Cap: 8-15 cm across, hemispherical when young, later convex pulvinate, surface somewhat lubricous when moist, tomentose when dry, dull, orange yellow to orange fox, margin membranous and projecting beyond the tubes, especially when young.
Hymenophore: whitish, when young, later grayish, notched at the stem.
Spore print: brown
Spore: fusiform, (10,6)11,5-16,5(16,8) x (3,5)4-4,7(5,2) μm
Stem: 10-15 x 3-5 cm, ventricose when young, later cylindric clavate, surface with small black scabers on a white background, surface and flesh discoloring blue when bruised or cut, flesh firm, longitudinally fibrous, dingy-white, solid.
Flesh: white, turning bluish when cut, thick, firm, odor faint, not distinctive, taste mild, pleasant.
Habitat: under birches, grows from summer to fall.
Remarks: similar with Leccinum aurantiacum, which is bigger, has darker orange or brick red cup, stem is covered with white scabers, which turns brownish.