POLLINATION OF STRAWBERRIES 207 



In the blackberries aud dewberries, the receptacle forms a part 

 of the fruit, but in the raspberries the ovaries are separated 

 from the receptacle. 



Strawberries (Fig. 132) belong to the genus Fragaria and 

 have flowers very similar to the members of the genus lluhus, but 



Fio. 131. — Blackberry, a form of aggregate fruit. 



fruit consists primarily of a large fleshy receptacle carrying 

 numerous naked akciios on its surface. 



Pollination of Strawberries. — The flowers of some varieties 

 of strawl>erries have very little or no pollen. The two types 

 of blossoms, with aud without stamens, arc shown in Fig. 133. 

 Growers are unable to obtain fruit from the imperfect va- 



