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.
The species was originally described from North Carolina in 1822 by German-American mycologistLewis 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]
Description
The gelatinous fruit bodies are amber, 8–25 millimetres (3⁄8–1 inch) wide, and 4–12mm (3⁄16–1⁄2in) thick. They can be translucent and tend to be moist and/or glossy. The spore print is white.[3]
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
1 2 Coker WC (1920). "Notes on the lower basidiomycetes of North Carolina". Journal of the Elisha Mitchell Scientific Society. 35: 113–182.
↑ Wu F, Zhao Q, Yang ZL, Ye SY, Rivoire B, Dai YC (2020). "Exidia yadongensis, a new edible species from East Asia". Mycosystema. 39: 1203–1214. doi:10.13346/j.mycosystema.200205.
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