Term (also cambium ring) for the hollow cylindrical growth layer in stems, trunks and roots of plants. This cell layer, which consists of only one layer, lies between the outer bark (bark and bast) and the sapwood zone (young wood). As it grows thicker, the cambium releases the cells of the bast to the outside and the cells of the wood to the inside. The inner cells are called xylem, the outer cells phloem. Xylem and phloem form the conductive tissue responsible for the transport of nutrients and water. See also under Vine and shoots as well as a list of all keywords relevant to grape varieties under Vine.
Image: By Zoph - unknown, Transferred from de.wikipedia, CC BY-SA 3.0, Link
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