Sentence Examples with the word medullary ray

The cortical tissues gradually shrink and dry up, turning brown and black in patches or all over, and when at length the cambium and medullary ray tissues dry up the whole twig dies off.

The xylem parenchyma cells are connected, as are the medullary ray cells, with the tracheal elements by one-sided bordered pitsi.e.

The xylem and phloem parenchyma consist of living cells, fundamentally similar in most respects to the medullary ray cells, which sometimes replace them altogether.