Small-leaved pea bush

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Small-leaved pea bush
Systematics
Order : Fabales (Fabales)
Family : Legumes (Fabaceae)
Subfamily : Butterflies (Faboideae)
Tribe : Galegeae
Genre : Pea bushes ( Caragana )
Type : Small-leaved pea bush
Scientific name
Caragana microphylla
Lam.

The small-leaved pea shrub ( Caragana microphylla ) is a small, yellow-flowering shrub and a representative of the butterflies (Faboideae). The natural range of the species is in Siberia and northern China. It is used to stabilize dunes and against soil erosion, but only rarely as an ornamental plant.

description

The small-leaved pea shrub is a broad- growing shrub that reaches a height of 2 to rarely 3 meters. The twigs are hairless or tomentose with dark gray to dark green bark . The leaves are divided into a petiole and a leaf blade. The leaf blade is pinnate; the ten to twenty leaflets are 3 to 10 millimeters long and 2 to 8 millimeters wide, obovate to obovate-oblong, with a blunt or truncated tip and hairless or downy to tomentose. The stipules are 1.5 to 5 millimeters long, thorny and stand obliquely upright. The petioles and spindle are not permanent.

The butterfly flowers stand individually on stems about 1 millimeter long. The calyx is 0.9 to 1.2 centimeters long, tubular to bell-shaped, hairless or tomentose. The corolla is yellow and about 2.5 inches wide. The flag is broadly ovate, with a short nail and a finely edged tip. The nail of the wings is half the size of the plate , the auricles are small and tooth-shaped. The nail and plate of the boat are about the same size, the auricle is inconspicuous. The ovary is often bare. The legumes are cylindrical, 4 to 5 inches long and 0.4 to 0.5 inches wide. The small-leaved pea bush flowers from May to June, the fruits ripen from July to August.

The number of chromosomes is 2n = 16.

Occurrence and location requirements

The natural range is in Russia in the Transbaikalia region and in the Republic of Tuva , in Mongolia and in the Chinese provinces of Gansu , Jilin , Liaoning , Inner Mongolia , Shaanxi and Shandong . The small-leaved pea bush grows in heather and dune trees at an altitude of 1000 to 2000 meters on dry to fresh, slightly acidic to strongly alkaline, sandy to fine gravel soils in sunny locations. The species loves warmth and is frost hardy.

Systematics

The Small-leaved shrub peas ( Caragana microphylla ) is a kind of the genus of caragana ( Caragana ) in the family of the Leguminosae (Fabaceae). There it is assigned to the tribe Hedysareae in the subfamily of the butterflies (Faboideae). Jean-Baptiste de Lamarck first described the species in 1785 . The generic name Caragana is derived from the Middle Turkish word "qaraqan", which denotes a pea bush, the specific epithet microphylla comes from the Greek and means "small-leaved".

The small-leaved pea bush is very rich in shape. Natural hybrids are formed in areas where the species occurs together with Caragana korshinskii .

use

The small-leaved pea shrub is rarely used as an ornamental shrub due to its decorative flowers . However, it is used to stabilize dunes, for water protection and against soil erosion .

proof

literature

  • Wu Zheng-yi, Peter H. Raven, Deyuan Hong (Eds.): Flora of China . Volume 10: Fabaceae . Science Press / Missouri Botanical Garden Press, Beijing / St. Louis 2010, ISBN 978-1-930723-91-7 , pp. 539 (English).
  • Andreas Roloff , Andreas Bärtels: Flora of the woods. Purpose, properties and use. With a winter key from Bernd Schulz. 3rd, corrected edition. Eugen Ulmer, Stuttgart (Hohenheim) 2008, ISBN 978-3-8001-5614-6 , p. 157.
  • Helmut Genaust: Etymological dictionary of botanical plant names. 3rd, completely revised and expanded edition. Nikol, Hamburg 2005, ISBN 3-937872-16-7 (reprint from 1996).

Individual evidence

  1. ↑ German name after Roloff et al .: Flora der Gehölze , p. 157
  2. ↑ a b c d e Mei-chen Chang, Lien-ching Chiu, Zhi Wei, Peter S. Green: Caragana microphylla . In: Wu Zheng-yi, Peter H. Raven, Deyuan Hong (Eds.): Flora of China . Volume 10: Fabaceae . Science Press / Missouri Botanical Garden Press, Beijing / St. Louis 2010, ISBN 978-1-930723-91-7 , pp. 539 (English).
  3. ↑ a b c d Roloff et al .: Flora der Gehölze , p. 157
  4. ↑ a b Caragana microphylla. In: Germplasm Resources Information Network (GRIN). United States Department of Agriculture, accessed April 10, 2012 .
  5. ↑ Exactly: Etymological Dictionary of Botanical Plant Names , p. 126
  6. ↑ Exactly: Etymological Dictionary of Botanical Plant Names , p. 385

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