Bjerkandera fumosa - A one-year fungus, cap-like, without a stipe. Adnate sideways, semicircular, or oblong-deflected. 20 to 50 mm wide, 30 to 120 mm long and 5 to 15 mm thick. Single fruiting bodies usually grow into roof-like aggregates, sometimes they are resupinate. Straw-yellow, pale-nut colors. Hymenophore tubular; whitish, white-gray, greyish-yellowish, brown-creamy white. After compressing, it turns brown and turns brown.

A hat with an equal or hilly surface, after felted youth, in the end naked, unrefrigerated, slightly striped and irregularly spotted. The edge is usually rounded at the beginning and quite thick, later thin, slightly darker, in some places slightly tucked up. The color of the color is young straw-yellow, pale-brown, with gray-brown age.

Monolayer tubes, 1 to 3 mm long. The same color as the flesh or slightly darker with smooth edges, finally serrated.

Pores round or elongated, sometimes bent, irregular. Small, 2 to 4 by 1 mm, 0.2 to 0.4 mm in diameter.

Flesh up to 10 mm thick, firm, meaty, leathery; wet fibrous, dry cork. Tannery of light wood with a clearly brushed texture, a layer of tubes of the same color. Just above the tube layer, a darker thin line not connected to the tubes is visible (under the magnifying glass) in mature fruiting bodies. The taste is vague, the smell is slightly aniseed.

Occurrence: In deciduous and mixed forests, gardens, parks; on a dead, rarely alive, wood of deciduous trees, especially willow, poplar, ash-like maple, rarely beech, chestnut, linden, elm; very rarely on conifers, on fir. It grows out one at a time or in disperse and with small concentrations. Throughout the year, more often from June to November. Frequent.

Value: Unaffected fungus.