CLASSIFICATION OF ANGIOSPERMS. 



715 



however, are white or purplish, and the pappus consists of a ring 

 or scale. The root is official. 



Matricaria Chamomilla (German chamomile) is an annual, 

 diffusely branched herb, with pinnately divided leaves, consisting 

 of few, linear segments. The flowers are official (Figs. 228, 

 394). 



FIG. 394. A single plant of Matricaria Chamomilla, showing nnely divided leaves and 

 numerous composite flowers. After Newcomb. 



Arnica montana is a perennial herb with small rhizome; 

 nearly simple stem ; opposite, somewhat connate, entire, spatulate, 

 hairy leaves, and yellow flowers in large heads with long peduncles. 

 The flowers are official. 



Arctium Lappa (Burdock) is a coarse, branched, biennial or 



