290 



DICOTYLEDONS. 



pushing its way up between the anthers brushes off some of the pollen and 

 bears it aloft, where it becomes attached to visiting insects. 



The lobelia family is related to the bell-flower family, and contains the 

 cardinal-flower, great lobelia, and others. 



AGGREGATyE. 



553. 



Lesson XX. The composite family (compositse). — In 



all the composites, the flowers 

 are grouped (aggregated) into 

 " heads," as in the sunflower, 

 where each head is made up of 

 a great many flowers crowded 

 closely together on a widened 

 receptacle. The family is a 

 large one, and is divided into 

 several sections according to 

 the kinds of flowers and the 

 different ways in which they 

 are combined in the head. In 

 the asters there is one common 

 type illustrated in fig. 391 by 

 the Aster novce-anglicB. In the 

 aster, as is well shown in the 

 figures, the head is composed 

 of two kinds of flowers, the 



I'lg. 391- 

 Aster novae-anglia;. 



Fig. iqi. 

 Head of flowers of Aster nova;-anglise. 



