Trichostomum crispulum
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Trichostomum crispulum |
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Trichostomum crispulum even Frizzy hair mouth Moss called, is a Laubmoosart from the family pottiaceae .
features
Trichostomum crispulum forms loose to dense, yellow-green to brownish-green lawns . The individual plants are 0.5 to 3 centimeters high and forked. The leaves are larger and more dense in the upper part of the shoot than below. They are lanceolate for a broader base, with gullies at the top with more or less inflected leaf margins, quickly narrowed into the often hood-shaped leaf tip and have a leaf vein emerging as a short tip. When dry, the leaves are curly, when wet, they are upright to bulky.
The trunk cross-section shows a clear central strand. In the upper part of the leaf, the lamina cells are roundish-square, densely papillae and 6 to 11 µm in size; at the base of the leaf they are rectangular, smooth and hyaline to yellowish.
The diocesan moss rarely forms sporophytes . The seta is about 0.7 to 1.5 centimeters long and reddish, the upright spore capsule is ovate to cylindrical and has reddish, thread-like and upright to slightly twisted peristome teeth and a beaked lid. The red-brown spores are papilose and about 12 to 20 µm in size.
variability
The species Trichostomum crispulum is very rich in shape. Of several forms described, Trichostomum crispulum var. Viridulum (Bruch) Dixon should be mentioned in particular , this is sometimes separated as a separate species ( Trichostomum viridulum Bruch ). These are plants only a few millimeters in size with narrower and long, pointed leaves.
Distribution and location requirements
The distribution of Trichostomum crispulum extends over large parts of the northern hemisphere to tropical Africa . In Central Europe it occurs mainly in the limestone mountains. In the Alps it rises to the alpine altitude level .
It usually grows on fresh to moist and shady rocks, on limestone-rich, skeletal soils , on loess or on sand and gravel surfaces on river or stream banks.
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 1: General part, special part (Bryophytina I, Andreaeales to Funariales). Ulmer, Stuttgart 2000, ISBN 3-8001-3527-2 .
