Stereum lobatum

Stereum lobatum (false turkeytail) is a basidiomycete crust fungus, which means it does not have the traditional mushroom gills nor stem, but rather grows flat or with shelf-like protrusions on wood. The spores are produced on basidia, just like the gilled mushrooms, but instead of gills, the hymenophore (spore-bearing surface) directly houses the reproductive parts. In North America S. lobatum was long thought to be S. ostrea, but the recent accessibility to DNA sequencing has revealed that the two are distinct, and that S. ostrea is native to Indonesia and is not found in North America....read more on Wikipedia.