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Branch attachment in common ash Fraxinus excelsior L. Figure 1: Anatomical drawing of the wood grain of a branch attachment in a tree. Initially branches are mechanically attached to the trunks of trees by forming interlocking wood grain patterns at the top of the joint, within what is known as 'axillary wood' (Fig. 1). [1]
A branch collar on a common oak (Quercus robur L.). Tree branches are attached to the trunk with a series of trunk collars that annually envelope the branch collar. [1] The branch tissues develop a basal collar first in spring, then trunk tissue envelops the collar later during seasons of growth. [1]
A tree fork is a bifurcation in the trunk of a tree giving rise to two roughly equal diameter branches. These forks are a common feature of tree crowns. The wood grain orientation at the top of a tree fork is such that the wood's grain pattern most often interlocks to provide sufficient mechanical support.
Large branches are known as boughs and small branches are known as twigs. [3] The term twig usually refers to a terminus, while bough refers only to branches coming directly from the trunk. Due to a broad range of species of trees, branches and twigs can be found in many different shapes and sizes.
In the early days, felled logs were transported using simple methods such as rivers to float tree trunks downstream to sawmills or paper mills. This practice, known as log driving or timber rafting, was the cheapest and most common. Some logs, due to high resin content, would sink and were known as deadheads.
Trunks allow air to travel in, which enables scent molecules to travel up the trunk and reach specialized cells. These specialized olfactory cells allow elephants to pick up on even the tiniest of ...
An elephant’s trunk serves a lot of important purposes: eating, drinking, and communication are some of the most common uses for trunks. However, trunks are thought to have adapted in response ...
The base of a Yellow Birch trunk. In botany, the trunk (or bole) is the stem and main wooden axis of a tree, [1] which is an important feature in tree identification, and which often differs markedly from the bottom of the trunk to the top, depending on the species. The trunk is the most important part of the tree for timber production.