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Hymenoscyphus albidus
Scientific classification
Domain:	Eukaryota
Kingdom:	Fungi
Division:	Ascomycota
Class:	Leotiomycetes
Order:	Helotiales
Family:	Helotiaceae
Genus:	Hymenoscyphus
Species:	H. albidus
Binomial name
Hymenoscyphus albidus (Roberge ex Desm.) W. Phillips

Hymenoscyphus albidus is a saprotrophic fungus which grows on the dead leaves of ash trees.

Hymenoscyphus albidus has been known from Europe since 1851 and is not regarded as pathogenic. It is distinct from, but closely resembles, the pathogenic fungus Hymenoscyphus fraxineus (formerly known as Hymenoscyphus pseudoalbidus). Although Hymenoscyphus albidus is "morphologically virtually identical" to Hymenoscyphus fraxineus, there are substantial genetic differences between the two species.

References

1. Gross, A.; Grünig, C. R.; Queloz, V.; Holdenrieder, O. (2012). "A molecular toolkit for population genetic investigations of the ash dieback pathogen Hymenoscyphus pseudoalbidus". Forest Pathology. 42 (3): 252. doi:10.1111/j.1439-0329.2011.00751.x.
2. Brian Spooner; Peter Roberts (1 April 2005). Fungi. Collins. p. 246. ISBN 978-0-00-220152-0. Retrieved 31 October 2012.
3. "Hymenoscyphus pseudoalbidus". ETH - Forest Pathology and Dendrology. 14 April 2010. Archived from the original on 5 November 2012. Retrieved 31 October 2012.
4. Bengtsson, S. B. K.; Vasaitis, R.; Kirisits, T.; Solheim, H.; Stenlida, J. (2012). "Population structure of Hymenoscyphus pseudoalbidus and its genetic relationship to Hymenoscyphus albidus". Fungal Ecology. 5 (2): 147–153. doi:10.1016/j.funeco.2011.10.004.

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