Meripilus sumstinei

Grifola frondosa. Rock Creek Park, Washington, DC, USA

Grifola frondosa. Rock Creek Park, Washington, DC, USA

Grifola frondosa. Rock Creek Park, Washington, DC, USA

I believe this is right. It was a little faded.

I believe this is right. It was a little faded.

Growing at the base of an oak. Note the quarter for scale---the fungus is about 14 inches across.

Meripilus sumstinei. Rock Creek Park, Washington, DC, USA.

Growing in lawn over a hardwood stump or roots