Andreaea rupestris
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Andreaea rupestris |
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Andreaea rupestris (stone-Klaffmoos) is a moss - kind from the family Andreaeaceae . Synonyms are Andreaea petrophila Fürnr. or Andreaea papillosa Lindb. It is a diverse species that has been described using a number of varieties.
features
Andreaea rupestris forms pillow-shaped, small to medium-sized, brownish-green or brown-red to blackish lawns with plants about 1 to 2 centimeters high. The densely packed leaves have no veins, they are usually up to a millimeter long, ovate or lanceolate, short and bluntly pointed, often somewhat one-sided, dryly attached to spreading, when wet, strongly spreading to sparsely protruding.
The lamina cells have strongly thickened cell walls, are spotted and papillary on the back. In the upper part of the leaf and far down at the leaf margins they are roughly square, in the middle of the leaf and at the base of the leaf they are short to long rectangular.
The moss is monoecious. Spore capsules are often formed and spore ripening occurs in summer. The spherical capsule opens with four broad longitudinal cracks. Spores are often unevenly developed, larger green ones are 26 to more than 32 µm in size, smaller shrunken ones are brown and around 20 to 24 µm.
Occurrence
Andreaea rupestris grows on silicate rock in light to partially shaded and dry to moist locations. In Central Europe it is particularly widespread in the mountains up to the high mountains (up to 3000 meters above sea level), in the north German flatlands it is rare. The global distribution includes Europe, Asia, America, South Africa, Australia, New Zealand and the Antarctic.
literature
- 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 .
