Shimmering pondweed

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Shimmering pondweed
Systematics
Class : Bedecktsamer (Magnoliopsida)
Monocots
Order : Frog-spoon-like (Alismatales)
Family : Pondweed family (Potamogetonaceae)
Genre : Spawn herbs ( Potamogeton )
Type : Shimmering pondweed
Scientific name
Potamogeton × nitens
Weber

The shimmering pondweed ( Potamogeton × nitens ), also called glossy pondweed , is a nature hybrid from the plant genus pondweed ( Potamogeton ) within the family of the pondweed plants (Potamogetonaceae). It is a hybrid of Potamogeton gramineus and Potamogeton perfoliatus .

description

The shimmering pondweed is an herbaceous plant . The underwater leaves are up to 13 mm wide, oblong-lanceolate to lanceolate, with a rounded, not narrowed, half-stem-encompassing base, in front they are often sharply pointed, and they have small, very early falling teeth; they have a strong shine when dried. Floating leaves are seldom developed; their leaf blades are small, somewhat leathery, ovate and have short and broad-stalked stems. The Ochrea is up to 1.5 cm long, triangular and durable.

The stem is up to 30 cm long and slightly thickened from the middle upwards.

The flowering period is from June to August.

The partial fruits are sharply keeled on the outside; but they are seldom developed.

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

Occurrence

The shimmering pondweed occurs from the temperate zones of the northern hemisphere to the Philippines.

ecology

The shimmering pondweed is a water plant . It grows in standing or flowing, base-rich, oligo- to mesotrophic waters. In the shallow water area of lakes , ponds , backwaters and in river bays, it is mainly rooted on sandy ground at a water depth of 0.3 to 1.5, rarely up to 2.1 meters. It is the character species of the Potamogetonetum nitentis, but also occurs in the society of the Potamogetonetum panormitano-graminei.

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 .
  • 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. ↑ Rafaël Govaerts (ed.): Potamogeton × nitens. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved June 22, 2018.

Web links