Amblystegium subtle
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Amblystegium subtle |
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| ( Hedw. ) Chimp. |
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Amblystegium subtile , also known as Feiner Stumpfdeckel or Feines Kleinstumpfdeckelmoos , is a deciduous moss species from the Amblystegiaceae family . This species was also described under the synonyms Amblystegiella subtilis (Hedw.) Loeske and Platydictya subtilis (Hedw.) HACrum.
description
This type of moss is one of the finest deciduous mosses and forms tightly woven, green to yellow-green coatings that adhere to the substrate with tufted rhizoids. The very delicate creeping stems are abundantly branched. The hair-thin, ascending or spreading branches are 2 to 5 millimeters long, have loose leaves and have no paraphyllia . The leaves are dry, protruding when moist, sometimes weakly one-sided, lanceolate with a long tip, with entire margins. They have no or only a very short, indicated leaf vein.
The leaf cells in the middle of the leaf are elongated, rhombic, thick-walled and 3 to 5 times as long as they are wide. From the leaf wing up to the leaf edges there are about 3 rows of square to short rectangular cells on both sides. Perichaetial leaves are completely or slightly serrated, they have a rib reaching to the middle of the leaf.
The moss is monoecious . The yellow-red seta is 5 to 10 millimeters long, the 1.5 millimeter long spore capsule is erect or very slightly curved, ovoid-cylindrical, light brown and dryly constricted under the mouth. The conical lid is straight or pointed at an angle. Spores are papilous and 10 to 16 µm in size. Spore capsules are formed very often, spore maturity is in summer and autumn.
Location requirements
Amblystegium subtle grows primarily on base-rich bark in the lower to middle trunk area of deciduous trees in partially shaded to shady and humid places in forests, often on streams and sources. It rarely colonizes rocks. It is very sensitive to air pollution.
distribution
In addition to Europe, this subcontinental species is found in Asia and North America. In Europe it is absent in the far north and Great Britain. In Central Europe, it is rare in northern Germany, and fairly common in the southwest and southern parts of Germany and in the Alps.
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 .
