Exidia crenata
{{Short description|Species of fungus}}
{{speciesbox
| image = Exidia crenata 106348162.jpg
| image_caption =
| taxon = Exidia crenata
| authority = (Schwein.) Fr. (1822)
| synonyms =
Tremella crenata Schwein. (1822)
}}
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.
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 until molecular research, based on cladistic analysis of DNA sequences, showed that the American species is distinct.
Description
The gelatinous fruit bodies are amber, {{Convert|8-25|mm|abbr=off|frac=8}} wide, and {{Convert|4-12|mm|abbr=on|frac=16}} thick. They can be translucent and tend to be moist and/or glossy. The spore print is white.{{Cite book |last=Audubon |title=Mushrooms of North America |publisher=Knopf |year=2023 |isbn=978-0-593-31998-7 |pages=110}}
= Similar species =
Similar species include E. recisa and members of the genera Auricularia and Phaeotremella.
Habitat and distribution
References
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Category:Fungi described in 1822