How To Use Medullary ray In A Sentence

• A slice across the stem of a tree shows many different tissues with more or less technical names, bark and cambium, medullary rays, pith, and more or less specialised tissue; air-vessels, punctate vessels, woody fibres, liber fibres, scalariform vessels, and other more or less specialised tissues. The Beauties of Nature and the Wonders of the World We Live In
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• On reaching the root of another tree, the tips of the branched rhizomorph penetrate the living cortex, and grow forward in the plane of the cambium, sending off smaller ramifications into the medullary rays and (in the case of the pines, etc.) into the resin passages. Scientific American Supplement, No. 643, April 28, 1888
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• Now, _Polyporus dryadeus_ and _P. igniarius_ are such fungi; their hyphæ excrete a ferment which completely destroys the starch grains in the cells of the medullary rays of the oak, a tree very apt to be attacked by these two parasites, though _P. igniarius_, at any rate, attacks many other dicotyledonous trees as well. Scientific American Supplement, No. 643, April 28, 1888
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• The glomerular tufts were shrunken or necrotic and renal medullary rays were congested.
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