Three-man barrel

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Three-man barrel
Elatine traiandra.JPG

Three-man tännel ( Elatine triandra )

Systematics
Rosids
Eurosiden I
Order : Malpighiales (Malpighiales)
Family : Barrel family (Elatinaceae)
Genre : Tännel ( Elatine )
Type : Three-man barrel
Scientific name
Elatine triandra
Schkuhr

The Dreimännige Tännel or Stiel-Tännel ( Elatine triandra ), also called Drestaubblättriger Tännel or Kreuz-Tännel , is a species of the genus Elatine within the family of the Tännelgewächse (Elatinaceae). It thrives in the northern hemisphere in Eurasia and in North America in stagnant waters .

description

Three-fold flower

The three-man Tännel is an annual herbaceous plant . The 2 to 15 centimeters long, creeping stem forms roots at the nodes . The leaves are divided into a petiole and a leaf blade. The petiole is at most as long as the blade, usually shorter. The leaf blade is elliptical to ovate-elongated and barely noticeably notched.

Flowering time is from June to September. The threefold flowers usually do not open and are sessile like the fruits. The chalice in two parts. The three petals are pink or white and as long as the calyx. There are three stamens . The seeds are slightly curved and have no longitudinal ribs.

The number of chromosomes is 2n = 36.

Occurrence

The three-man Tännel distributed in the northern hemisphere in Eurasia and North America . The Dreimännnige Tännel is circumpolar , its northern border is 68 ° north latitude. It has a very fragmented area . Distribution centers in Europe are in southeastern Central Europe , in southern Sweden and in southern Finland . In Central Europe, it occurs very rarely in the lowlands , in the Upper Rhine region , in Hesse , in northern and eastern Bavaria , in the Alpine foothills as well as in Upper and Lower Austria , in Styria , in Burgenland and at the foot of the Alps .

The three-man Tännel thrives best on lime-poor , humus-rich and nutrient-rich , sandy, slaggy or muddy soils . It inhabits shallow water zones on the banks of ponds and ponds , it rarely grows on the bank areas near the water level. The three-man tank is in decline wherever ponds are not regularly drained in autumn. In Central Europe it is a Cyperetalia fusci-order character.

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 2: Special part (Spermatophyta, subclass Dilleniidae): Hypericaceae to Primulaceae. Eugen Ulmer, Stuttgart 1990, ISBN 3-8001-3312-1 .
  • 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 Erich Oberdorfer : Plant-sociological excursion flora for Germany and neighboring areas . 8th edition. Verlag Eugen Ulmer, Stuttgart 2001, ISBN 3-8001-3131-5 . Page 666.

Web links

Commons : Dreimänniger Tännel ( Elatine triandra )  - Collection of images, videos and audio files