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Exidia crenata
Species of fungus From Wikipedia, the free encyclopedia
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Exidia crenata is a species of fungus in the family Auriculariaceae. It has the English name of amber jelly roll. Basidiocarps (fruit bodies) are gelatinous, brown to orange-brown, and turbinate (top-shaped). It typically grows on dead attached twigs and branches of broadleaved trees and is found in North America.
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Taxonomy
The species was originally described from North Carolina in 1822 by German-American mycologist Lewis David de Schweinitz as Tremella crenata. It was transferred to the genus Exidia by Fries in the same year. Exidia crenata was widely considered a synonym of the European Exidia recisa[1] until molecular research, based on cladistic analysis of DNA sequences, showed that the American species is distinct.[2]
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Description
The gelatinous fruit bodies are amber, 8–25 millimetres (3⁄8–1 inch) wide, and 4–12 mm (3⁄16–1⁄2 in) thick. They can be translucent and tend to be moist and/or glossy. The spore print is white.[3]
Similar species
Similar species include E. recisa and members of the genera Auricularia and Phaeotremella.[3]
Habitat and distribution
Exidia crenata is a wood-rotting species, typically found on dead attached twigs and branches of broadleaf trees, particularly oak.[1] It is widely distributed in eastern North America, where it can be found from September through May, thriving in winter.[3]
References
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