Biscogniauxia nummularia
Beech - bark fungus ball ( Biscogniauxia nummularia )
The beeches or coins shaped beef ball mushroom ( Biscogniauxia nummularia ), also known as penny - carbon crust, is a holzbewohnender fungus on beech of the family of wooden club relatives.
- 3.1 Literature
- 3.2 Notes and references
Features
Macroscopic characteristics
The beech bark - ball fungus forms an extensive flat, black kale-like stroma exclusively on dead beech trees. You can both be rounded with 5-20 mm diameter and irregularly ellipsoid with 15-50 ( -120 ) mm long, 10-22 (-60 ) mm wide with an average thickness of 0.6-0.8 mm. The tissue below the perithecia is unimpressive. The perithecia themselves are hemispherical 0.4-0.6 mm wide and 0.5-0.7 mm high.
Microscopic characteristics
The short- stalked asci have an amyloid Apikalring. The ascospores are dark brown to black, elliptical and measure 10-13 x 7.5-8.5 microns.
Distribution and ecology
The beech - bark fungus ball arrives in Europe by France and Germany to Russia and the Caucasus saprobiontisch ago on beech. Although the penny - carbon crust is generally described as Saprobiont on beech, was observed in southern Italy, that they may also occur as a pathogen of beech.