Star saxifrage
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Star saxifrage ( Saxifraga stellaris ) |
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The Star-saxifrage ( Saxifraga stellaris ), also Sternblütiger saxifrage called a protected in Germany and Austria is plant type from the kind Steinbrech ( Saxifraga ) in the family Saxifragaceae (Saxifragaceae).
features
The star-flowered saxifrage is a perennial plant that reaches heights of up to 30 centimeters. It grows in dense, loose lawns and forms rosettes of leaves on the foothills. The stem is erect and glandular or glabrous. The basal leaves are 50 millimeters long, 20 millimeters wide, ovoid to wedge-shaped, fleshy, shiny and sparsely hairy or glabrous. They are roughly toothed at the top. The inflorescence bears 3 to 15 long-stalked flowers. The 5 to 6 petals are 3 to 7 millimeters long, lanceolate and white, each with two yellow points on the base. The sepals are lanceolate, reddish and turned back during the flowering period and close to the flower stalk.
Flowering time is from June to September.
The star saxifrage has chromosome number 2n = 28.
Occurrence
The star-flowered saxifrage occurs from the mountains of Spain over the Alps and Carpathians to the Apennines and the Balkans from montane to subalpine in spring meadows, on creek banks and on moist rubble at altitudes of 1200 to 3000 meters. The species is common in the Alps. It thrives on cool, oozing, moderately nutrient-rich, base-rich, neutral to moderately acidic, humus-rich, often mossy, stony-sandy clay soils, also on pure stone soils. She is a cold water specialist and thrives in societies of the Montio-Cardaminetea class. In the Allgäu Alps, it rises on the north ridge of the Biberkopf in Bavaria up to 2,420 m above sea level.
Subspecies
This species splits into three subspecies:
- Saxifraga stellaris subsp. stellaris
- Brut Star saxifrage ( Saxifraga stellaris subsp. Prolifera (Sternb.) Temesy )
- Ordinary star saxifrage ( Saxifraga stellaris . Subsp engleri P. Fourn. , Syn .: Saxifraga stellaris var. Hispida Dalla Torre ; Saxifraga stellaris var. Robusta Engl. , Saxifraga stellaris subsp. Alpigena Temesy )
The nominate subsp. stellaris is absent in Central Europe. It occurs in Scandinavia , Great Britain , Ireland , Iceland , in the south of Greenland and in the extreme northeast of Canada . Common star saxifrage ( S. stellaris subsp. Engleri ) is widespread in the mountains of southern and central Europe, from Spain to the Carpathian Mountains . The third subspecies, the brood star saxifrage ( S. stellaris subsp. Prolifera ), bears brood buds in the inflorescence in addition to or instead of the flowers . It has only a small distribution area, so it is endemic in the Gurktal Alps in the border area of the Austrian states of Carinthia , Styria and Salzburg and in the Steiner Alps of Slovenia.
useful information
The star saxifrage can still form vigorous green lawns at a depth of 50 cm when completely submerged. However, it can no longer bloom there.
literature
- Xaver Finkenzeller: Alpine flowers , ISBN 3-576-11482-3
- Xaver Finkenzeller, Jürke Grau : Alpine flowers (Steinbach's natural guide). Mosaik Verlag GmbH, Munich 1996, ISBN 3-576-10558-1 .
- Wolfgang Adler, Karl Oswald, Raimund Fischer: Excursion flora of Austria. Ed .: Manfred A. Fischer . Ulmer, Stuttgart / Vienna 1994, ISBN 3-8001-3461-6 .
supporting documents
- ↑ Jaakko Jalas, Juha Suominen, Raino Lampinen, Arto Kurtto: Atlas florae europaeae . Volume 12 (Resedaceae to Platanaceae). Pages 138-139, Helsinki 1999. ISBN 951-9108-12-2
- ^ 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. 491 .
- ↑ Erhard Dörr, Wolfgang Lippert : Flora of the Allgäu and its surroundings. Volume 1, IHW, Eching 2001, ISBN 3-930167-50-6 , p. 648.
Web links
- Star saxifrage. In: FloraWeb.de.
- Star saxifrage . 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 .
- Saxifraga stellaris L. In: Info Flora , the national data and information center for Swiss flora . Retrieved November 2, 2015.
- 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 )
- Herbarium from the Linnaeus herbarium
- Images for Art
