Thin-eared sedge
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Thin-eared sedge ( Carex strigosa ) |
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The thin sedge ( Carex strigosa ) is a species of the sour grass family (Cyperaceae). The species is easy to confuse with the more common forest sedge ( Carex sylvatica ).
features
The thin sedge is a perennial, evergreen, herbaceous plant that reaches heights of 40 to 100 cm. It forms short runners. The stems are smooth and triangular.
The leaves are 5 to 12 mm wide and folded flat lengthways. They can be indistinctly keeled. They are bare, grass-green, the tops are covered with rough rows of teeth. The lower leaf sheaths have no spreading and are light brown. The ligule are acute-angled. The leaves are always shorter than the stems.
The thin-eared sedge is one of the different-eared sedge. The terminal spikelet is male. There are three to five, rarely up to seven female spikelets. They are loose-flowered and slender with a short stem. They are almost upright and some are over 7 cm long, but only 2 to 3 mm wide. The bracts have a right long, stem-encompassing sheath. The lowest bract protrudes over its spikelet, but not the entire inflorescence . The bract is pointed and pale green with a white skin edge. It's shorter than the fruit. Flowering time is June and July, pollination takes place by the wind ( anemophilia ).
The fruit is 3 mm long, green with longitudinal veins, glabrous to slightly rough. The shape is lanceolate-elliptical, the end is gradually narrowed, the beak is short, while it is long in the similar forest sedge. The stamp has three scars .
The number of chromosomes is 2n = 66.
Distribution and locations
The thin-eared sedge occurs from Europe to northern Iran. It thrives in the submeridional-montane to temperate Florence zones with an oceanic climate (continental level 1 to 2). In Austria the species is considered endangered.
The thin sedge grows in moist deciduous forests, in brook floodplain forests and in spring areas. It occurs mainly on nutrient-rich, lime-poor, dense soils. It rises up to the montane altitude level . It is a waterlogger. It is an association character species of the Alno-Ulmion minoris . It has its main distribution in Central Europe in the Carici remotae-Fraxinetum and Pruno-Fraxinetum, but also occurs in societies of the Cardamino-Montion association.
literature
- Siegmund Seybold (Ed.): Schmeil-Fitschen interactive (CD-Rom), Quelle & Meyer, Wiebelsheim 2001/2002, ISBN 3-494-01327-6
- Werner Rothmaler: Excursion flora from Germany. Volume 4. Vascular Plants: Critical Volume . 10th edition, Elsevier, Munich 2005, ISBN 3-8274-1496-2 , p. 856.
Individual evidence
- ↑ Rafaël Govaerts (ed.): Carex strigosa. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved October 24, 2016.
- ^ 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. 189-190 .
Web links
- Thin-eared sedge. In: FloraWeb.de.
- Thin-eared sedge . 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 .
- Carex strigosa Huds., Map for distribution in Switzerland In: Info Flora , the national data and information center for Swiss flora .
- Thomas Meyer: Data sheet with identification key and photos at Flora-de: Flora von Deutschland (old name of the website: Flowers in Swabia )