Ground tragacanth

from Wikipedia, the free encyclopedia
Ground tragacanth
Ground tragacanth (Astragalus exscapus)

Ground tragacanth ( Astragalus exscapus )

Systematics
Eurosiden I
Order : Fabales (Fabales)
Family : Legumes (Fabaceae)
Subfamily : Butterflies (Faboideae)
Genre : Tragacanth ( astragalus )
Type : Ground tragacanth
Scientific name
Astragalus exscapus
L.

The soil Astragalus ( Astragalus exscapus ), also earth tragacanth , Stemless tragacanth and Stängellos Tragant called, is a plant species within the family of legumes (Fabaceae). It is common in Central , Southeastern , Eastern Europe and Turkey .

description

Vegetative characteristics

The ground tragacanth grows as a deciduous, perennial herbaceous plant and reaches heights of 3 to 10 centimeters. Both the very short stem and the leaves are hairy in a densely spaced manner. The leaves are heaped in rosettes at the base of the stem. The foliage leaves , arranged in a basal rosette, are pinnate with 12 to 19 pairs of pinnate leaflets and have distinct end leaflets . The stipules are quite long and connected to the petiole.

Ground tragacanth ( Astragalus exscapus )
Ground tragacanth ( Astragalus exscapus )

Generative characteristics

The inflorescence usually has three to nine, sometimes up to twelve flowers. The hermaphrodite flowers are zygomorphic and five-fold with a double flower envelope . The five petals are light yellow. The almost sessile legumes are egg-shaped, puffy and densely shaggy with a length of 1.5 to 2 centimeters.

Chromosome number

The number of chromosomes is 2n = 16.

ecology

The blooming time of this hemicryptophyte extends in Central Europe from May to July , sometimes to September .

Occurrence and endangerment

The distribution area of ​​the soil tragacanth lies in Central Europe , Southeast Europe , Eastern Europe and Turkey . In the German-speaking area, soil tragacanth occurs in Germany , Austria , Switzerland and South Tyrol .

In Austria, the very rare occurrences are only known from the Pannonian area of the federal states of Lower Austria and Burgenland . The lime-loving species prefers dry grassland in the colline altitude range . In Austria the soil tragacanth is considered to be threatened with extinction. In Central Europe, the species occurs in companies of the Festucion valesiacae association, also in Pinus sylvestris companies; supraregional it is a class character of the pine steppe forests (Pulsatillo-Pinetea).

literature

  • Manfred A. Fischer, Karl Oswald, Wolfgang Adler: Excursion flora for Austria, Liechtenstein and South Tyrol . 3rd, improved edition. Province of Upper Austria, Biology Center of the Upper Austrian State Museums, Linz 2008, ISBN 978-3-85474-187-9 , p. 585 .

Individual evidence

  1. ↑ a b c d e soil tragacanth. In: FloraWeb.de.
  2. ↑ a b c d e f Manfred A. Fischer, Karl Oswald, Wolfgang Adler: Excursion flora for Austria, Liechtenstein and South Tyrol . 3rd, improved edition. Province of Upper Austria, Biology Center of the Upper Austrian State Museums, Linz 2008, ISBN 978-3-85474-187-9 , p. 585 .
  3. ↑ 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 603.
  4. ↑ Astragalus exscapus in the Germplasm Resources Information Network (GRIN) USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland.
  5. ↑ Distribution map at Euro + Med .

Web links

Commons : Ground tragacanth ( Astragalus exscapus )  - album with pictures, videos and audio files