Real swelling fork tooth
| Real swelling fork tooth | ||||||||||||
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| Fissidens fontanus | ||||||||||||
| ( Bach.Pyl. ) Steud. |
The real spring fork ( Fissidens fontanus ) is an underwater species of deciduous moss from the Fissidentaceae family .
description
The species grows in loose lawns and the up to 3 cm long stems have the fern-frond-like, two-line foliage typical of Fissidens species. The leaflets can be up to 5 mm long.
Location claims and distribution
Fissidens fontanus is a water moss and grows in constantly flooded or very wet areas in large rivers, lakes, canals, wells and on weirs. Different substrates made of stone, wood or metal are colonized. It is often found on rocks, block packs, walls, tree roots, wooden and metal posts. It is widespread on the major rivers of Central Germany to the south of the Danube and the canals of the north and is common in places. The species is absent from small streams and in the mountains. Individual finds are on the shores of Lake Constance and Chiemsee , where it populates, among other things, the wooden planks of the boat houses.
Hazard and protection
Contrary to the information in older literature, the number of known sites has increased significantly. Only the earlier occurrences in well troughs have almost completely disappeared due to renovation. The species is not particularly rare at lakes, large rivers and canals and also tolerates heavy pollution of the water. Since the moss can only be found at very low water levels and the large river systems are increasingly exposed to long periods of low water, one can probably assume that the species was potentially under-mapped in the past. Fissidens fontanus is currently not endangered in Germany.
cultivation
The moss is cultivated as a popular aquarium plant due to its attractiveness and low demands .
Systematics
The species was placed in its own genus Octodiceras in the past .
literature
- Jan-Peter Frahm , Wolfgang Frey : Moosflora (= UTB . 1250). 4th, revised and expanded edition. Ulmer, Stuttgart 2004, ISBN 3-8252-1250-5 , p. 106.
- 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
Individual evidence
- ↑ Wolfgang Frey, Michael Stech, Eberhard Fischer: Bryophytes and Seedless Vascular Plants (= Syllabus of Plant Families. 3). 13th edition. Borntraeger, Berlin et al. 2009, ISBN 978-3-443-01063-8 , p. 172 f.