| In a number of species, regardless of their wall formation type, new periclinal cell divisions may occur when the tapetum differentiates. |
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| Every type started its development with an epidermal cell, which first underwent a periclinal cell division. |
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| The first pattern is related to the differentiation of the cambial derivatives to either xylem or phloem through periclinal segmentations. |
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| The cell containing the infection thread, or the neighbouring cell, has green-stained protuberances on its periclinal walls. |
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| Ornamentation of the periclinal walls could be used to discriminate four morphological types. |
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| Superficially it appears to be a periclinal chimera with a chlorophyll-deficient mutation in the second layer of the meristem. |
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| Moreover, in sun leaves, anticlinal and periclinal divisions occur almost synchronously. |
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| This process is initiated by anticlinal and periclinal divisions of a few callus cells only. |
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| They also report the absence of periclinal cell divisions at the base of the mutant awn. |
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| Guard-cell walls parallel to the root surface are considered periclinal. |
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