COLLEGE BOTANY 



If the sepals are independemt of each, other, it is polysepalous ; 

 but if the edges, are united, it is gamosepalous. If the petals are 

 independent of each other, it is polypetalousj but if the edges axe 

 united, it is gamopetalous. If the stamens are united into one 



Fig. 68. — Types of inflorescence; (a) raceme, (6) panicle, (c) corymb, (d) umbel, (c) spike, 

 (/) bead, (ff) spadix, (h) catkin, (il cyme, 0') scorpioid cyme. 



group, it is moymdelphous (one brotherhood) ; but if united into 

 two groups, it is diadelphous (two brotherhoods). 



Specialization of the Flower. — We have previously called 

 attention to the fact that the ilower is a shortened stera sur- 

 mounted by specialized leaves which constitute its various parts. 



