Laburnum

Common laburnum ( Laburnum anagyroides )

Laburnum ( Laburnum ), also bean tree, Gold Rush or Yellow Bush called, is a plant genus of the subfamily of the Fabaceae ( Faboideae ) in the legume family ( Fabaceae ). The common laburnum ( Laburnum anagyroides ) is a very popular ornamental shrub because of its yellow flowers. He was elected in 2012 to the poisonous plant of the year. However, the Indian laburnum belongs to the genus Cassia.

• 5.1 Notes and references

Description

Vegetative characteristics

Laburnum species are shrubs or small trees that reach a growth of 5 to 6 meters. You have thornless branches. The change-constant leaves are long-stalked and pinnate three parts. The stipules are small.

Generative features

The page or pseudoendständigen, hanging, long, simple, racemose inflorescences contain bracts, bracts and many tiny flowers. The zygomorphic flowers are hermaphroditic and fünfzählig. The cup is slightly two-lipped. There are typical butterfly flowers. The five yellow petals, the boat is smaller than the wings and the flag are oval to circular. The ovary contains many ovules. The smooth style ends in a scar.

The only green, at maturity dark green to brown and bean-like legume contains many seeds and is slightly constricted between the seeds. The dark brown to black seeds are flat.

Use

The laburnum varieties make to the climate and the soil little claims.

They bloom profusely from April to June and are commonly found in parks and gardens as ornamental tree.

Poisonous plant

All parts of the laburnum are highly toxic, especially the seeds. Laburnum contains the poison cytisine.

System

The first description was in 1759 by Philipp valid Conrad Fabricius in Enumeratio Methodica Plantarum, p 228 A homonym is Laburnum Medik. published in Vorles. Churpfälz. Phys. - oecon. Ges, 2, 1787, 362

The genus belongs to the tribe Laburnum Genisteae in the subfamily of the Fabaceae ( Faboideae ) within the legume family ( Fabaceae ).

The genus Laburnum contains two types:

• Alpine laburnum ( Laburnum alpinum (Mill.) Bercht & J.Presl, Syn. Cytisus alpinus million ): It is native to Europe.

There is also a hybrid of these two types:

• Hybrid laburnum ( Laburnum × watereri ( Wettst. ) Dippel )

Swell

• SI Ali: Papilionaceae in the Flora of Pakistan: Laburnum - Online.