Common Brown Cup
Peziza badio-confusa or more
correctly
Peziza phyllogena according to Bill Neill and Karen Hansen of Farlow Herbarium
Here is a picture of the
largest one I found. It is 5" in diameter. Cobwebs show up in
picture.
Here is a side view of the one above.
Sun shining through it. It is shown growing out of a rotten piece of wood
that was underground.
Here is a younger specimen
that has the cup shape. About 2.5" diameter.
Here is a group of them.
The largest about 2" diameter.