THE LEAF 



you perceive any correspondence between the manner of 

 lobing or indentation of their margins, and the direction 

 of the veins ? To what class would you refer each one ? 

 The lobes themselves may be variously cut, as in the 



60. Pinnately lobed leaf of an oak. 



61. Palmately lobed leaf of grape. 



fennel and rose geranium, thus giving rise to twice-cleft, 

 thrice-cleft, four-cleft, or even still more intricately divided 

 leaves. Where the divisions are very deep it may some- 

 times be a little puzzling to decide whether they are not 



62. Pinnately divided leaf 

 of a buttercup. 



63. Palmately parted leaf of tall butter- 

 cups. 



separate leaflets, but if there is the merest thread of green 

 connecting the segments, as in Figures 62 and 63, it is con- 

 sidered a simple lobed leaf. 



45. Compound Leaves. Compare with the specimens 

 just examined a leaf of horse-chestnut, clover, or Virginia 



