176 INFLORESCENCE 



water hemlock and American angelica. An anthodium is the 

 compound inflorescence of the members of the daisy family 

 or composite . In ox-eyed daisy the outer modified leaves 

 are involucre scales and make up the involucre ; the peduncle 

 ends in the receptacle or compound torus which may be solid 

 or hollow, concave or convex, smooth, pitted or hairy. The 

 anthodium may be rayed, that is, it may have an outer circle 

 of ray flowers and a central mass of disc flowers as in ox- 

 eyed daisy ; or the anthodium may be discoid or without ray 

 flowers as in tansy. 



Determinate Inflorescence. A cyme is a determinate 

 inflorescence in which the terminal or central flower of each 

 cluster opens first, as in bouncing Betty. A compound cyme 

 is composed of several cymes as in mouse-ear and elder. A 

 cymose head or glomerule is a compact compound cyme, as 

 in flowering dogwood where the flowers are surrounded by 

 four large white or pink bracts. 



