Armillariella mellea

Common Name: Honey Fungus
Description: Cap 3-15 cm across, very variable, convex then flattened and centrally depressed or wavy; ochre, tawny to dark brown, often with an olivaceous tinge; covered in dark hairy scales, especially at the center. Stem 60-150 by 5-15 mm high and wide.
Habitat: in small or large clusters at the bases of trees or near stumps. Common. Found throughout North America.
Edible: yes, but must be cooked.

Source: Mushrooms of North America by Roger Phillips.