Flooding water fennel

from Wikipedia, the free encyclopedia
Flooding water fennel
Systematics
Order : Umbelliferae (Apiales)
Family : Umbelliferae (Apiaceae)
Subfamily : Apioideae
Tribe : Oenantheae
Genre : Water fennel ( Oenanthe )
Type : Flooding water fennel
Scientific name
Oenanthe fluviatilis
( Bab. ) Coleman

The flooding water fennel ( Oenanthe fluviatilis ), also called river water fennel or river horse seed , is a species of plant from the genus water fennel ( Oenanthe ) within the umbelliferae family (Apiaceae).

description

The flooding water fennel is a deciduous, herbaceous plant . It is a mostly flooding (or rooting in the mud), rarely flowering aquatic plant without tubers. The hollow stems are 1 to 2 meters long.

There is heterophyllia. The overwater leaves are simply pinnate, their sections are diamond-shaped, 15 to 25 millimeters long and divided into wider notched tips. The underwater leaves are finely divided, their tips are linear, 1 to 2 millimeters wide and wedge-shaped at the bottom.

The flowering period extends from June to July. The structure of the double-ended inflorescence is comparable to that of Oenanthe aquatica .

The double achane is 5 to 6 millimeters and its stylus 1 to 1.5 millimeters long.

The number of chromosomes is 2n = 22.

ecology

The flooding water fennel is a hydrophyte .

Occurrence

The flowing water fennel is an Atlantic floral element . In Western Europe it occurs in Great Britain , France , Ireland, Belgium, eastwards earlier in the Upper Rhine area and also in Denmark . Its main areal is located in north-western Europe . In Central Europe it seldom appeared on the Lower Elbe and occasionally in Alsace .

According to the 1996 red list of endangered plant species in Germany, the flooding water fennel is considered extinct or lost in Germany.

The flooding water fennel colonizes the reed beds on oxbow lakes and on cool groundwater lakes . It thrives best on nutrient and lime-poor muddy soils in clear and cool waters up to a water depth of 200 centimeters. In Central Europe it is a character species of the Ranunculion fluitantis association, but also occurs in the Sagittario-Sparganietum emersi from the Phragmition association.

Taxonomy

The first description was in 1843 under the name ( Basionym ) Oenanthe phellandrium var. Fluviatilis by Charles Cardale Babington in Manual of British Botany , p. 131. The rank of a species was in 1844 by William Higgins Coleman in Annals of natural history, ... , Volume 13, p. 188 published.

swell

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 .
  • 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 .
  • 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 4: Special part (Spermatophyta, subclass Rosidae): Haloragaceae to Apiaceae. Eugen Ulmer, Stuttgart 1992, ISBN 3-8001-3315-6 .
  • Dietmar Aichele, Heinz-Werner Schwegler: The flowering plants of Central Europe. 2nd Edition. Volume 3. Franckh-Kosmos, Stuttgart 2000, ISBN 3-440-08048-X .

Individual evidence

  1. ↑ a b c d e f g Oenanthe fluviatilis (Bab.) Coleman, River Horse Seed. In: FloraWeb.de.
  2. ↑ a b c 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.  715 .
  3. ^ R. Hand, 2011: Apiaceae. : Datasheet In: Euro + Med Plantbase - the information resource for Euro-Mediterranean plant diversity .

Web links

Commons : Flooding water fennel ( Oenanthe fluviatilis )  - Collection of images, videos and audio files