Sand tragacanth

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Sand tragacanth
Sand tragacanth (Astragalus arenarius)

Sand tragacanth ( Astragalus arenarius )

Systematics
Order : Fabales (Fabales)
Family : Legumes (Fabaceae)
Subfamily : Butterflies (Faboideae)
Tribe : Galegeae
Genre : Tragacanth ( astragalus )
Type : Sand tragacanth
Scientific name
Astragalus arenarius
L.

The sand tragacanth ( Astragalus arenarius ) is a species of the genus tragacanth ( Astragalus ) in the legume family (Fabaceae). It occurs in Northern, Central and Eastern Europe, mostly in smaller, partially isolated occurrences.

description

illustration

The sand tragacanth grows as a deciduous, perennial herbaceous plant that reaches heights of 10 to 30 centimeters. The stem is prostrate to ascending. The pinnate leaf blade usually has three to four, rarely up to nine pairs of leaflets. The leaflets are linear to lanceolate.

Flowering time is from June to July. The loose inflorescence contains three to eight flowers. The hermaphrodite flowers are zygomorphic and five-fold with a double flower envelope . The cup is 4 to 5 millimeters long. The light purple-colored, rarely white corolla has the typical structure of the butterflies . The boat is shorter than the flag .

The upright legumes are linear and hairy gray, sometimes balding.

The number of chromosomes is 2n = 16.

ecology

The sand tragacanth is a hemicryptophyte . He's a deep rooter.

Occurrence and endangerment

The main distribution area of the sand tragacanth is in Eastern Europe . The sand tragacanth was found in Sweden , Germany , Poland , the former Czechoslovakia , Belarus , Estonia , Lithuania , Latvia , the European part of Russia , Ukraine and the Crimea . In Central Europe , the sand tragacanth occurs sporadically near Nuremberg and very rarely in Brandenburg , Mecklenburg and Saxony .

The sand tragacanth thrives best on calcareous , loose, sandy soils that should contain a little humus . It colonizes sunny and warm locations on roadsides, embankments and in sparse forests . It occurs in societies of the Koelerion glaucae association, but also in those of the Cytiso-Pinion association.

Astragalus arenarius is registered with the IUCN for many areas of its distribution as "Least Concern" = "not endangered". In Estonia and Lithuania it is rare and in the Czech Republic it is only known from a few isolated locations. The last survey in 2010 found that stocks are declining. In the Red List of Endangered Plant Species in Germany, it is rated as critically endangered.

Taxonomy

Astragalus arenarius was first published in 1753 by Carl von Linné in Species Plantarum , 2, p. 759. There are three homonyms : Astragalus arenarius Lapeyr. (in Histoire Abrégée des Plantes des Pyrénées 1813, p. 429); Astragalus arenarius Pall. (in Species Astragalorum , plate 34); Astragalus arenarius O.F. Muell. (in Icones Plantarum ... Florae Danicae Nomine Inscriptum. Kobenhavn , p. 614). A synonym for Astragalus arenarius L. is Tragacantha arenaria (L.) Kuntze .

literature

  • Otto Schmeil , Jost Fitschen (greeting), Siegmund Seybold : The flora of Germany and the neighboring countries. A book for identifying all wild and frequently cultivated vascular plants. 95th completely revised u. exp. Edition. Quelle & Meyer, Wiebelsheim 2011, ISBN 978-3-494-01498-2 .
  • Henning Haeupler , Thomas Muer: picture atlas of the fern and flowering plants of Germany (= the fern and flowering plants of Germany. Volume 2). 2nd, corrected and enlarged edition. Published by the Federal Agency for Nature Conservation. Ulmer, Stuttgart 2007, ISBN 978-3-8001-4990-2 .
  • Dietmar Aichele, Heinz-Werner Schwegler: The flowering plants of Central Europe. 2nd edition, Volume 2, Franckh-Kosmos, Stuttgart 2000, ISBN 3-440-08048-X .

Individual evidence

  1. ↑ a b c d e f Sand tragacanth. In: FloraWeb.de.
  2. ↑ a b c Erich Oberdorfer : Plant-sociological excursion flora for Germany and neighboring areas . 8th edition. Verlag Eugen Ulmer, Stuttgart 2001, ISBN 3-8001-3131-5 . Page 602–603.
  3. ^ A b Astragalus arenarius in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved May 30, 2014.
  4. ↑ Astragalus arenarius in the endangered Red List species the IUCN 2013 Posted by: T. Smékalová, V. Holubec, J. Labokas, Z. Bulińska, V. Melnyk, R. birds, 2010. Retrieved on May 30, 2014 ..
  5. ^ Linnaeus scanned in at biodiversitylibrary.org in 1753 .
  6. ↑ Astragalus arenarius at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed May 30, 2014.
  7. ↑ Data sheet at The Euro + Med PlantBase - the information resource for Euro-Mediterranean plant diversity - data taken from ILDIS.

Web links

Commons : Sand tragacanth ( Astragalus arenarius )  - Collection of images, videos and audio files