Shore Horsetail

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Shore Horsetail
Equisetum × litorale drawing.png

Shore horsetail ( Equisetum × litorale )

Systematics
Ferns
Class : Equisetopsida
Order : Horsetail (Equisetales)
Family : Horsetail Family (Equisetaceae)
Genre : Horsetail ( Equisetum )
Type : Shore Horsetail
Scientific name
Equisetum × litorale
Coolw. ex Rupr .

The shore horsetail ( Equisetum × litorale ) is a hybrid of field horsetail ( Equisetum arvense ) and pond horsetail ( Equisetum fluviatile ) from the genus Horsetail ( Equisetum ).

description

The shore horsetail is a perennial plant and reaches heights of 20 to 100 centimeters. The stem is simple, branched, 4 to 5 mm thick, sometimes unbranched at the top and slightly grooved. The central cavity is 1/6 to 1/2 the diameter of the stem. The Vallecular caves are the same size as the central caves. Each vascular bundle, also called the carinal cavity, is surrounded by an endodermis , so no cylinder can be seen when it breaks. The leaf sheaths are bell-shaped with approx. 12 teeth and up to 12 mm long. Ears of wheat are seldom present and they always remain closed.

Spore ripening is from June to July. The spores are numb , they have no appendage.

Occurrence

This article or paragraph presents the situation in Germany . Help us to describe the situation in other countries.

In Germany it is scattered in western Baden-Wuerttemberg , in Saxony , Mecklenburg-Western Pomerania , Schleswig-Holstein , rarely in Bavaria , Rhineland-Palatinate and Saarland , North Rhine-Westphalia , Hesse , in southern Thuringia , in Saxony-Anhalt , in south-western Brandenburg and in Berlin . Its general distribution in Germany is insufficiently known.

The horsetail inhabits moist to wet meadows, ditches and banks, and seeped embankments.

literature

  • Henning Haeupler , Thomas Muer: picture atlas of the fern and flowering plants of Germany (= the fern and flowering plants of Germany. Volume 2). 2nd, corrected and enlarged edition. Published by the Federal Agency for Nature Conservation. Ulmer, Stuttgart 2007, ISBN 978-3-8001-4990-2 .
  • Otto Schmeil, Jost Fitschen (greeting), Siegmund Seybold: The flora of Germany and the neighboring countries. A book for identifying all wild and frequently cultivated vascular plants. 95th completely revised u. exp. Edition. Quelle & Meyer, Wiebelsheim 2011, ISBN 978-3-494-01498-2 .
  • Eckehart J. Jäger (ed.): Excursion flora from Germany. Vascular plants: baseline. Founded by Werner Rothmaler . 20th, revised and expanded edition. Spektrum Akademischer Verlag, Heidelberg 2011, ISBN 978-3-8274-1606-3 .

Web links

Commons : Shore horsetail ( Equisetum × litorale )  - Collection of images, videos, and audio files