Radula (genus)
Radula | ||||||||||||
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Systematics | ||||||||||||
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Scientific name of the order | ||||||||||||
Radulales | ||||||||||||
Stotler & Crand.-Stotl. | ||||||||||||
Scientific name of the family | ||||||||||||
Radulaceae | ||||||||||||
Garbage. Frib. | ||||||||||||
Scientific name of the genus | ||||||||||||
Radula | ||||||||||||
Dumort. |
Radula (German Kratzmoose ) is a species-rich genus of leafy liverworts .
features
They are mostly strong, prostrate plants with overshot foliage (that means: on the lateral leaves, when viewed from above, the front edge of the leaf covers the rear edge of the following leaf). The leaves are bilobed, with an egg-shaped to circular upper lobe and a smaller lower lobe connected to this keel-like. Lower leaves are missing. The lamina cells usually contain a very large body of oil. The gender distribution is predominantly diocese . The female gametangia stands are at the stem end or at the branch ends. The perianth is flattened, the mouth mostly entire. Often brood bodies are formed on the leaf margins , which serve for vegetative reproduction.
Systematics
Radula is the only genus of their family Radulaceae . According to Frey, Fischer & Stech, the Radulaceae family is assigned to the equally monotypical order Radulales .
According to a recent publication, the Radulaceae family is placed in the order Porellales .
species
The approximately 200 species worldwide (150 to 245 are given depending on the source) are predominantly found in tropical and subtropical areas. There are 9 of them in Europe and three types in Germany, Austria and Switzerland:
- Radula complanata Common or flat-leaved scratch moss
- Radula lindenbergiana Lindenberg-Kratzmoos
- Radula visianica
swell
- Nebel, Philippi: Die Moose Baden-Württemberg Volume 3 . 1st edition, Ulmer Verlag, 2005, ISBN 3-8001-3278-8 , p. 405
- Wolfgang Frey, Eberhard Fischer, Michael Stech: Bryophytes and seedless Vascular Plants . In: Wolfgang Frey (Ed.): Syllabus of Plant Families - A. Engler's Syllabus of Plant Families . 13th edition. Vol. 3, Borntraeger, Berlin / Stuttgart 2009, ISBN 978-3-443-01063-8 , p. 90
- Heribert Köckinger: The horns and liverworts of Austria (Anthocerotophyta and Marchantiophyta), Catalogus Florae Austriae, Part II, Book 2; Publishing house of the Austrian Academy of Sciences. ISBN 978-3-7001-8153-8 , pp. 273ff
Individual evidence
- ^ Lars Söderström in World checklist of hornworts and liverworts (2016); https://phytokeys.pensoft.net/article/6261/