JtlSSIEUS NATURAL SYSTEM. 



27. Here we have as many as eighteen orders, from 

 the forty-eighth to the sixty-fifth ; \iz.primulacecE, utri- 

 cularice, pediculares, orobanchece, and others. 



CLASS IX. -PEKICOROLLE/E. 



28. The pericorolleae are characterized by a calyx 

 of one leaf, sometimes deeply divided, bearing the 

 corolla, which is monopetalous, though occasionally so 

 deeply divided as to become polypetalous. 



The corolla is regular, rarely irregular; stamens inserted either 

 into the corolla or calyx, definite, seldom indefinite ; gennen simple, 

 superior or inferior ; style generally single ; stigma rarely divided, 

 t'ruit pulpy or capsular, of one or many seeds. The insertion of the 

 corolla, characteristic of this class is not very evident, and in some 

 plants, indeed, is denied to exist. 



29. There are eight orders of pericorollea;, from the 



