fascicular cambium

noun Botany.
cambium that develops within the vascular bundles, producing secondary xylem and phloem.
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fascicular cambium  [%PREMIUM_LINK%]     (fə-sĭk'yə-lər)  Pronunciation Key 
Cambium that develops within the vascular bundles in the stem of a plant. Among the eudicotyledons, layers of fascicular cambium within the individual vascular bundles are connected by cambium tissue between the bundles (the interfascicular cambium) to form a ring of tissue within the stem. This ring of cambium matures to become the vascular cambium, which permits secondary growth of the eudicotyledon stem. See also interfascicular cambium, vascular bundle.

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