208 



IMPORTANT FAMILIES OF PLANTS 



rieties (not having pollen) unless those with perfect flowers are 

 grown near them. The two types may be planted together, with 

 at least one row of a perfect-flowered sort for three or four rows 

 of the imperfect ones, and these must be such as blossom at 

 the same season. 



1 



FIG. 132. Strawberry. 



The perfect-flowered varieties will produce fruit when 

 planted alone. They are more popular than the others. Two 

 varieties with imperfect flowers are Warfield and Haverland. 

 Crescent and Glen Mary bear very little pollen. Over fifty 

 perfect-flowered varieties are known. Some of these are Dun- 

 lap, Aroma, Gandy and Excelsior. 



