vascular bundle

vascular bundle

noun Botany.
a longitudinal arrangement of strands of xylem and phloem, and sometimes cambium, that forms the fluid-conducting channels of vascular tissue in the rhizomes, stems, and leaf veins of vascular plants, the arrangement varying with the type of plant.

Origin:
1880–85

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Collins
World English Dictionary
vascular bundle
 
n
a longitudinal strand of vascular tissue in the stems and leaves of higher plants

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
vascular bundle  
A strand of primary tissues found within the stem of a plant and consisting of xylem and phloem, along with cambium. The vascular bundles develop from the procambium of the growing stem. In the monocotyledons, vascular bundles are found in complex arrangements dispersed throughout the stem. In eudicotyledons, they are arranged in a ring, with the xylem of each bundle on the inside and the phloem on the outside. Also called fibrovascular bundle. See also fascicular cambium, interfascicular cambium.

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