Concept
Version 9
Created by Boundless
Stem Anatomy
Vascular bundles
In (a) dicot stems, vascular bundles are arranged around the periphery of the ground tissue. The xylem tissue is located toward the interior of the vascular bundle; phloem is located toward the exterior. Sclerenchyma fibers cap the vascular bundles. In (b) monocot stems, vascular bundles composed of xylem and phloem tissues are scattered throughout the ground tissue.
Source
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"OpenStax College, Stems. October 17, 2013."
http://cnx.org/content/m44702/latest/Figure_30_02_06.jpg
OpenStax CNX
CC BY 3.0.