Thick-leaved chickweed

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Thick-leaved chickweed
Thick-leaved chickweed (Stellaria crassifolia), illustration

Thick-leaved chickweed ( Stellaria crassifolia ), illustration

Systematics
Nuclear eudicotyledons
Order : Clove-like (Caryophyllales)
Family : Carnation family (Caryophyllaceae)
Subfamily : Alsinoideae
Genre : Star chickweed ( Stellaria )
Type : Thick-leaved chickweed
Scientific name
Stellaria crassifolia
Honor

The Stellaria crassifolia ( Stellaria crassifolia ) is a plant of the genus chickweed ( Stellaria ) within the family of Caryophyllaceae (Caryophyllaceae). It is widespread in the northern hemisphere .

description

The thick-leaved chickweed is a loosely growing, perennial herbaceous plant and reaches heights of 3 to 15 centimeters. The smooth stem is square. The opposite leaves are 6 to 15 millimeters long, oblong, lanceolate, green and somewhat fleshy.

The flowering period extends from July to August. The hermaphroditic flowers are radial symmetry and five-fold with a double flower envelope . The ( when fresh) indistinctly three-veined sepals are slightly shorter than the petals. The five free, 2 to 3 millimeters long petals are basically in two parts. There are three styluses.

The fruit capsule is egg-shaped and longer than the calyx.

The number of chromosomes is 2n = 26.

Occurrence

Stellaria crassifolia is widespread in the northern hemisphere in North America and Eurasia . In Central Europe it reaches the western limit of its distribution area in a line that goes from Kiel to Lüneburg and there turns to the east. Another location of Deusmauer Moos in the area of ​​Neumarkt in the Upper Palatinate has been described from the Franconian Jura . It occurs rarely in Mecklenburg-Western Pomerania , otherwise it is very rare.

Some locations of the thick-leaved chickweed were still known in southern Germany in the last century , for example at Federseeried and at Wurzacher Ried . However, they were already considered extinct after the Second World War and have not been confirmed since then. Locally, the sites may have been destroyed by the amelioration of marshland; whether this can only explain the decline in the species is questionable.

The thick-leaved chickweed needs wet, humus -rich and fairly nutrient-poor soils . It populates flat and intermediate moors , but also goes on slightly compacted open sand areas on heathland lakes . It is a character species of the Caricion lasiocarpae association.

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 .
  • 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 .
  • Dietmar Aichele, Heinz-Werner Schwegler: The flowering plants of Central Europe . 2nd Edition. tape 2 : Yew family to butterfly family . 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 374.

Web links

Commons : Thick-leaved chickweed ( Stellaria crassifolia )  - Collection of images, videos and audio files