Silver acacia

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Silver acacia
Blossoming silver acacia (Acacia dealbata)

Blossoming silver acacia ( Acacia dealbata )

Systematics
Eurosiden I
Order : Fabales (Fabales)
Family : Legumes (Fabaceae)
Subfamily : Mimosa family (Mimosoideae)
Genre : Acacia ( Acacia )
Type : Silver acacia
Scientific name
Acacia dealbata
link

The silver wattle ( Acacia dealbata ), also known as False Mimosa called, belongs to the large genus of Acacia ( Acacia ) in the family of legumes, subfamily Mimosa Family . The silver acacia is native to Southeast Australia . In southern England , this frost-sensitive species survives winter, but flowers better in climates with longer, drier summers. The silver acacia is often referred to as mimosa in Europe , and also as winter mimosa ( mimosa d'hiver ) in France because of its heyday .

description

The silver acacia is a fast-growing, but also short-lived tree . Its only trunk has a smooth, gray bark . Each double-pinnate leaf is made up of numerous leaflets , which in turn are composed of hundreds of tiny leaflets covered with white hairs, which gives the leaves a silvery sheen. The purpose of the hairs is to reflect part of the sunlight and thus protect the tree from excessive evaporation. In late winter or spring, the dome-shaped crown is adorned with numerous flower branches with small, spherical, golden-yellow flower clusters.

The number of chromosomes is 2n = 26, rarely 52.

Systematics

A synonym for Acacia dealbata Link is Acacia decurrens Willd. var. dealbata (Link) F. Muell.

photos

Individual evidence

  1. In southern Ticino, in the southwest of England and in southern France, Acacia dealbata and other species can not only be cultivated in horticulture, but also occasionally grow wild or even establish themselves. Konrad Lauber, Gerhart Wagner: Flora Helvetica . 4th edition. Haupt-Verlag, Bern / Stuttgart / Vienna 2007, ISBN 978-3-258-07205-0 , p. 578 No. 1080 a : "Acacia dealbata: Wildering in the southern TI." - David Aeschimann, Konrad Lauber, Daniel Martin Moser, Jean-Paul Theurillat: Flora alpina. An atlas of all 4500 vascular plants in the Alps . tape 1 . Haupt-Verlag, Bern / Stuttgart / Vienna 2004, ISBN 3-258-06600-0 , p. 816–817 (marked in the distribution map for the canton of Ticino and the province of Como.). - Clive Stace: New Flora of the British Isles . 2nd Edition. Cambridge University Press, Cambridge u. a. 1997, p. 398 (English): “Acacia melanoxylon: grown for ornament; locally +/- naturalized in South Devon and Scillies. - Other species: A few species are grown for ornament in SW England and may sometimes spread very locally by suckers or produce young seedlings, but are not truly naturalized. " - Jean-Marc Tison, Bruno de Foucault, Société botanique de France: Flora Gallica. Flore de France . 1st edition, 2nd printing (with numerous corrections). Biotope Éditions, Mèze 2014, ISBN 978-2-36662-012-2 , p. 708 (French): «A. dealbata: Provence siliceuse; 0-300 m; naturalized; planté et parfois échappé. Ouest, sud-ouest, Midi, Corse, surtout sur le littoral - forêts méditerranéennes acidiphiles (à l'état naturalisé). » - These places correspond roughly to winter hardiness zone 9 at Andreas Roloff, Andreas Bärtels: Flora der Gehölze. Purpose, properties and use . 2nd Edition. Eugen Ulmer, Stuttgart 2006, ISBN 978-3-8001-4832-5 , pp. Map on the front flyleaf .
  2. Manfred A. Fischer , Wolfgang Adler, Karl Oswald (arrangement): Exkursionsflora for Austria, Liechtenstein and South Tyrol . 2nd Edition. Upper Austrian State Museums, Linz 2005, ISBN 3-85474-140-5 , p. 548 : "... genus Acacia (real acacia) ...: flowering branches in our flower trade under the false name mimosa." - Jean-Marc Tison, Bruno de Foucault, Société botanique de France: Flora Gallica. Flore de France . 1st edition, 2nd printing (with numerous corrections). Biotope Éditions, Mèze 2014, ISBN 978-2-36662-012-2 , p. 708 (French): "mimosa commun, mimosa d'hiver"
  3. Flowering period in France from December to March: Jean-Marc Tison, Bruno de Foucault, Société botanique de France: Flora Gallica. Flore de France . 1st edition, 2nd printing (with numerous corrections). Biotope Éditions, Mèze 2014, ISBN 978-2-36662-012-2 , p. 708 (French).
  4. ^ Acacia dealbata at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
  5. ^ Acacia dealbata in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland.

Web links

Commons : Silver Acacia ( Acacia dealbata )  - Album with pictures, videos and audio files