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BIODIVERSITY REFERENCE
 
   Onygena equina (Willd.) Pers.   


Kingdom: Fungi
Phylum: Ascomycota
Class: Eurotiomycetes
Order: Onygenales

British distribution: Widespread but uncommon.
World distribution: Europe, ?elsewhere.


Onygena equina on horns of old sheep's skull


O. equina is a keratinophilic species that is sometimes found on old cast horns and on rotting hooves, as here on this manky old sheep's skull. The fruiting body consists of a more or less globose fertile head on a cylindrical stalk and can be regarded as a cleistothecium. The asci develop internally amongst a weft of hyphae rather than in an organised hymenium. The head then breaks open to release the ascospores.

While it is not known to pose any definite threat, its use of keratin may mean that it could plausibly infect fingernails. It is sensible to handle this fungus with caution.


Onygena equina, close-up


 
Photographed material: Kindrogan, Perthshire, 1985.

One other Onygena species occurs in Britain: O. corvina, a smaller species on old feathers, owl pellets and similar material.



© A.J. Silverside
Page first hosted at www-biol.paisley.ac.uk/bioref/, March 1999; transferred to lastdragon.org with minor edits, February 2010
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