Marsh fern

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Marsh fern
Marsh fern (Thelypteris palustris)

Marsh fern ( Thelypteris palustris )

Systematics
Ferns
Class : True ferns (Polypodiopsida)
Order : Spotted ferns (Polypodiales)
Family : Marsh fern family (Thelypteridaceae)
Genre : Thelypteris
Type : Marsh fern
Scientific name
Thelypteris palustris
Bulkhead
Lateral leaflets of the frond from the underside with sori
Marsh fern ( Thelypteris palustris )

The marsh fern or marsh lobed fern ( Thelypteris palustris ) belongs to the genus Thelypteris within the marsh fern family .

description

The swamp fern is a 30–80 cm high geophyte with a widely creeping rhizome up to 50 cm long . Its fronds are 15-100 cm long, slightly narrowed at the bottom and delicate. The spore- bearing fronds unfold several weeks after the sterile fronds. The leaflets are narrow, linear with entire margins (to weakly serrated), with yellowish glands and whitish hair and with a rolled back edge, they have no special scent. The sori lie between the midrib and the edge and are later brought closer to it. The spore maturity is between July and September.

The number of chromosomes is 2n = 70 or 72.

General distribution

The distribution area of ​​the marsh fern extends from Europe to the Middle East and North Africa, the somewhat different clan var. Pubescens (Laws.) Fern. occurs in East Asia and North America, the family var. palustris , which is native to Europe , is found mainly in temperate areas north to southern Sweden and Finland, in the subcontinental area and in the Alps up to 1200 m altitude, in the Mediterranean area it is rare.

Locations

The marsh fern occurs in loose herds on shaded to light-rich, but shady, fresh, lime-poor, acidic, often musty- humus clay soils . It mostly inhabits montane beech and beech-fir forests together with other ferns, but is also found in species-rich fir-spruce forests ( Pyrolo-Abietum ) and in subalpine high herbaceous meadows . It occurs mainly in the Carici elongatae-Alnetum society of the Alnion association or in the Magnocaricion societies.

Systematics

In Germany there is only the var. Palustris .

Synonyms of Thelypteris palustris are: Acrostichum thelypteris L. 1753, Aspidium thelypteris (L.) Sw. 1802, Dryopteris thelypteris (L.) A. Gray 1848, Lastrea thelypteris (L.) Presl 1836, Nephrodium thelypteris (L.) Stremp. 1822.

literature

  • 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 .
  • 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 .
  • Oskar Sebald, Siegmund Seybold, Georg Philippi (Hrsg.): The fern and flowering plants of Baden-Württemberg. Volume 1: General Part, Special Part (Pteridophyta, Spermatophyta): Lycopodiaceae to Plumbaginaceae. 2nd, supplemented edition. Eugen Ulmer, Stuttgart 1993, ISBN 3-8001-3322-9 .
  • Ruprecht Düll , Herfried Kutzelnigg : Pocket dictionary of plants in Germany and neighboring countries. The most common Central European species in portrait. 7th, corrected and enlarged edition. Quelle & Meyer, Wiebelsheim 2011, ISBN 978-3-494-01424-1 .

Individual evidence

  1. ↑ a b Erich Oberdorfer : Plant-sociological excursion flora for Germany and neighboring areas . With the collaboration of Angelika Schwabe and Theo Müller. 8th, heavily revised and expanded edition. Eugen Ulmer, Stuttgart (Hohenheim) 2001, ISBN 3-8001-3131-5 , pp.  82 .

Web links

Commons : Bog fern ( Thelypteris palustris )  - Collection of images, videos and audio files

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