XIII 



FLOWER AND INFLORESCENCES 



'75 



differs from the dichotomous cyme in which the lateral buds 

 produce branches on both sides of the apex. In the glomerule 

 the branching brings the flowers to the same level and appears 

 to form a head. 



Bracts. The bracts are borne upon the inflorescence (p. 46). 

 They are leaves in the axils of which the flowers are produced. 



FIG. 179. Two views of in- 

 volucre of Daisy. R, ray 

 flowers ; M, bracts of 

 involucre. 



There may be one 



large bract only, 



which surrounds 



the inflorescence as 



the spathe of the 



Arum. (Fig. 173.) 



In some cases these 



bracts are brightly 



coloured. Very 



small bracts are 



often found at the base of each pedicel, as in the Hyacinth, 



when they are termed bracteoles. 



Involucre. When the bracts are arranged around the 

 flowers in a whorl, as in the Daisy and Dandelion, they form an 

 involucre. (Fig. 179.) The bracts of the involucre may be 

 leafy, scaly, or partly leafy and scaly. They may be imbricated 

 like the tiles on a house, or simple. 



The Anemone has an involucre of three bracts, just below the 

 flower. (Fig. 180.) 



FIG. 180. A, Anemone ; B, involucre ; M, M, M, 

 bracts of involucre ; F, flower. 



