Carpenter, William Benjamin, 1813-1885 · Philadelphia : Blakiston · leaf 490
direction of the axis; but there isone remarkable exception,-—that, namely, which is afforded by the medullary rays of Exogenous stems (§ 370), whose cells aregreatly elongated in the horizontal direction (Fig. 259, a), theirgrowth being from the centre of the stem towards its circumference.It is…
Microscopy · Biology
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