Stiff leek
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Allium strictum inflorescence |
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| Schrad. |
The stiffness leek ( Allium strictum ), also rigid leek called, is a plant from the genus allium ( Allium ) in the subfamily of the leek plants (Allioideae).
description
The stiff leek is a perennial herbaceous plant that reaches heights of 15 to 40 centimeters. The onion is very slim with a diameter of 0.5 to 0.8 centimeters and the outer shells are fibrous. The leaves are more or less flat, narrow band-shaped, a little runny on the top and 3 to 5 millimeters wide.
In doldigen inflorescence not be bulbils formed; it is enveloped by a single bract. The flower stalks are once or twice as long as the bracts. The hermaphrodite flowers are threefold. The six bracts are colored relatively light purple. The stamens are slightly above the crown. The stamens are covered with short and blunt teeth.
The number of chromosomes is 2n = 48, less often 16 or 32.
Occurrence and endangerment
The stiff leek is common in Central and Eastern Europe and in Asia up to Mongolia.
It grows on rock corridors and xerothermal lawns on dry, base-rich, nutrient-poor stone and clay soils. It is regionally a character species of the Allio-stricti-Festucetum pannonicae from the association Seslerio-Festucion, but also occurs in societies of the order Festucetalia valesiacae.
In Germany, the stiff leek according to Appendix 1 of the Federal Species Protection Ordinance i. V. m. Section 44 of the Federal Nature Conservation Act (BNatSchG) is particularly protected and is listed in the Red List of Ferns and Flowering Plants in Germany as endangered.
literature
- Siegmund Seybold : Flora of Germany and neighboring countries. A book for identifying vascular plants that grow wild and often cultivated . Founded by Otto Schmeil , Jost Fitschen . 93rd completely revised and expanded edition. Quelle & Meyer, Wiebelsheim 2006, ISBN 3-494-01413-2 .
- Hans-Joachim Zündorf, Karl-Friedrich Günther, Heiko Korsch, Werner Westhus (eds.): Flora of Thuringia. The wild fern and flowering plants of Thuringia . Weissdorn, Jena 2006, ISBN 3-936055-09-2 .
- Xu Jiemei, Rudolf V. Kamelin: Allium. In: Wu Zheng-yi, Peter H. Raven (Ed.): Flora of China . Volume 24: Flagellariaceae through Marantaceae . Science Press / Missouri Botanical Garden Press, Beijing / St. Louis 2000, ISBN 0-915279-83-5 , pp. 165 (English, online ).
Individual evidence
- ↑ a b 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. 130 .
- ↑ Rafaël Govaerts (Ed.): Allium strictum - data sheet at World Checklist of Selected Plant Families of the Board of Trustees of the Royal Botanic Gardens, Kew. Last accessed on September 24, 2016.
- ↑ Federal Agency for Nature Conservation: WISIA entry Allium lineare LINNAEUS , accessed on July 18, 2015.
Web links
- Allium strictum Schrad., Stiff Leek. In: FloraWeb.de.
- Stiff leek . In: BiolFlor, the database of biological-ecological characteristics of the flora of Germany.
- Profile and distribution map for Bavaria . In: Botanical Information Hub of Bavaria .
- Distribution of Allium lineare in Switzerland at InfoFlora, the national data and information center for Swiss flora .
- Allium lineare L. In: Info Flora , the national data and information center for Swiss flora .
- Distribution in the northern hemisphere according to Eric Hultén
- Data sheet distributed in Italy by Flora Italiana by Schede di Botanica .
