In botany, describing a vascular bundle where the phloem (food-conducting tissue) is both inside and around the xylem (water-conducting tissue).
From Greek 'amphi' (around) + 'vasal' (from 'vas', vessel). Describes an arrangement where tissue surrounds water-conducting vessels on all sides.
Amphivasal bundles are like sophisticated plumbing where nutrients flow both inward and outward, surrounding the water pipes—it's an efficient design found in ferns and some other plants!
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