Central Pennsylvania Wild Mushroom Club

 Growing on an acorn cap. I've photographed it only once although I've found it several times.Can't find anything on it, wish I'd have taken better pictures. It was found in proximity to the fungi that grows on black walnut shells at the fish hatchery near the Seig. Can't believe I  didn't get the underside! If you find it please try to get better pictures for me. Thanks