88 



COLLEGE BOTANY 



If the sepals are independent 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 polypetalous; but if the edges are 

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



j 



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

 (/) bead, (g) spadix, (h) catkin, (i> cyme, (j) scorpioid cyme. 



group, it is monadelphous (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 flower is a shortened stem sur- 

 mounted by specialized leaves which constitute its various parts. 



