Rotary tooth moss
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The rotary tooth moss ( Tortula ) form a genus of acrocarp deciduous moss in the family Pottiaceae .
features
The plants often form light green, occasionally black-green, inside yellow-brown to dark brown cushions. The upright stems are usually a few millimeters to 2 centimeters high, the leaves lanceolate, ovate, obovate to spatulate. The leaf vein often emerges as a long, smooth glass hair or as a shorter tip, occasionally it ends in the leaf tip. The leaf margins are often bent back at the bottom, usually with entire margins or weakly serrate at the tip of the leaf.
The basal lamina cells are rectangular, translucent ( hyaline ) and thin-walled. In the upper leaf area they are rounded, square to hexagonal, occasionally diamond-shaped, relatively large with about 15 to 19 micrometers and often papilose . The transition from the lower to the upper lamina cells is fluid and not sharply defined.
The sporophytes are quite diverse. The seta can be very short or up to 2.5 centimeters long, the capsule is egg-shaped to cylindrical, with a long thread-shaped to short peristome or completely without a peristome and a conical, occasionally short-beaked lid. In some species there is no capsule lid ( celistocarp ), the spores are only released when the capsule disintegrates.
Systematics
The delimitation of the genus Tortula is difficult and has been subject to major changes in the past. According to the Frey / Fischer / Stech system, the earlier genera Desmatodon , Phascum and Pottia are largely incorporated into Tortula , on the other hand a number of previous Tortula species are separated and placed in the genera Hennediella , Microbryum and Syntrichia . This rearrangement was largely due to gametophyte characteristics.
species
The rotary tooth mosses ( Tortula ) include around 195 species worldwide.
Species found in Germany, Austria and Switzerland are:
- Tortula acaulon ( Syn .: Phascum cuspidatum )
- Tortula atrovirens
- Tortula brevissima
- Tortula canescens
- Tortula cernua (Syn .: Desmatodon cernuus )
- Tortula cuneifolia
- Tortula guepinii
- Tortula hoppeana (Syn .: Desmatodon latifolius )
- Tortula inermis
- Tortula lanceola (Syn .: Pottia lanceolata )
- Tortula laureri (Syn .: Desmatodon laureri )
- Tortula leucostoma (Syn .: Desmatodon leucostoma )
- Tortula lingulata
- Tortula marginata
- Tortula modica (Syn .: Pottia intermedia )
- Tortula mucronifolia
- Tortula muralis , the very common wall-toothed moss
- Tortula obtusifolia
- Tortula protobryoides (Syn .: Pottia bryoides )
- Tortula revolvens
- Tortula rhodonia
- Tortula schimperi
- Tortula subulata
- Tortula systylia (Syn .: Desmatodon systylius )
- Tortula truncata (Syn .: Pottia truncata )
- Tortula vahliana
swell
- Jan-Peter Frahm , Wolfgang Frey : Moosflora (= UTB . 1250). 4th, revised and expanded edition. Ulmer, Stuttgart 2004, ISBN 3-8252-1250-5 .
- 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 , pp. 182, 183.
- 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 .
- Tortula in Flora of North America .
