Boletinellus merulioides (Schw.) Murr. Cap 5-15cm across, soon flattened and then depressed, margin incurved, often wavy, irregular in shape; dull yellow-brown or tan; dry, subtomentose to polished when old. Tubes decurrent, 3-5mm deep, with a radiating pattern; light yellow changing to dark olive, reddish brown when bruised. Pores large, compound, with shallower pores within pores. Stem 25-50 x 5-l0mm, often positioned off-center; concolorous with cap. Flesh pallid to yellowish, sometimes stains pale blue-green when cut. Odor mild. Taste mild. Spores ovate, smooth, 7-10 X 6-7.5µ. Deposit olive-brown. Habitat often in large numbers on moist ground under ash trees. Common. Found widespread throughout northern and eastern North America. Season June-September. Edible but not very good.