FAMILIES OF FLOWEEING PLANTS. 



253 



lies, we are ready to recognize the beautiful natural relationships to be 

 found in botany as in other branches of biology. If these somewhat 

 discursive papers have proved serviceable in making the flowering-plant 

 relationships more clear, the author feels that his work has fulfilled its 



mission. 



P2G. 225. 



The water marigold, an aquatic Bidens {B. Beckii). 

 Britton and Brown, 111. Fl. Northeast. U. S. 



Afte? 



Fig. 226. Bachelor's-button {Centaurea Cyanus). After Britton and Brown, 



111. Fl. Northeast. U. S. 



THE END. 



