Albatrellus ovinus, also known as Sheep Polypore, is a creamy to pale gray-brown polypore that looks like an agaric or a hedgehog mushrooom 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. 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.