Beardless nail cup
| Beardless nail cup | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Hymenoscyphus imberbis | ||||||||||||
| ( Bull .: Fr. ) Dennis |
The beardless nail cup ( Hymenoscyphus imberbis ) is a species of fungus from the Helotiaceae family .
features
Macroscopic features
The fruit bodies are disc-shaped to flat, cup-shaped with short but distinct stalks and are 2 to 4 mm in size and with a soft, waxy consistency. Their color is always pale yellow to watery-yellowish when young, but tends to ocher with age.
Microscopic features
The spores are hyaline , smooth, unseptate, elongated to elliptical and are 9.5 to 12 × 2.5 to 4 μm in size. The asci are cylindrical-club-shaped and measure 60 to 80 × 5.5 to 7 μm. The paraphyses are filamentous and partially branched. In contrast to other species of the genus, the Ascus-Porus in Lugol hardly turns blue or purple.
The excipulum is typical of the hymenoscyphus composed of parallel, lying in acute angle to the surface hyphae constructed.
ecology
The species grows saprobion table on dead wood of deciduous trees, especially on alder and birch and is therefore to be found regularly, especially in wetlands. The nail cup can be found in spring and is not uncommon.
literature
- Ewald Gerhardt: Mushrooms . BLV Buchverlag, Munich 2006, ISBN 978-3-8354-0053-5 , p. 557
- Josef Breitenbach, Fred Kränzlin (Ed.): Mushrooms of Switzerland. Contribution to knowledge of the fungal flora in Switzerland. Volume 1: Ascomycetes (Ascomycetes). 2nd, corrected edition. Mykologia, Luzern 1984, ISBN 3-85604-011-0 , p. 192.