Armillaria mellea,

The honeylike color of this white-spored gilled mushroom inspired its common name. This mushroom is very abundant. Variable in appearance, returning each year in many shapes and colors, what we call Armillaria mellea, (also known as the "oak mushroom"), may represent more than one species of mushroom. The caps can be red-brown to tan, smooth or scaled, with tan or pale brown fibrils. They may be small, rounded, and bell-like, or flat and fully expanded. They appear as individuals or in troops of hundreds. They are enjoyed worldwide.