130 



liJSSSONS WITB PLANTS 



(Figs. 123-126) are known to have come from one 

 type of ancestor, is there not reason for inquiring 

 if the ancestors of these very unlike plants may 

 not have been more closely related than the 



Fig. 129. 

 Leaf of common marguerite. 



Fig. 130. 

 Leaf of blue-leaved marguerite. 



present forms are ? Or, similar types or directions 

 of variation suggest community of origin. 



Suggestions. — Is there variation in the veiniug and serration, or 

 dentation, of leaves on the same plant 1 How great may be the varia- 

 tion in size ? Bo all the leaves on any plant mature at the same 

 time T Is there always the same number of leaflets in the same kind 

 of compound leaves ? The pupil should examine the honey locust 

 and Kentucky coffee-tree; and he may have searched for "four-leaved 

 clover." 



