Wildlife Spotting

this is not clitocybe nuda- those faint, brown rings I see on each stem come from spores falling and sticking to webbing. Brown spores and webbing are clear signs that this is a member of cortinarius sp. which contains many toxic species, so please change the photo label to avoid misinforming people

This is more likely to be a Wood Blewit, Clitocybe nuda since you found it in Pennsylvania. http://en.wikipedia.org/wiki/Clitocybe_nuda