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Trametes versicolor
Species of mushroom From Wikipedia, the free encyclopedia
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Trametes versicolor – also known as Coriolus versicolor and Polyporus versicolor – is a common polypore mushroom found throughout the world. Owing to its shape being similar to that of a wild turkey's tail feathers, T. versicolor is most commonly referred to as turkey tail.[1]
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Although polysaccharide-K, an extract of T. versicolor, is approved in Japan as an adjuvant therapy in cancer treatment,[2] it is not approved in the United States for treatment of cancer or any clinical condition.[3] Extracts of turkey tail or the mushroom itself are commonly marketed as a dietary supplement for various health benefits, but there is no good scientific evidence for safety or effectiveness, and quality can vary due to inconsistent processing and labeling.[4]
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Etymology
Meaning 'of several colors', versicolor accurately describes this fungus that displays a unique blend of markings.
Description
The fruiting body is somewhat tongue-shaped, with no discernable stalk, and the tough flesh is 1–3 millimetres (1⁄16–1⁄8 in) thick. The cap is flat, up to 10 centimetres (4 in) across.[5] It is often triangular or round, with zones of fine hairs coloured rust-brown or darker brown, sometimes with black zones.[5] Underneath a layer of tomentum is a black layer, topping the whitish flesh.[6] Older specimens can have zones with green algae growing on them.[5]
The bottom surface of the cap shows typical concentric zones of different colors, with the margin always the lightest.[7] There are 3–5 pores per mm. They are whitish to light brown,[5] with pores round and with age twisted and labyrinthine.
Similar species
One similar-looking mushroom is Stereum ostrea (false turkey tail).[7]
Other similar species include Trametes betulina,[7] T. hirsuta,[8] T. ochracea,[6] T. suaveolens, Bjerkandera adusta,[8] Cerrena unicolor,[6] Lenzites betulina, and Stereum hirsutum.[8] Other species of Stereum are similar, typically with a smooth undersurface, as well as some species of Trichaptum.[6]
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Ecology
T. versicolor commonly grows in tiled layers in groups or rows on logs and stumps of deciduous trees.[7] It is a white rot fungus which degrades lignin from lignocellulosic materials, such as wood.[9]
The species may be eaten by caterpillars of the fungus moth Nemaxera betulinella, maggots of the Platypezid fly Polyporivora picta,[10] and the fungus gnat Mycetophila luctuosa.[11]
Uses
Trametes versicolor is considered too tough to eat,[5] but can be prepared in many ways, such as teas and powders. It has been most notably consumed in China for thousands of years under the name "Yunzhi" (Chinese: 云芝).[8][12][13][14]
The species may be used in traditional Chinese medicine or other herbalism practices.[3][15]
Although polysaccharide-K is approved in Japan as an adjuvant therapy in cancer treatment,[2] neither the extract nor the mushroom preparation is approved or used in the United States for any clinical condition.[3]
It is commonly marketed as a dietary supplement for various health benefits but lacks sufficient scientific evidence for safety or effectiveness, and quality can vary due to inconsistent processing and labeling.[2][4]
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Gallery
Траметес разноцветный
T. versicolor covering a stump
Close up of T. versicolor.
Color variation of T. versicolor on the same tree stump
Pale specimens
Brown variety
Pale and brown varieties side by side
Brown variety in higher magnification
T. versicolor, pale variety
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See also
References
External links
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