CLASSIFICATION OF ANGIOSPERMS. 551 



and Paraguay; Dicentra pusilla of Japan and several species of 

 corydalis. The tubers of squirrel corn or corydalis (Bicuculla 

 canadensis) contain the alkaloidal corydaline. 



FIG. 309. Celandine (Chelidonium majus),' a biennial herb, with pinnately divided 

 leaves, and terminal clusters of small, yellow flowers. The plant has an orange-colored 

 latex. After Brown. 



b. CRUCIFEM: OR MUSTARD FAMILY. These are 



herbaceous plants with characteristic flowers and fruits. The 

 flowers have four deciduous sepals, four petals which are more or 

 less spreading and clawed at the base, and six stamens which are 

 tetradynamous (Fig. 280, B). The fruit is a 2-celled silique or 



