from Wikipedia, the free encyclopedia

In botany, the term grape denotes a type of inflorescence in which there are stalked flowers on the extended main axis.


Grape (inflorescence) .svg

In a grape , the stalked flowers are on the side of a continuous, elongated stem axis . It is the basic form of racemous inflorescence .

This inflorescence type comes in very many as a basic form of plant families before. A typical example are the cruciferous vegetables (Brassicaceae), which have almost exclusively grapes as inflorescences. Often one finds grapes also with the butterflies (Faboideae) and hyacinth plants (Hyacinthaceae).

As an inflorescence, grapevines do not form clusters, but panicles ; their fruits are berries (see grape ).

Umbrella cluster

Umbrella cluster (inflorescence) .svg

If the main axis is compressed and the flower-bearing secondary axes are elongated, the result is an umbel-like shape, called an umbellate or umbrella cluster . This less common form of inflorescence is found in the umbellate milk star , but in an imperfect, terminal form, often in cruciferous vegetables such as shepherd's purse or candytuft . In the tansy , the flower heads are arranged as umbrella clusters.

There is a similar expression to the umbel-like shape in the umbrella panicle and umbel .

Double cluster

If you replace the flowers of the grape with partial inflorescences, you get a special dibotryum , the double cluster . If this only happens to the lateral flowers, the homeothetical form is obtained; If the main axis also forms a cluster, the heterothetical shape is obtained. The exchange of flowers in partial inflorescences can also take place in the partial inflorescences; a new branching level results and one speaks of a triple cluster or generally of a tribotryum.

Web links

Commons : Grape  - collection of images, videos and audio files