Blasia pusilla
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Blasia pusilla |
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| Blasia | ||||||||||||
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Blasia pusilla (German bottle moss , Blasiusmoos ) is a liverwort - species from the class Blasiopsida . It is the only species of the monotypical genus Blasia . The name goes back to Micheli , who named it in honor of the Italian Benedictine monk Blasius Biagi.
features
Blasia pusilla often forms extensive lawns. The populations are often inconsistent, and some of the plants die in winter.
The yellow-green to dark green, prostrate to ascending thallus is roughly ribbon-shaped and forked. The lobed edges give it a curled look. On the top of the thallus there are mostly conspicuous bottle-like structures that contain brood bodies , these are multicellular, elliptical and around 90 micrometers in size. In addition, larger star-shaped brood bodies are formed directly on the thallus surface. Nostoc colonies are present as symbionts in the thallus ; these can be seen as dark points in transmitted light. On the underside of the thallus there are shield-shaped scales with thorny teeth on the edge.
The thallus is multi-layered in the middle with about 10 cell layers, while the edge areas are single-celled. The thin-walled cells are about 25-30 micrometers at the edge of the thallus and elongated in the middle of the thallus. They do not contain any oil bodies .
The gender distribution is diocesan . Sporogons are rarely trained. The asexual reproduction is usually performed by propagules.
Location requirements
Suitable places of growth are wet, lime-free, nutrient-rich, loamy-clayey or sandy, light-rich to slightly shaded areas on roadsides and embankments, walls of meadow ditches, on the edges of fields, on fallow fields and the like.
distribution
Blasia pusilla is widespread in the northern hemisphere: in Europe, Asia (to Japan), Madeira , North America, Greenland . In Europe the occurrences extend to the north, in the Mediterranean area it is rare or absent.
In Germany, Austria and Switzerland it is widespread from the plains to middle mountain areas, but only occurs frequently in certain areas and is rare in many areas. It is largely absent in limestone areas, arid areas and in densely populated or intensively agricultural areas.
literature
- Jan-Peter Frahm, Wolfgang Frey, J. Döring: Moosflora . 4th edition, UTB Verlag, 2004, ISBN 3-8252-1250-5 , p. 52
- Nebel, Philippi: Die Moose Baden-Württemberg Volume 3 . 1st edition, Ulmer Verlag, 2005, ISBN 3-8001-3278-8 , pp. 140ff
- Ruprecht Düll, Barbara Düll-Wunder: Determine mosses easily and reliably . Quelle & Meyer Verlag Wiebelsheim, 2008, ISBN 978-3-494-01427-2 , p. 147
Web links
- Blasia pusilla in moose-deutschland.de