That particular sort of 'shroom is poisonous, so I'd get rid of it soon. Also, it just means that something needs to be decomposed and the 'shroom is just helping the process along some. Isn't it always the way that the decomposers are always the ugly beings in the universe??
Thanks, we got rid of it, along with all the others in our yard yesterday..even these strange ones what when you tough them, this green stuff shoots out from the top..ew..