640 



BOTANY 



PART II 



FIG. 647. Sassafras officinale. ( nat. size. After BERG and SCHMIDT.) 1, Male inflorescences on 

 a still leafless branch. 2, Fruits on a leafy shoot. 3, Male flower, k, Female flower. 5, 6, 

 Closed stamens of the two outer whorls. 7, Opened stamen of the innermost whorl. 8, Ovary 

 showing the style and the ovule. 



superior, unilocular. Placentas on the 

 united margins of the carpels, project- 

 ing more or less into the cavity (Fig. 

 651). Stigmas commisural, i.e. situated 

 immediately over the sutures. Dehis- 

 cence of the fruit by separation of the 

 middle portions of the carpels from the 

 persistent placentas. 



Family 1. Papaveraceae. This family con- 

 nects the order to the Polycarpicae by such 

 characters as the presence of laticiferous tubes 



FIG. 648. Floral diagram of Persea. 

 (After EICHLER.) 



