Pseudoleskeella nervosa
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Pseudoleskeella nervosa |
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| ( Brid. ) Nyholm |
Pseudoleskeella nervosa ( tree chain moss ) is a deciduous moss species from the family Pseudoleskeellaceae . Synonyms include Leskea nervosa (Brid.) Myrin or Leskeella nervosa (Brid.) Loeske.
features
Pseudoleskeella nervosa , with its finely branched plants, forms moderately dense, dark green, interwoven, dull lawns. The creeping stems that adhere to the substrate with rhizoids are up to 8 centimeters long and have irregular to feathery branches. On the upright branches there are often tufts of brood branches and brood buds, the moss then shows a resemblance to Platygyrium repens .
The leaves are suddenly to gradually pointed from a broad base, up to 15 millimeters long, entire and have a strong rib reaching to the tip of the leaf. They are arranged fairly close together, moist and dry, loosely fitting, but the leaf tips protruding or bent back. The leaf cells are oval to rounded rectangular in the middle of the leaf and about twice as long as wide, square on the leaf edges and square to transversely rectangular in the leaf wings.
The spore capsule on the seta , which is about 1 centimeter long, is cylindrical, slightly curved and upright, not narrowed under the mouth. The lid is beaked crooked, the hood extends to the bottom of the capsule. The finely papillary spores are 12 to 16 micrometers in size. Obviously, the species rarely produces fruit.
Location claims and distribution
The base-loving species grows mainly in montane forests on hardwood bark in the lower to middle trunk area, more rarely on calcareous rock. Forest edges or light spots in forests are preferred. It is very sensitive to air pollutants.
Pseudoleskeella nervosa is common in the northern hemisphere. In Germany, Austria and Switzerland it is quite common in the Alps, scattered in the low mountain ranges and rare on the plains.
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 2: Special part, (Bryophytina II, Schistostegales to Hypnobryales). Ulmer, Stuttgart 2001, ISBN 3-8001-3530-2 .
