Carpenter, William Benjamin, 1813-1885 · Philadelphia : Blakiston · leaf 508
Diagram of tlie first formationof an Exogenous Stem;—a, Pith:b b, Bark; c <*, plates of cellulartissue (Medullar Kays) left be-tween the Woody Bundles d d. … b 0 v- b Transverse Section of Stem of Clematis:—a. pith, b,b, b, woody bundles; c, c, c, medullary rays. appearance of division into concentric rings, the number ofwhich varies with the age of the tree (Fig. 254). The compositionof the several rings, which are the sections of so many…
Microscopy · Biology
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