Translations:Benutzer:Arian/Klett-Mini-Test/1443/en

Outward from the cambium arises the cellular tissue of the sieve tubes (*phloem*). This conducts the assimilates into all non-greening parts of the tree. Adjoining this is the cortex tissue or bast. The outer skin or epidermis finally offers protection against wind and weather. It brings the form of the plant to appearance. The bark harbours various cellular tissues, which in part contain chlorophyll — thus absorbing light — as well as individual cells that form calcium oxalate crystals in their vacuoles. Altogether, an intensive, dammed-up metabolic activity striving toward form prevails within the bark. Blossom-kindred substances, aromatic compounds such as tannins and their derivatives, are formed. In the image of the threefoldness of Sal, Mercury and Sulphur, one can recognise in the cross-section of the trunk, within the thin, supremely enlivened sheath of the bark, a compressed, dammed-up, mercurial shoot-growth that does not unfold into bud and