File:Woody Dicot Stem Starch Sheath and Pith in Year Tilia (34319698624).jpg

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cross section: Tilia magnification: 40x

The vascular cylinder consists of an narrow outer ring of primary phloem, a middle ring of vascular cambium and a deeper larger ring of primary xylem. Single cell thick medullary rays extend out from the large parenchymatous pith.

The deepest zone of primary xylem is separatred from the central pith by a starch sheath of dark staining starch filled parenchyma cells.
Date
Source Woody Dicot Stem: Starch Sheath and Pith in Year Tilia
Author Berkshire Community College Bioscience Image Library

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Creative Commons CC-Zero This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication.
The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.

This image was originally posted to Flickr by bccoer at https://flickr.com/photos/146824358@N03/34319698624 (archive). It was reviewed on 23 June 2018 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-zero.

23 June 2018

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current00:02, 23 June 2018Thumbnail for version as of 00:02, 23 June 20183,264 × 1,840 (1.69 MB)Meisam (talk | contribs)Transferred from Flickr via #flickr2commons

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