Boletus inedulis Murr. Cap 4-10cm across, convex to flattened; pale, whitish at first, then buff to tan; dry, subtomentose when young, often conspicuously areolate when old. Tubes pale greenish yellow, turning blue when cut. Pores small (1.5-2 per mm); pale yellow, blue on bruising. Stem 60-100 x 10-25mm, equal; yellow overall with a pink flush over base; surface reticulate over upper half, very fine and often almost smooth. Flesh firm; yellowish then pale blue when cut. Odor pleasant. Taste bitter. Spores subfusiform, 9-12 x 3.3-4.5µ. Deposit olive-brown. Habitat in oak and hickory woods. Found in northeastern North America, west to Michigan and south to New York. Season July-September. Not edible. Comment It is often mistaken for Boletus calopus), from which it differs in its slender stature, finer reticulum, and small spores.