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bundle scar

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noun Botany.
  1. any small mark left on the leaf scar from the vascular tissue, where the leaf was once attached to the stem.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

bundle scar in Science

bundle scar

  1. A small mark on a leaf scar indicating a point where a vein from the leaf was once connected with the stem. Species often differ in the number and placement of the bundle scars within a single leaf scar, and bundle scars are used to identify trees in winter or from twigs without leaves.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.