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concentric bundle

noun
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Definition of concentric bundle

: a plant vascular bundle in which (1) phloem surrounds xylem or (2) xylem surrounds phloem

— called also respectively 1amphicribral bundle, 2amphivasal bundle

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“Concentric bundle.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/concentric%20bundle. Accessed 13 Jun. 2021.

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