188 



WEED FLORA OF IOWA 



Fig. 107. White Sweet Clover (Melilotus alba). Common along roadsides. 

 (Photographed by Colburn.) 



The Farmer 's Review says regarding the plant : "In Minnesota, 

 Wisconsin, and Ohio there are laws against the plant known as 

 sweet clover. We fail to see why this plant should be singled out 

 and denominated as a weed. It certainly is not objectionable as a 

 cover for waste places, and is easily controlled where its presence is 

 not desired. ' ' 



Chemical Composition. — The chemical composition according to 

 the University of Wyoming is as follows.* 



•Bull. No. 70 compiled by Henry G. Knight, Frank E. Hepner, chemists, and 

 Aven Nelson, botanist ; Wyoming Experiment Station. 



