Chamaecytisus

Regensburg dwarf gorse ( Chamaecytisus ratisbonensis )

The dwarf gorse ( Chamaecytisus ) are a genus of dwarf shrubs of the legume family ( Fabaceae ).

Features

There are dwarf shrubs, can wear the thorns. In Central Europe only thornless species are native. The leaves are distinctly stalked. You are pinnate ternate, the leaflets are entire. Stipules are absent.

The flowers are in clusters terminally at this year's shoots, like the head pulled together and surrounded by a bract wreath. Or the flowers are individually up to fourth of lateral short shoots in axils of last year's shoots. The flower stem is from one to six millimeters long and shorter than the calyx.

The calyx is tubular and two-lipped with the upper lip bidentate and tridentate lower lip. The calyx teeth are not as deeply cut as the lips. The crown is yellow. Rarely is white or red. The flag is more than wings and keel. The boat is almost straight and blunt. The 10 stamens are all grown. The stylus is rolled. The flowers have a folding mechanism and are pollinated by bumblebees langrüsslige.

The sleeves are in the calyx sessile and significantly longer than the calyx. they are pressed together, and of a black color. They contain eight to 16 seeds. The sleeves jump at maturity on, there are spin fruits that dwarf gorse include dehydration spreader. The seeds are lens-shaped and have a diameter of two to four millimeters. Enter Elaiosom. The seeds are disseminated by ants ( myrmecochory ).

System

The genus dwarf gorse is made within the tribe Genisteae in the subtribe Genistinae, along with Laburnum, Cytisophyllum, Cytisus, Ulex and Genista. There are around 40 species of which 35 occur in Europe. The genus was first described by Johann Heinrich Friedrich Link 1831 in the manual to identify the nutzbarsten and most abundant crops. The native species in Central Europe are:

• Purple dwarf gorse ( Chamaecytisus purpureus ( Scop. ) Link ) in Carinthia and Tyrol, in addition in the Southern Alps and the Dinaric Mountains.
• Austrian dwarf gorse ( Chamaecytisus austriacus (L.) Link ) in the Pannonian region
• Regensburg dwarf gorse ( Chamaecytisus ratisbonensis ( Schaeff. ) Rothm. )
• Head - dwarf gorse ( Chamaecytisus supinus (L.) Link )
• Rauhaariger dwarf gorse ( Chamaecytisus hirsutus (L.) Link )

Other types:

• Sprossender dwarf gorse ( Chamaecytisus prolifer ( L. f ) link) - Canarian endemic