Wisteria

Chinese Wisteria ( Wisteria sinensis ), illustration

The Wisteria ( Wisteria ), also Wisterien, wisteria, wisteria, wisteria, wisteria glycines or referred to, is a genus in the subfamily of the Fabaceae ( Faboideae ) within the legume family ( Fabaceae ). The botanical name honors the American doctor and professor at the University of Pennsylvania Caspar Wistar ( 1761-1818 ).

The botanist Thomas Nuttall named the genus Wisteria Wistar's honor. Although the spelling Wisteria (instead of Wistaria ) was an etymological error, but it is according to the rules of botanical nomenclature ( International Code of Botanical Nomenclature ) maintain.

Description

All Wisteria species are hardy, fast growing, woody vines ( lianas ). In winter, only the soft wood freezes a little. Depending on the type can be achieved stature heights up to 30 m ( Wisteria sinensis). Wisteria blooms usually twice a year, the first flowers appear in spring before the leaves. A second thrust flowers followed in July / August. The change-constant leaves are pinnate, the leaflets are entire. Most small stipules are present.

Are formed with early falling bracts terminal, showy, large, pendulous racemose inflorescences. The hermaphrodite flowers are zygomorphic and fünfzählig. The two upper sepals are shorter and partly covered, the top three are longer. The five petals are blue or white. The two wings are not attached to the boat. The stylus is smooth. The plant forms hard, bean-like pulses with a velvety surface. Ripe pods explode right to set their seeds freely. The seeds are round and flat, lens- similar.

Use

Your grades are used for greening of pergolas and walls of houses. Wisterien grow very quickly in a sunny position and well drained soil and tend to their main shoots to grow over trellises. Suitable why are free-standing, firmly rooted sturdy trellises that can still carry the weight of the blue rain even after years. The stability of a scaffold, which is directly attached to the house wall should be inspected annually. Blue Rain is damaging with his vigor able to the building structure of a house by his instincts for example, move roofing, constrict downpipes, balusters bend or loosen Rank hurry by looping out of the anchorage. In simple trellises individual bars are pushed to their connections regularly differ from the massive tendrils of the plant. However, this usually has no negative effect, as the vines continue to hold the scaffold components firmly in position and form with them a stable composite. Instead Rank ropes should therefore rods are used, hold a distance of 1.5 m from facade parts that should not be overgrown.

Wisteria can even tear or break massive mounts by Rank ropes over the years. But if you have only a little available space and as a climbing aid remains only the cable system on the house wall, you can with little effort prevent the plant from destroying the supports used. For this purpose, only the young main trunk must be re- settled at the end of the Wachtumssaison from the rope and then tied up in a straight line to it.

Toxic ingredients

In all parts of the plant alkaloids are found. In the seeds and pods mainly lectin and another unknown substance in the bark and roots is Wistarin, a toxic glycoside contained.

Types and distribution

Wisteria species are native to East Asia, Australia and eastern North America. In the genus Wisteria, there are about ten species (selection):

  • Wisteria brachybotrys ( Syn: W. venusta )
  • Japanese Wisteria ( Wisteria floribunda )
  • Formosa Wisteria ( Wisteria × formosa )
  • American Wisteria ( Wisteria frutescens L.): Wisteria frutescens L. var frutescens
  • Wisteria frutescens var macrostachya Torr. & A. Gray ( Syn: Wisteria macrostachya ( Torr. & A. Gray ) Nutt ex BLRob & Fernald. . )

Today, in another genus:

  • Millettia japonica (. Siebold & Zucc ) A. Gray ( Syn: Wisteria japonica Siebold & Zucc. )

Pictures

Blue Rain fruits

Seeds and split open, dried leguminous leaves

Habit

White-flowering Wisteria

Blue rain in a twenty meter high spruce

Others

The street where the TV series Desperate Housewives plays, called Wisteria Lane.

Also in Harry Potter is the wisteria ago: The house of a witch in the neighborhood of Harry Potter's foster parents is in the Wisteria Walk, the JK Rowling called in the original English Wisteria Walk.

Swell

  • S. I. Ali: description in the Flora of Pakistan. (English )
Rosids Millettieae Caspar Wistar (physician)
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