Fissure tooth moss
| Fissure tooth moss | ||||||||||||
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Comb split-tooth moss ( Fissidens dubius ) |
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| Systematics | ||||||||||||
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| Scientific name of the family | ||||||||||||
| Fissidentaceae | ||||||||||||
| Chimp. | ||||||||||||
| Scientific name of the genus | ||||||||||||
| Fissidens | ||||||||||||
| Hedw. |
The fissure tooth mosses ( Fissidens ) are a genus of deciduous mosses that form their own family Fissidentaceae . The representatives are characterized by a very peculiar leaf position and structure. The three-sided apex cell, with which all mosses grow, transforms into a double-edged one here soon after its formation. Accordingly, the leaves are strictly in two rows on the stem, in such a way that the leaf blades form a level with the stem. This gives the moss plants the appearance of small fern fronds.
The leaves themselves are made up of two leaf parts, the upper wing and the lower wing, which are folded together like a boat.
The peristome of the Fissidentaceae consists of 16 teeth, each split into two parts. Hence the mosses got their name split tooth mosses .
Among the species in the family there are many heat- and moisture-loving species, which is why the majority are found in the tropics . Few species are also found in the Arctic .
Systematics
The family Fissidentaceae is placed in the order Dicranales. It consists of a genus with around 440 species. In the past, the species were divided into several genera, including Nanobryum and Octodiceras .
Species that occur more frequently in Germany, Austria and Switzerland are:
- Hair fern-like split tooth moss ( Fissidens adianthoides )
- Fissidens bryoides
- Fissidens crassipes
- Comb split-tooth moss ( Fissidens dubius )
- Fissidens exilis
- Real spring fork ( Fissidens fontanus )
- Fissidens gracilifolius
- Fissidens pusillus
- Yew-leaved split tooth moss ( Fissidens taxifolius )
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.
Sources and web links
- Urania plant kingdom. Volume 2: mosses, ferns, naked plants Urania-Verlag, Leipzig 1992, ISBN 3-332-00495-6 .
- Jan-Peter Frahm , Wolfgang Frey : Moosflora (= UTB . 1250). Ulmer, Stuttgart 1983, ISBN 3-8001-2463-7 .
- Fissidentaceae in the Moss Flora of China .
