This is an extremely foul smelling fungi. I found it growing in scattered groups at the base of a mature Maple tree in what apeared to be some sort of tanbark or mulch. I have walked past this tree on several occasions with not one fungi to be found. How ever today was the exception. It had been raining for several days none stop. Perhaps the rain caused them to pop up. Due to the really horrible smell I have had to keep them at arms length with a paper towel. I have a feeling it is some sort of stink horn.