IO 



ILLUSTRATED TERMS. 



A Spike is like a raceme, only the flowers are sessile. 

 (Fig. 31.) 



A Catkin or Ament is a scaly sort of spike in which the 

 flowers are without petals. Staminate Catkin, (Fig. 32.) Pis- 

 tillate Catkin, (Fig. 33.) 



A Head or Capitulum is a short, dense spike that is glob- 

 ular in form. (Fig. 34.) 



fig. 25. 



fig. 26. 



fig. 27. 



fig. 28. 



A Corymb is like a raceme, but the lower pedicels are 

 elongated so that the flowers all reach about the same height. 

 ( Fi g. 35.) 



An Umbel is like a corymb, only the pedicels branch from 

 the same central point, suggesting the ribs of an umbrella. It 

 may be simple or compound. (Fig. 36.) 



A Cyme is a flat-topped flower-cluster, differing from an 

 umbel in that its innermost flowers are the first to open. 

 (Fig. 37.) 



Bracts are the modified leaves of an inflorescence, or those 

 that are under a flower. Usually they are green and of differ- 

 ent size and shape than the rest of the foliage ; sometimes, 

 however, they are highly-coloured and petal-like. 



Many trees bear both staminate and pistillate blossoms which 

 are often separate. 



