Radula (genus)

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Radula
Radula complanata

Radula complanata

Systematics
Department : Liverworts (Marchantiophyta)
Class : Jungermanniopsida
Subclass : Jungermanniidae
Order : Radulales
Family : Radulaceae
Genre : Radula
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:

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

  1. ^ Lars Söderström in World checklist of hornworts and liverworts (2016); https://phytokeys.pensoft.net/article/6261/

Web links

Commons : Radula  - collection of images, videos and audio files