wood ray

(redirected from xylem 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.
References in periodicals archive ?
Fink investigated the formation of abnormally large xylem rays in both hardwoods and softwoods and found that these structures were associated with adventitious root primordia.
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.
Furthermore, most genera have multiseriate xylem rays and varying amounts of axial parenchyma.