Pear-Shaped Puffball, Algonquin Provincial Park, Ontario, 2010

Pear-Shaped Puffball(?), Algonquin Provincial Park, Ontario, 2010

What I believe to be Lycoperdon pyriforme, another apparently-edible species, growing on a downed log.

Bear’s Head Mushroom, Algonquin Provincial Park, Ontario, 2010

Bear's Head Mushroom, Algonquin Provincial Park, Ontario, 2010

An apparently-edible species of mushroom which grows from the sides of trees in a distinctive shape.