Polyporus ciliatus Fr. ex Fr. Maiporling Fringed Polypore. Cap 1–12cm across, convex and centrally depressed, often wavy and rolled under at the margin, grey-brown, rusty or tobacco brown, surface glabrous or minutely bristly, especially at the margin. Stem 20–40 x 2–7mm, usually central, often curved and thickened at the base, yellow-brown or tawny. Flesh white, leathery. Tubes 0.5–2mm long, slightly decurrent, whitish at first later pallid or tan. Pores 4–6 per mm, circular, white to cream. Spores white, subcylindric, 5–6 x 1.5–2.5um. Hyphal structure dimitic with generative and binding hyphae; generative hyphae with clamp-connections. Habitat dead wood of deciduous trees, usually on logs and fallen branches. Season early spring to summer, annual. Occasional. Not edible. Found In Europe.
Der Winter-Porling P. brumalis Pers. ex Fr., previously thought to be more common then P. ciliatus, is readily distinguished by having larger circular pores which elongate with age. Found In Europe, yet to be confirmed from America.