112 



LEAF-ARRANGEMENT. 



the other hand, the Beech leaves would leave con- 

 siderable interspaces. Or let us in the same way 

 transpose those of the Spanish Chestnut ( Castaned) 

 and those of Acer platanoides, a species of Maple. 

 I have taken specimens in which the six terminal 



FIG. 30. LEAVES OF CASTANEA. 



leaves of a shoot of the two species occupy approxi- 

 mately the same area. Figs. 23 and 29 show the 

 leaves in their natural position, those of the Span- 

 ish Chestnut lying along the stalk, while those of 

 the Maple are ranged around it. In both cases 

 it will be seen that there is practically no over- 

 lapping and very little waste of space. In the 

 Spanish Chestnut the stalks are just long enough 



