Squamarina gypsacea
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Squamarina gypsacea , Eisenerzer Alps, Styria |
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| ( Sm. ) Poelt |
Squamarina gypsacea is a type of crusty lichen . Thisspecies, which occursfrequentlyon limein the Alps , is characterized by olive, white-edged scales and relatively large, light-brown, only indistinctly edged apothecaries .
features
Squamarina gypsacea is morphologically quite variable. The camp is thickly scaly and lobed at the edges. The 2–5 mm large and 1 mm thick scales are whitish green to olive ocher with a distinctive white border. The apothecia reach a diameter of 10 millimeters, are concave or flat and often only indistinctly bordered. The disc is yellow-brown. The unicellular spores are between 11.5–18.5 × 5–7 µm in size. The pulp reacts yellowish with phenylenediamine . There is no reaction with KOH (K) and calcium hypochlorite (C). The lichen store contains psoromic acid and isousnic acid .
Ecology and diffusion
Squamarina gypsacea is a Mediterranean-Alpine lichen that occurs mainly in crevices on limestone. It is very common and widespread in the limestone Alps above the tree line up to the nival level (in the Wetterstein Mountains up to 2900 m). It is just as common in the Kalktatra and the Balkans. In the Mediterranean region, it is limited to shady crevices in the rock. The lichen is very rare north of the Alps and Carpathians .
Systematics and Etymology
Squamarina gypsacea is the type species of the genus Squamarina , which was separated from the genus Lecanora in 1958 by Josef Poelt . The Latin word squama means scale, gypsaceus means plaster-like. The systematic position of the genus Squamarina is not completely clear, it is placed on the one hand to the Stereocaulaceae , some authors on the other hand place it to the Ramalinaceae .
The lichen Squamarina gypsacea was described as Lichen gypsaceus by the English botanist JE Smith as early as 1791 .
swell
- ^ J. Poelt and U. Krüger: The distribution of the lichen genus Squamarina in Europe. Feddes Repertorium Volume 81, 1970, pages 187-301.
- ↑ I. Pisut: About the variability and distribution of lichen Squamarina gypsacea Poelt in the Apuseni Mountains (Sm.). Annotations Zool. & Bot. [Bratislava] Vol. 26, 1966, pp. 1-4.
- ↑ PM Kirk, PF Cannon, DW Minter and JA Stalpers: Dictionary of Fungi , 10th ed., CABI, Wallingford, 2008. ISBN 9780851998268 .
- ↑ Stefan Ekman, Heidi L. Andersen, and Mats Wedin. 2008: The limitations of ancestral state reconstruction and the evolution of the ascus in the Lecanorales (lichenized Ascomycota). Systematic Biology 57 (1): pp. 141-156.
- ^ JE Smith. Trans. Linn. Soc. London Volume 1: 81 (1791).
literature
- V. Wirth: Lichen flora, 2nd edition . Ulmer, Stuttgart, 1995, ISBN 3-8252-1062-6
