Thick-leaved chickweed
Thick-leaved chickweed | ||||||||||||
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![]() Thick-leaved chickweed ( Stellaria crassifolia ), illustration |
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Systematics | ||||||||||||
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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
- ↑ 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
- Thick-leaved chickweed. In: FloraWeb.de.
- Distribution map for Germany. In: Floraweb .
- Distribution in the northern hemisphere.
- Thomas Meyer: Data sheet with identification key and photos at Flora-de: Flora von Deutschland (old name of the website: Flowers in Swabia )
- USDA data sheet.
- Biopix Foto de Images for (stellaria-crassifolia) Dickblättrige Sternmiere
- Pictures: [1] , [2]