Sticky black locust

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Sticky black locust
Illustration [1]

illustration

Systematics
Order : Fabales (Fabales)
Family : Legumes (Fabaceae)
Subfamily : Butterflies (Faboideae)
Tribe : Robinieae
Genre : Robinia ( Robinia )
Type : Sticky black locust
Scientific name
Robinia viscosa
Vent.

The sticky black locust ( Robinia viscosa ) is a small tree with pink flowers from the subfamily of the butterflies (Faboideae). The natural range is in the United States. The species is sometimes used as an ornamental shrub.

description

The sticky black locust is a tree up to 12 meters high . Annual twigs are dark red-brown and densely glandular-sticky. The leaves are up to 25 centimeters long, pinnate with 13 to 25 leaflets . The petiole is densely glandular and sticky. To thorns converted Stipules are small and are often lacking. The leaflets are 2.5 to 4 inches long, egg-shaped, blunt or pointed with a wedge-shaped base. The upper side of the leaf is dark green and glabrous, the underside is hairy mainly on the median and main nerves.

The flowers grow to six to sixteen in 5 to 8 centimeter long clusters with a densely glandular-sticky inflorescence axis. The flowers are about 2 inches long, pink in color with a light yellow spot on the rim . The calyx is reddened. As fruits , 5 to 10 centimeters long, glandular pods are formed. The sticky black locust blooms from June to August.

distribution

The natural range is in the United States in western North Carolina , in South Carolina and Tennessee . The sticky black locust grows in steppes and dry forests on dry to fresh, weakly acidic to strongly alkaline, sandy, sandy-gravelly or sandy-loamy, nutrient-rich soils in sunny to light-shaded locations. The species is sensitive to moisture, loves warmth and is frost hardy . It is assigned to winter hardiness zone 6a with mean annual minimum temperatures of −23.3 to −20.6 ° C.

Systematics

The sticky black locust ( Robinia viscosa ) is a kind of the genus of the locust ( Robinia ) in the family of the Leguminosae (Fabaceae). There it is assigned to the tribe Robinieae in the subfamily of the butterflies (Faboideae) . The species was first described by Asa Gray in 1854 . The genus name Robinia was chosen by Linné for the North American species Robinia pseudacacia , which was previously known as Acacia Americana Robini . The name refers to the French court gardener and director of the Jardin des Plantes in Paris Jean Robin (1550–1629). He is said to have brought the kind of America to France. It is more likely, however, that his son Vespasien Robin (1579–1662) raised the species from seeds that he received from America. The specific epithet viscosa comes from Latin and means "sticky".

There are two varieties :

  • Robinia viscosa var. Hartwigii (Koehne) Ashe
  • Robinia viscosa var. Viscosa

use

The sticky black locust is rarely used as an ornamental shrub because of its flowers .

proof

literature

  • 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. 546.
  • Jost Fitschen: Woody flora . 12th, revised and expanded edition. Quelle & Meyer, Wiebelsheim 2007, ISBN 3-494-01422-1 , p. 732 .
  • 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. ↑ Illustration by Pierre-Joseph Redouté ( source )
  2. ↑ German name after Roloff et al .: Flora der Gehölze , p. 546 and after Fitschen: Gehölzflora , p. 732
  3. ↑ a b c d Roloff et al .: Flora der Gehölze , p. 546
  4. ↑ a b Fitschen: Gehölzflora , p. 732
  5. ↑ a b c d Robinia viscosa. In: Germplasm Resources Information Network (GRIN). United States Department of Agriculture, accessed June 10, 2012 .
  6. ↑ Exactly: Etymological Dictionary of Botanical Plant Names , p. 540
  7. ↑ Exactly: Etymological Dictionary of Botanical Plant Names , p. 687

Web links

Commons : Sticky Black Locust ( Robinia viscosa )  - Collection of pictures, videos and audio files