Graphis scripta
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Graphis scripta (L.) Arch. |
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| Graphis scripta | ||||||||||||
| ( L. ) Oh. |
The Graphis scripta (L.) Arch. ( Schriftflechte ) is a crusts braid whose elongated, curved and branched fruit bodies ( Hysterothecium remember) to characters.
features
Macroscopic features
The thallus is white or gray, which can be smooth or cracked. The hysterothecia are very variable and can be simple to branched or networked in a star shape. They have a black, narrow or relatively wide disc, which can be frosted white.
Microscopic features
The spores are hyaline , 1-15 septate , 25–70 × 6–10 µm. With iodine-potassium iodide solution , the spores turn blue-violet (J +).
Spot reaction
No.
Lichen Ingredients
No.
discussion
Graphis scripta can be very rich in forms. Numerous modifications have been described as a species. Then one should still be able to distinguish between Graphis betulina , Graphis macrocarpa , Graphis pulverulenta . This has yet to be confirmed by molecular phylogenetic studies.
Location
It occurs up to the tree line on the smooth bark of deciduous trees (especially beech, hornbeam, ash, hazel), less often on fir. It prefers shady, humid locations on areas that have been rained or humidified by trunk runoff water. It is still one of the most common species in southern Germany, but has already become partially rare in the north.
Individual evidence
- ↑ Gerhard Neuwirth & André Aptroot: Herzogia 24 (2): Recognition of four morphologically distinct species in the Graphis scripta complex in Europe , pp. 207–230, Bryological-lichenologische Arbeitsgemeinschaft für Mitteleuropa e. V., 2011, ISSN 0018-0971 .
literature
- Volkmar Wirth, Markus Hauk & Matthias Schultz: Die Lichen Deutschlands Volume 1 , p. 498 (4), p. 499, Eugen Ulmer KG, 2013, ISBN 978-3-8001-5903-1
- Mike Guwak: Graphis scripta (L.) Oh. - Microscopy, Volume 2, No. 3, ISSN 2197-4543 (Print), ISSN 2197-4551 (Internet)
Web links
- Description at flechtenmikoskopie.de (PDF; 212 kB)