Cap: 7-18 cm across, hemispherical when young, later convex to expanded or pulvinate, smooth surface to finely tuberculate, lubricous when moist, dull when dry, finely tomentose, gray-brown to reddish-brown, margin obtuse, at times projecting somewhat beyond the tubes.
Hymenophore: white when young, later grayish, browning somewhat when bruised, broadly adnate.
Spore print: pale brown
Spore: spindle shaped, 11,8-14,7(15,5) x 4,1-4,7(6) μm
Stem: 7-16 x 2,5-5 cm, cylindric to ventricose, somewhat tapered toward the base, with a longitudinally stretched, veinlike, grayish net on a whitish background especially in the upper part, darker and covered with dark brown scabers toward the base, base often blue- to green-spotted, flesh white when cut, turning reddish in the upper part and bluish toward the base, solid, pithy-hollow when old.
Flesh: white, turning pink when cut, later darker red and eventually blackish, thick, odor slightly fungoid, taste mild, fungoid.
Habitat: along forest edges, in groves, by poplar, grows from summer to fall.