CHAP. I.] 



PLANT ARCHITECTURE. 



19 



Fig. 3. Maize, or Indian corn (Zea mays). One of the grasses 

 having a cluster of male or staminate flowers terminating the stem, 

 lower down is a cluster of female or pistillate flowers having every 

 part except the long tassel of stigmas protected by sheathing leaves 

 or bracts. The pollen is blown from the male to the female flower by 

 the wind. 



cellular individuals, or those consisting of a few cells 

 only, no great progress was made, and such forms, as a 

 rule, still remain inhabitants of water ; yet if, as in the 



