120 



FLOWER-BRANCHES 



183. An uiubel-like cyme. Geranium. 



Review. What is the homology 

 that flowers are often borne in 

 clusters? Explain what may be 

 meant by a solitary flower. "What 

 are the two types of flower- clus- 

 ters? What are corymbose clus- 

 ters? Define raceme. Spike. 

 Head and anthodium. Catkin. 

 Panicle. Umbel. Umbellefc. 

 Corymb. What are cymose clus- 

 ters? What is a cyme? Glome- 

 rule? Contrast indeterminate and 

 determinate modes of branching. 

 Explain mixed clusters. What 

 is a thyrse? What is meant by 

 the word inflorescence? Define 

 peduncle, pedicel, and scape. 



Note. In the study of flower- 

 clusters, it is well to select first 



a peduncle ; also the 

 general stem of a floiver- 

 cluster. The stem of 

 the individual flower in 

 a cluster is a pedicel. 



248. In the so-called 

 stemless plants (37) the 

 peduncle may arise di- 

 rectly from the ground, 

 or crown of the plant, 

 as in dandelion, hya- 

 cinth (Fig. 174), gar- 

 den daisy (Fig. 185). 

 This hind of peduncle 

 is called a scape. A 

 scape may bear one or 

 many flowers. It has 

 no foliage leaves, but it 

 may have bracts. 



of flower-branches? How is it 



184. Thyrse of horse-chestn 



