wood ray

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Related to xylem ray: cork cambium

wood ray

[′wu̇d ‚rā]
(botany)
A vascular ray consisting of a radial row of parenchyma cells in secondary xylem. Also known as xylem ray.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The xylem rays of eucalypts are almost exclusively 1 -3-seriate (3,7,8) but may reach 5 cells wide in rare specimens.
Softwoods are relatively homogenous in structure [13] and consists primarily of tracheids, uniseriate xylem rays, and in some genera, it has been composed by axial parenchyma and epithelial cells surrounding resin canals.
Although the pathways of sugars from phloem into secondary xylem have not been studied sufficiently, the phloem and xylem rays represent, by default, the most obvious and potentially most efficient route for this flow.