Biscogniauxia nummularia
Biscogniauxia nummularia | |
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Species: | B. nummularia
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Biscogniauxia nummularia | |
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Biscogniauxia nummularia is a plant pathogen in the family Xylariaceae, known as the beech tarcrust.[1] The specific epithet is derived from the Latin "nummus" meaning a coin, referring to the often rounded and coin-like encrustations.
Description
The fruit body forms a thick and shiny black crust, on beech (Fagus) bark and is found at all times of the year. It is not edible.[1] Young specimens are covered by a light brown outer layer. The spores are black to dark brown.
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Detail of the tarcrust's structure
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Beech tarcrust growth
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Encrustations on beech bark
Distribution
Biscogniauxia nummularia is a common pathogen specific for Beech trees, and has been recorded throughout Europe and Russia.[2]
Environmental impact
The decline of European beech (Fagus sylvatica) in Sicily and Calabria (Italy) has been linked to B. nummularia and experiments have suggested that this ascomycete plays a primary pathogenic role under certain environmental conditions.[3] It typically causes strip‐cankering and general wood decay.[4]
References
Notes
- ^ a b Phillips, Page 376
- ^ B. nummularia : Accessed : 2010-03-19
- ^ Forest Pathology : Accessed : 2010-03-19
- ^ "Biomed Experts : Accessed : 2010-03-19". Archived from the original on 2015-09-23. Retrieved 2010-03-19.
Sources
- Phillips, Roger (2006). Mushrooms. London : Pan MacMillan. ISBN 0-330-44237-6