CHAPTER II 



LEAVES 



8. Arrangement. Leaves appear upon the stems at 

 definite regions called nodes (joints); and this jointed 

 structure of the stem is one of its characteristic features, 

 although it is much more conspicuous in some plants than 



FIG. 1. Leaf arrangement: A, spiral or alternate .eaves; B, opposite (cyclic) 

 leaves; C, whorled (cyclic) leaves. After GRAY. 



in others. In certain plants only one leaf appears at each 

 node; and if an imaginary line be drawn connecting the 

 points on the nodes at which successive leaves appear, it 



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