A common annual bracket fungus whose underside bears tough, gill-like plates instead of pores. From above it resembles turkey tail (Trametes versicolor) or hairy bracket (T. hirsuta), with velvety, concentrically zoned caps. It causes a white rot of dead hardwood sapwood.
Inedible because of its tough, corky texture. Extracts have been studied in the laboratory for antioxidant, antimicrobial and antitumor activity.
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Habitat
Saprobic on dead hardwood logs and stumps, occasionally conifers, causing a straw-colored white rot of the sapwood. Alone or in overlapping clusters, summer and fall. Fruit bodies are annual.
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Widely distributed in Eurasia, Africa, Oceania and the Americas. Originally described from Sweden.
Characteristics
Cap: 1-10 cm, semicircular to kidney-shaped bracket, densely velvety-hairy, zoned in whitish, gray, brown and cinnamon, sometimes green with algae. Underside: gill-like plates, whitish becoming ivory, sharp and tough, not bruising. Stem: absent. Flesh: white, very tough and corky. Spore print: white. Spores: 5-6 x 1.5-2.5 um, allantoid (sausage-shaped), smooth, inamyloid.
