Ramalina fraxinea
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| ( L. ) Oh. |
Ramalina fraxinea is a shrub lichen that colonizes tree bark.
description
Ramalina fraxinea is a shrub lichen, i.e. it only grows in one place with the rootstock. Their largely rigid bearing sections are gray to yellow-green, flat to runny, broad band-shaped, between 2 and 25 mm wide and 2 to 20 cm long. They are often pitted to ribbed. The top and bottom are designed and colored the same. The apothecia, which are common in well-developed specimens, are marginal or flat, occur on both sides of the lobes, have a diameter of 2 to 10 mm and are pale yellow to gray-green. Sorals are absent, but small, bright pseudocyphelles are mostly present.
distribution
Ramalina fraxinea inhabits the bark of mostly free-standing, old deciduous trees (such as ash, poplar or linden). The species occurs more frequently in Central Europe only in places; because of its high sensitivity to air pollutants, it has often disappeared or only developed dwarfed, especially in deeper, densely populated areas.
literature
- Volkmar Wirth: Lichen flora . E. Ulmer, Stuttgart 1980, p. 436/37, ISBN 3-8001-2452-1
- Volkmar Wirth, Ruprecht Düll : Color Atlas of Lichen and Moss. Ulmer, Stuttgart 2000, ISBN 3-8001-3517-5 , p. 32.
