluens is more orange and does not stain yellow; it tastes bitter.
on the First Nature Web site.
on the MushroomExpert.Com Web site.