FL O WER- CL US TERS 



1 6 1 



\ 



\ 



5 5 



FIG. 221. FORMS OF CENTRIPETAL FLOWER-CLUSTERS. 



i, raceme; 2, spike; 3, umbel; 4, head or anthodium; 5, corymb. 



FIG. 222. CENTRIPETAL INFLORESCENCE, continued. 



6, spadix; 7, compound umbel; 8, catkin. 



FIG. 223. CENTRIFUGAL INFLORESCENCE. 



i, cyme; 2, scirpioid raceme (or half cyme). 



