392 



BOTANY OF CROP PLANTS 



tubular and with its lobes imbricated in the bud; the corolla 

 has five distinct petals; there are numerous stamens. In a 





Fig. 162. — Floral diagram of Prunus. 



^nm oj receptacle 

 st^le 



Fig. 163. — Sour cherry (Prunus cerasus)'. Median lengthwise section of 



flower. 



longitudinal section (Fig. 163) of the drupaceous flower, it is 

 seen that the ovary is placed down within a cup commonly 



