INFLORESCENCE. 



Plate XXI 



Oeneral subject Name each figure. Where are the staminate flowers In 

 fig. 2 the pistillate flower ? Difference between figs. 5 and 8 ? What kind of 

 inflorescence at flgs. 9 and 10? Is there any perfect verticil in this plate? 

 What is the arrangement at flg. 6 ? What two Forms of the Head and in 

 what plants ? Is the Umbel at flg. 5 simple, or compound ? What are its sub- 

 divisions called? What arrangement at flg. 11? Which of these figures de- 

 velope their flowers centripetally which centrifugally ? 



