Melanohalea exasperatula
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Melanohalea (syn.Melanelia) exasperatula |
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| ( Nyl. ) O. Blanco , A. Crespo , Divakar , Essl. , D. Hawksw. & Lumbsch |
Melanohalea exasperatula (synonyms: Melanelia exasperatula , Parmelia exasperatula ( Basionym )) is a leaf lichen from the family of Parmeliaceae that iscommon in Central Europe andgrows on tree bark.
description
The thallus is brown to olive-brown on the top (moist olive-green), but clearly lighter on the underside (beige to pink-brown). The diameter of the rosette bed of this comparatively small leaf lichen reaches a maximum of 4 cm. Characteristic are the sometimes densely packed, shiny isidia , which are thickened or flattened in the shape of a club at the ends. Apothecia are rare (then brown).
distribution
The species is found from the Boreal Zone to the Mediterranean . It thrives mainly on the bark of free-standing deciduous trees or conifers (also on branches of the crown region), often also on fruit trees.
literature
- Volkmar Wirth: Lichen flora . E. Ulmer, Stuttgart 1980, p. 371ff., ISBN 3-8001-2452-1
- Volkmar Wirth, Ruprecht Düll : Color Atlas of Lichen and Moss. Ulmer, Stuttgart 2000, ISBN 3-8001-3517-5 , p. 75.