Dictionaryvas'cular bun'dleBot. 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. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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