periderm

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per·i·derm

 (pĕr′ĭ-dûrm′)
n.
The outer layers of tissue of woody roots and stems, consisting of the cork cambium and the tissues produced by it, such as cork.

per′i·der′mal, per′i·der′mic adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

periderm

(ˈpɛrɪˌdɜːm)
n
(Botany) the outer corky protective layer of woody stems and roots, consisting of cork cambium, phelloderm and cork
[C19: from New Latin peridermis]
ˌperiˈdermal, ˌperiˈdermic adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

per•i•derm

(ˈpɛr ɪˌdɜrm)

n.
the cork-producing tissue of plant stems together with the cork layers and other tissues derived from it.
[1830–40; < New Latin peridermis. See peri-, -derm]
per`i•der′mal, per`i•der′mic, adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

per·i·derm

(pĕr′ĭ-dûrm′)
The outer, protective layers of tissue of woody roots and stems, consisting of the cork cambium and the tissues produced by it. See more at cork cambium.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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References in periodicals archive ?
In the anatomical/botanical sense the rhytidome (successive periderms interspersed with the non-conducting phloem) does not exist in the woody monocots, but the successive layers of the cork are separated by suberized undivided cortical cells (Philipp, 1923).
In the non-monocot woody plants, the epidermis subjected to pressure due to meristematic activity of vascular cambium is completely replaced by the periderm. The monocotyledons do not develop a type of periderm like that of dicotyledons or conifers (Weisse, 1897; Philipp, 1923).
In the living tree, as new phloem is formed, the older phloem undergoes anatomical changes and becomes obliterated phloem as it is sealed off by developing periderms (Howard 1971).
Collectively the cork cambium and the cells it produces--the cork cells and phelloderm--make up the periderm, a tissue that replaces the epidermis as the protective outer covering.
Periderm. This region is formed by suberized cells touching the inner dilated axial parenchyma.
In younger stems of Yucca brevifolia, periderm develops from periclinal divisions in the outer primary cortex.
Their findings showed that the fertile-zone morphological modifications correspond to several anatomical ones, especially in relation to the early development of periderm and loss of fibers in the secondary xylem and phloem.