lO 



ILLUSTRATED TERMS. 



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

 (Fig. 3 1.) 



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

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

 tillate Catkin, (Fig. ;^;^.) 



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

 ular in form. (Fig. 34.) 



^-T' 



FIG. 25. 



FIG. 26. 



FIG. 27. 



FIG. 28. 



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

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



U'l^- 35-) 



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

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

 may be simple or compoimd. (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. 



