PABTICnLAB, TYPES OF FLOWERS, CONTINUED 211 



and westward, and is often cultivated upon porches 

 and arbors for the shade of its great, dense 



Pig. 204. 



Flower of dutchman's 

 pipe. Exterior view. 



Fig. 205. 



Dutchman's pipe. Longi- 

 tudinal section. 



leaves. The flower is most peculiar. The ovary 

 is at a, and in this respect it differs radically 

 from both the pea and the violet, in which the 

 ovary is superior. The placentae are axile. These 

 are most important points in respect to the kinship 

 of plants, and at once suggest a wide separation 



