Laetiporus sulphureus (Bull. ex Fr.) Murr. syn. Polyporus sulphureus Bull. ex Fr. Sulphur Shelf, Schwefelporling Polypore soufré, Chicken of the Woods. Bracket 10–40cm across, fan-shaped or irregularly semicircular, thick and fleshy, usually in large tiered groups; upper surface uneven, lumpy, and wrinkled, suede-like, lemon-yellow or yellow-orange drying pallid or straw-coloured; margin obtuse. Flesh at first succulent and exuding a yellowish juice when squeezed, but white and crumbly with age. Taste pleasant and slightly sourish, smell strong and fungusy. Tubes 1.5–3mm long, sulphur-yellow. Pores 1–3 per mm, circular or ovoid, sulphur-yellow. Spores white, ellipsoid to broadly ovate, 5–7 x 3.5–4.5um. Hyphal structure dimitic with generative and binding hyphae; generative hyphae without clamp-connections. Habitat deciduous trees, usually oak but common also on yew, cherry, sweet chestnut and willow. Season late spring to autumn, annual. Common. Edible when young and fresh, considered a delicacy in Germany and North America. Distribution, America and Europe. Comment there is a form of this fungus which has a white pore surface, and some authors recognize this as Laetiporus sulphureus var. semialbinus syn. Laetiporus cincinnatus. NOTE the two pictures sent in by Judy Whitton and the one from Lee Collins and Mark Anson all are probably semialbinus.