322 



BOTANY. 



552. The general relations of the orders and sub-orders 

 of the Angiosperms as here understood may be indicated 

 by the accompanying diagram (Fig. 325). 



Fio. 225.— Diagram to illustrate the relationship of the orders and suh- 

 ordera of the Angiosperms. 



Class 15. ANOiosPERMa;. The Angiosperms. 



Spore-hearing leaves fcarpels) of the sporopliore folded so as to 

 enclose the ovules in a cavity, thus constituting a pistil ; seeds en- 

 closed. Species about 100,000. 



