actinostele

noun

ac·tin·o·stele | \ ak-ˈti-nə-ˌstēl also ˌak-tə-(ˌ)nō-ˈstē-lē\

plural -s

Definition of actinostele

: a vascular core (as in most roots and some stems) having the xylem and phloem in alternating or radial groups within a pericycle — compare stele

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