Hylocomiastrum umbratum
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Hylocomiastrum umbratum |
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| ( Hedw. ) M. meat. |
Hylocomiastrum umbratum (Synonym Hylocomium umbratum (Hedw.) Schimp.) Is a pleurocarpes deciduous moss from the family Hylocomiaceae .
features
Hylocomiastrum umbratum forms brown-green to dark green, dull or slightly shiny, loose lawns. The sturdy stems are up to 15 centimeters long, they are irregularly double-pinnate with slightly distant, round and pointed branches. Stems and branches are covered with numerous antler-like branched paraphyllia between the leaves . The upright stem leaves are up to 2.5 millimeters long, sharply pointed for a broad, egg-shaped base, heavily longitudinally wrinkled and irregularly, roughly serrated along the entire edge. The double rib extends to the middle of the leaf. Branch leaves are smaller and ovate to a point. Their leaf veins extend over the middle of the leaf and are usually unevenly forked, with their ends emerging as thorns on the underside of the leaf.
Leaf cells are linear and thin-walled above the base of the leaf, shorter, thick-walled and spotted at the base of the leaf. Leaf-wing cells are not particularly differentiated.
The species is diocesan . Spore capsules are seldom formed. The seta is about 2 centimeters long, the capsule is thickly ovate, horizontally to nodding, with a conical, pointed lid.
Distribution and location requirements
Hylocomiastrum umbratum is widespread in the northern hemisphere, with a focus on the boreal zone. It occurs in Europe, Asia, North America and North Africa.
In Central Europe it occurs scattered at altitudes of 500 to over 2000 meters in the Alps and the higher low mountain ranges. It grows in moderately fresh, lime-poor, acidic places, especially on humus over silicate rock in moist log heaps and mountain forests.
literature
- 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). With 108 illustrations by J. Döring. 4th, revised and expanded edition. Ulmer, Stuttgart 2004, ISBN 3-8252-1250-5 .
- Wolfgang Frey, Michael Stech, Eberhard Fischer: Bryophytes and Seedless Vascular Plants (= Syllabus of Plant Families. 3). 13th edition. Borntraeger, Berlin et al. 2009, ISBN 978-3-443-01063-8 .
- 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 .
