Polycauliona polycarpa
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Polycauliona polycarpa |
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| ( Hoffm. ) Frödén , Arup & Søchting |
Polycauliona polycarpa (syn. Xanthoria polycarpa ) is a species of leaf lichen thatis widespread in Central Europe andcolonizes tree bark.
description
Polycauliona polycarpa forms small, curved cushions with a bearing diameter of up to 2 cm. The thallus is yellow to gray-yellow in color and is usually so densely populated with (sometimes somewhat stalked) apothecia that the bearing lobes (up to 0.5 mm wide) are hardly visible (the Xanthoria parietina , which is also common, is significantly larger with wider lobes which are not covered by apothecaries, at least at the edge). The apothecia have a diameter of up to 2 mm and an orange disc (darker than the camp) with a lighter edge.
distribution
Lichen prefers to colonize thinner branches or forks of branches of shrubs and deciduous trees with nutrient-rich bark (e.g. sloe, hawthorn, ash, poplar, elder, willow). It is common in Europe, apart from the extreme north, and rare in the Mediterranean.
literature
- Volkmar Wirth: Lichen flora . E. Ulmer, Stuttgart 1980, pp. 527/528, ISBN 3-8001-2452-1
- Volkmar Wirth, Ruprecht Düll : Color Atlas of Lichen and Moss. Ulmer, Stuttgart 2000, ISBN 3-8001-3517-5 , p. 91.
Web links
- Entry Index Fungorum
- Pictures and brief description (U. Kirschbaum) ( Memento from April 1, 2012 in the Internet Archive )
- Image and brief description