Smooth-fruited golden hair moss
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Smooth-fruited golden hair moss ( Orthotrichum striatum ) |
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The smooth-fruited golden hair moss ( Orthotrichum striatum ) is a deciduous moss species from the Orthotrichaceae family . It was also known under the synonym Orthotrichum leiocarpum Bruch & Schimp. described.
features
Shoots and leaves
This moss, which usually only grows on trees, forms loose cushions with its strong plants that are 0.5 to 4.5 centimeters high. The stems are forked or tufted. The leaves are pointed lanceolate from the egg-shaped base, have rolled-up leaf margins, are often somewhat serrated at the tip of the leaf and have a rib that extends to the tip of the leaf.
Leaf cells
Leaf cells have simple papillae, are rounded-oval in the upper part of the leaf, about 10 to 12 µm in size. The cells of the leaf base are long, rectangular to linear with cupped cell edges next to the leaf vein, towards the edges they are shorter and more square.
Sporophyte
The egg-shaped to elongated, thin-skinned, yellowish spore capsule is sunk into the leaves and not streaked even when dry. It has phaneropore (not recessed) stomata at the base. The short seta is up to 0.6 millimeters long. The double peristome consists of the 16 outer linear-lanceolate single teeth, which are densely papilose and curved back when dry, as well as the 16 inner, yellowish and papillary eyelashes. The wide-bellied, yellowish kalyptra has sparsely short hairs. Spores are heavily papillary and 18 to 28 µm in size. Spore ripening is around May. The moss is monoecious .
Ecology, distribution and endangerment
The moss is an epiphyte and grows on the bark of field and forest trees, only rarely on rocks. In Europe it is sometimes common and occurs from the lowlands to the tree line. However, the species is sensitive to air pollution, so that stocks are declining and the size of the plants has also decreased compared to earlier. In Germany, the species is classified as endangered and threatened with extinction in many federal states. Outside of Europe there are deposits in Pakistan, Kashmir, northeast China; furthermore in North Africa, on the Canary Islands and in north-western North America.
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 .
