Narrow-leaved pondweed

from Wikipedia, the free encyclopedia
Narrow-leaved pondweed
Potamogeton x angustifolius.JPG

Narrow-leaved pondweed ( Potamogeton × angustifolius )

Systematics
Class : Bedecktsamer (Magnoliopsida)
Monocots
Order : Frog-spoon-like (Alismatales)
Family : Pondweed family (Potamogetonaceae)
Genre : Spawn herbs ( Potamogeton )
Type : Narrow-leaved pondweed
Scientific name
Potamogeton × angustifolius
J. Presl

The narrow-leaved pondweed ( Potamogeton × angustifolius Bercht. & J.Presl ; Syn .: Potamogeton × zizii W.DJKoch ex Roth , Potamogeton × babingtonii A.Benn. ) Is a natural hybrid from the plant genus Laichkräuter ( Potamogeton ) within the spawn herb family (Potamogetonaceae). It is a hybrid between Potamogeton lucens and Potamogeton gramineus .

description

The narrow-leaved pondweed is a perennial herbaceous plant . It forms a strong rhizome with a diameter of 3 to 4 millimeters. The water leaves are prickly, thin, translucent, often more or less folded, sessile or short-stalked, the upper stalked longer than the lower. At the base of the stem, the water leaves are reduced to phyllodes . The floating leaves are stalked longer, up to 10 inches long and 3 inches wide and more or less leathery.

The flowering period is from May to October. The stem is thickened.

It is the only hybrid in the genus Laichkraut that blooms profusely and produces fruit.

The fruits are 2.5 to 3 millimeters long, it is not known whether they can also germinate.

The chromosome number of the species is 2n = 52.

Narrow-leaved pondweed ( Potamogeton × angustifolius )

Occurrence

The distribution area of ​​the narrow-leaved pondweed reaches from Europe to the western Himalayas. It occurs in societies of the order Potamogetonetalia.

ecology

The narrow-leaved pondweed is an aquatic plant that grows in stagnant or slow-flowing, alkaline and often lime-rich, weakly meso to eutrophic waters over sandy-gravelly to muddy ground in 1 to 2, rarely up to 5 meters water depth; it also endures brief dehydration and then forms a landform.

Taxonomy

The first description of the narrow-leaved pondweed as Potamogetin × angustifolius was made by Jan Svatopluk Presl in F.Berchtold & JSPresl, Prir. Rostlin 1 (Zabnj.): 19 (1821). Later it was described again as new by Albrecht Wilhelm Roth as Potamogeton × zizii W.DJKoch ex Roth in Enum. Pl. Phaen. Germ. 1 (1): 531 (1827), to which WDJ Koch assigned the authorship . With the name he honored the German botanist and teacher in Mainz Johann Baptist Ziz (Mainz October 8, 1779 to December 1, 1829 Mainz).

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 .
  • Rothmaler : Excursion flora from Germany, vascular plants: basic volume. 20th edition, 2011, Spektrum Verlag Heidelberg, ISBN 978-3-8274-1606-3 .
  • 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, Arno Wörz (eds.): The fern and flowering plants of Baden-Württemberg. Volume 7: Special part (Spermatophyta, subclasses Alismatidae, Liliidae Part 1, Commelinidae Part 1): Butomaceae to Poaceae. Eugen Ulmer, Stuttgart 1998, ISBN 3-8001-3316-4 .

Individual evidence

  1. ↑ a b Erich Oberdorfer : Plant-sociological excursion flora for Germany and neighboring areas . 8th edition. Page 105. Stuttgart, Verlag Eugen Ulmer, 2001. ISBN 3-8001-3131-5
  2. ↑ a b Rafaël Govaerts (Ed.): Potamogeton × angustifolius. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved August 16, 2016.
  3. ↑ Walter Erhardt among others: The great pikeperch. Encyclopedia of Plant Names . Volume 2, page 2089. Verlag Eugen Ulmer, Stuttgart 2008. ISBN 978-3-8001-5406-7

Web links

Commons : Narrow-leaved pondweed ( Potamogeton × angustifolius )  - Collection of images, videos and audio files