Plagiomnium cuspidatum
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| ( Hedw. ) TJKop. |
Plagiomnium cuspidatum , rarely spit Kriechsternmoos or Spitzblättriges Sternmoos is a moss - kind from the family Mniaceae . A synonym of this species is Mnium cuspidatum Hedw.
features
Plagiomnium cuspidatum forms loose, yellow-green lawns with plants 2 to 4 centimeters high. The fertile shoots grow upright and have scabby leaves, the sterile shoots are arched, rooted at the tips and are apparently two-line leafed. The base of the trunks is covered with a dense, brown felt of rhizoids. The leaves are ovate, sharply pointed, up to about 4 (rarely 6) millimeters long and 2 millimeters wide, with a leaf base that runs down long and broadly on the stem. The leaf margins are lined from base to tip by 3 to 5 rows of elongated cells and covered with 1 to 2-celled sharp teeth from about the middle of the leaf upwards. The leaf vein ends just before or in the leaf tip.
The leaf cells in the middle of the leaf are roundish-hexagonal, not spotted, have clearly thickened cell corners, are not arranged in clear rows and about 19 to 29 µm long and 15 to 28 µm wide. At the base of the leaf there are a few rows with rectangular and stippled cells.
The species is hermaphroditic (synözisch), i.e. with male and female gametangia in a perichaetium. It is often fruitful. The individually standing sporogons have a 1.5 to 2.5 centimeter long seta and an oval, horizontal to nodding, 2.5 millimeter long capsule with a blunt lid. Spore ripening time is in spring.
Location preferences
The calcareous and shade-loving moss grows preferentially in forests on moist forest soil, on calcareous or base-rich rock, on tree bases, on rotten wood, also ruderally on wall crowns, in parks and patchy meadows. Frequent companion mosses are Anomodon viticulosus , Brachythecium rutabulum , Homalia trichomanoides or Hypnum cupressiforme .
distribution
In Central Europe, this species is widespread from the plains to middle mountain areas and is one of the most common representatives of the star moss family. In addition to European occurrences, there are worldwide occurrences in Asia, North and Central America as well as in Northwest Africa and Uganda.
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). 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 .
