Tree into the Botanik a persistent (of several years) plant one calls, which possesses a clearly recognizable upright trunk felled trees, which climbs branches, which train again branches, sheets and blooms from a root and, is at that aboveground. The branches extend each year by driving out Endknospen, fell trees and increase continuously in thickness and extent. The special characteristic of the tree is that its holziger trunk develops a crown consisting of leaf-rising up branches only in a certain height.

Groups of plants, at which trunks occur

ways of life occur in five different groups of plants: Genuine trees are the deciduous trees (from the Bedecktsamern) as well as the coniferous trees (from the resinous wood plants). Both groups of plants have felled trees trunks.

Besides three smaller groups of plants occur, which train tree-like structures: the palms, the Palmfarne and the these three groups do not possess genuine wood with Dickenwachstum.Daher are also relatively even the master diameter (from bottom to top). The trunk develops from the By definition of tree are not palms, Palmfarne and tree ferns genuine trees, but ways of life.

The tree form is mainly in approximately 50 higher plant families. On the other hand the tree form is usually missing with algae, Moosen, lily plants, Iridaceae, Hydrocharitaceae, Orchideen, Chenopodiaceae, and also with the Lamiales, Convolvulaceae, bellflower plants, Cucurbitaceae, Saxifragaceae, Papaveraceae, Ranunculaceae or Caryophyllaceae.

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