Racomitrium lanuginosum
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Racomitrium lanuginosum |
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| ( Hedw. ) Brid. |
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Racomitrium lanuginosum , German Zottiges Zackenmützenmoos or Zottige Zackenmütze , is a deciduous moss - species from the family Grimmiaceae .
features
Racomitrium lanuginosum forms light gray to gray-green, loose blankets that can often be quite lush and extensive. The ascending to upright, strong stems with numerous short side shoots are up to about 10 centimeters long. The 5 millimeter long leaves are drawn out from a lanceolate base in a long point, dry lying to upright, protruding strongly when moist or curved back. The leaf margins are rolled up at the bottom, the rib is strong and extends to the tip of the leaf. The tip of the leaf is designed as a long glass tip, this runs down far down the leaf margins, is clearly toothed on both sides and densely covered with high papillae. The lamina cells are elongated at the bottom and are rectangular and thickened with strong knots, while the edge and the tip of the leaf are short rectangular.
Spore capsules are quite rare. The seta is blackish-red and rough, the capsule ovate to ovate, the lid long and needle-shaped. The spores are smooth and 9 to 12 micrometers in size.
Distribution and location requirements
The species is distributed almost worldwide. In arctic and oceanic areas there are often stock-forming masses.
The occurrences are in areas with high levels of precipitation, the species is absent in arid areas. It grows particularly over silicate rock, rarely on lime and populates sunny to slightly shaded areas in block heaps, on rock debris, more rarely on individual rocks, and also on often wet raw humus in heaths and alpine areas Drift. The moss occurs from the plain (here only very scattered) to the high mountains; in the Ötztal Alps it was found up to an altitude of 3730 meters.
swell
- Ruprecht Düll , Barbara Düll-Wunder: Determine mosses easily and reliably. An illustrated excursion guide to the types of Germany and neighboring countries. Quelle & Meyer, Wiebelsheim 2008, ISBN 978-3-494-01427-2 .
- Jan-Peter Frahm , Wolfgang Frey : Moosflora (= UTB . 1250). 4th, revised and expanded edition. Ulmer, Stuttgart 2004, ISBN 3-8252-1250-5 .
- Martin Nebel, Georg Philippi (ed.): The mosses of Baden-Württemberg. Volume 1: General part, special part (Bryophytina I, Andreaeales to Funariales). Ulmer, Stuttgart 2000, ISBN 3-8001-3527-2 .
