428 THE EVOLUTION OF OUR NATIVE FRUITS 



field strawberry in the improvement of the garden 

 varieties has evidently been very small. 



A full discussion of this strawberry evolution is 

 made in Essay XXV., "Survival of the Unlike," and it 

 is, therefore, unnecessary to pursue the subject here. 



/ 



Fig. 113. Plant of the common wild strawberry, showing how 

 the runners form before the fruit is matured. 



It may be said, however, that there are three leading 

 groups or types of strawberries native to North Amer- 

 ica, the Scarlet or Virginian group, the Vesca or Old 



