BOTANY. 



When both staminate and pistillate flowers grow upon 

 the same plant (Fig. 151), it is said to be monoecious. 



When staminate and pistillate flowers grow upon sep- 

 arate plants (Figs. 153 and 154), such plants are said to be 



FIG. 3152. Pistillate Flower, 

 from Catkin (Fig. 153). 



FIG. 151. A Monoecious Planf. 



FIG. 153. Female Catkin of a Dioecious 

 Plant. 



di&cious. Fig. 152 represents a pistillate flower from the 

 female catkin (Fig. 153). Fig. 155 represents a staminate 

 flower from the male catkin (Fig. 154). These catkins 

 grow upon different trees ; so the willow from which they 

 were taken is dioecious. 



