Vascular bundle

Vascular bundle [ Botany]
Also called: Fibrovascular bundle

Dictionary of botanic terminology - index of names

A vascular bundle is a compact strand of primary vascular plant tissue consisting essentially of xylem and phloem and surrounding tissues, occurring in stem, leaf and flower.

	In Cactaceae a clear ring of vascular tissue is on a cross section cut across the stem. This woody material also has a structural function and forms the supporting skeletons of many cacti. Left: Cylindropuntia timber (lignified vascular bundles)
		Cross section of a stem of Astrophytum myriostigma The whitish ring in the centre are vascular bundles.		Stele of Echinocactus grusonii whit cortical vascular bundles branching off from stele vascular bundles

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