Coriolus versicolor (L. ex Fr.) Quél. syn. Trametes versicolor (L. ex Fr.) Pilát. Turkey Tail, Schmetterlingsporling Polypore versicolore, Manyzoned Polypore. Bracket 4–10cm across, 3–5cm wide, 0.1–0.3cm thick, leathery, usually forming large overlapping tiered groups; upper surface velvety becoming smooth with age, colour very variable, concentrically zoned black-green, grey-blue, grey-brown or ochraceous-rust, with a white to cream margin. Flesh tough and leathery, white. Taste and smell not distinctive. Tubes 0.5–1mm long, white drying yellowish. Pores 3–5 per mm, circular or irregularly angular, white, yellowish or light brown. Spores straw-yellow, ellipsoid, 5.5–6´1.5–2m. Hyphal structure trimitic. Habitat on deciduous wood. Season all year. Very common. Not edible.
This is a very variable species and some authors recognize several forms. Distribution, America and Europe.