[Chap. XXXIl 



FLOWERS, FRUITS, AND SEEDS 



359 



flowers have stamens but no pistils, and other flowers on the same plant 

 or in the same inflorescence have pistils but no stamens. These flowers 

 are termed staminate and pistillate, respectively. In the inflorescence of 

 jack-in-the-pulpit, Amorphophallus (Fig. 156), and other aroids stami- 



FiG. 157. Flowers of the corn plant. The staminate flowers are borne in a 

 large open panicle (tassel). The pistillate flowers are arranged in a spike (ear), 

 enclosed by sheathing leaves. The onlv part of a pistillate flower exposed to the 

 outer air is the end of the long style (silk). Courtesy of \\'orld Book Co. 



nate flowers occur on the upper part and pistillate flowers on the lower 

 part of the same floral axis. Maize, or Indian corn, has staminate flowers 

 on "tassels" and pistillate flowers on "ears" ( Fig. 157 ) , but the environ- 

 ment may greatlv affect this arrangement. 



Many trees of Christmas holly, willow, and poplar have only staminate 



