Warnstorfia fluitans
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Warnstorfia fluitans |
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| ( Hedw. ) Loeske |
Warnstorfia fluitans (German Flood end Moor sickle Moss ) is a moss - kind from the family Calliergonaceae .
features
The moderately vigorous plants with up to 30 centimeters long ascending or flooding, irregularly branched stems form loose, green to yellow-green or brownish lawns. The leaves are oval lanceolate to narrowly lanceolate, gradually narrowing into a long tip, straight to sickle-shaped, not wrinkled. The leaf margins are finely serrated, the simple rib, which is up to 60 micrometers wide, usually extends a little above the center of the leaf. The leaf cells are linear in the middle of the leaf, 10 to 20 times as long as they are wide, and shorter at the leaf base. Leaf-wing cells are somewhat inflated, rounded to slightly elongated and gradually merge into rounded, square and rectangular cells upwards.
The species is autocratic (antheridia and archegonia on different branches on the same plant). Spore capsules are usually rare. The seta is up to 10 centimeters long and tortuous, the curved, elongated capsule inclined to horizontal, the conical lid is bluntly pointed. The finely papillary spores are 20 to 28 micrometers in size.
Varieties
Warnstorfia fluitans is a very variable species. It is not clear whether it is just a matter of site modifications. A form with strongly sickle-shaped leaves and serrated edges is differentiated as var. Falcata .
Synonyms
Due to the systematic assignment, which has been changed several times in the past, there are a number of synonyms, the most common of which is Drepanocladus fluitans (Hedw.) Warnst.
Location claims and distribution
Warnstorfia fluitans grows in wet, moderately to strongly acidic, oligotrophic to mesotrophic locations in raised, intermediate or fens, sour spring bogs or in silting zones of oligotrophic, standing water.
In Germany, Austria and Switzerland it is scattered to moderately frequent and occurs from the plains to heights around the tree line. In addition, the species is almost cosmopolitan worldwide.
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 3: Special Part (Bryophyta: Sphagnopsida, Marchantiophyta, Anthocerotophyta). Ulmer, Stuttgart 2005, ISBN 3-8001-3278-8 .
