CLASSIFICATION OF ANGIOSPERMS. 



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FIG. 311. Pitcher Plant (Sarracenia pur pur ea). The plant grows in peat bogs, and 

 the pitcher-shaped leaves are usually half filled with water and serve as a trap for insects, 

 which are finally digested and furnish the plant with nitrogenous food. The flowers are 

 single on a naked scape and of a deep purple color, the petals being arched over the style. 

 Many species of Sarracenia are prized by horticulturists because of their odd trumpet- 

 shaped leaves. After Troth. 



acid has been found in D. longifolia, a sundew common in the 

 United States as well as in Europe and Asia, (c) The family 

 NEPENTHACE^E contains the single genus Nepenthes, several spe- 



