Single flower hornwort
| Single flower hornwort | ||||||||||||
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Hornwort ( Cerastium uniflorum ) |
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| Cerastium uniflorum | ||||||||||||
| Clairv. |
The single flower hornwort ( Cerastium uniflorum ) also called single flower hornwort , is a species of plant that belongs to the genus of horn herbs ( Cerastium ) within the carnation family (Caryophyllaceae).
description
Vegetative characteristics
The single-flowered hornwort is a perennial herbaceous plant and reaches heights of 5 to 10 centimeters. It forms dense cushioned lawns with many sterile shoots. The opposite leaves are spatulate to ovate-lanceolate and hairy.
Generative characteristics
The flowering period extends from June to September. The flower stalks are hairy. The hermaphroditic flowers with a diameter of 2 to 3 centimeters are radially symmetrical and five-fold with a double flower envelope . The five free sepals are egg-shaped. The petals up to twice as long as the sepals. The five white petals are deeply cut.
The capsule fruit is curved and ten-toothed.
The number of chromosomes is 2n = 36.
Occurrence
The single-flowered hornwort is widespread in the Central Alps , Carpathians and the Balkans . In Austria it occurs moderately to frequently and is absent in the federal states of Vienna , Burgenland and Lower Austria .
The single-flowered hornwort thrives best on low-lime , stony soils , rubble, rock, pioneer lawns . It occurs at altitudes from 1900 to 3400 m in the alpine to subnival altitudes . It grows in societies of the Androsacion alpinae association, but also occurs in other societies of the class Thlaspietea rotundifolii.
literature
- Wolfgang Adler, Karl Oswald, Raimund Fischer: Excursion flora of Austria. Ed .: Manfred A. Fischer . Ulmer, Stuttgart / Vienna 1994, ISBN 3-8001-3461-6 .
- Xaver Finkenzeller: Alpenblumen , Munich 2003, ISBN 3-576-11482-3
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 378.
Web links
- Cerastium uniflorum Clairv., Hornwort. In: FloraWeb.de.
- Profile and distribution map for Bavaria . In: Botanical Information Hub of Bavaria .
- Cerastium uniflorum Clairv. In: Info Flora , the national data and information center for Swiss flora . Retrieved October 12, 2015.
- Thomas Meyer: Data sheet with identification key and photos at Flora-de: Flora von Deutschland (old name of the website: Flowers in Swabia )