B. P. I.— 216. 



A NE^V TYPE OF RED CLOVER. 



INTRODUCTION. 



In the course of an investi<2;ation now in progjress on the hfe liistory, 

 seed production, and change of seed of medium red clover ( Trifolium 

 pratense), there has appeared a hairless Russian variety, new to the 

 United States, of such unusual promise as to make it seem desirable 

 to publish the observations thus far recorded concerning it. 



At the present time clover culture is carried on in a large, though 

 quite well-defined area of the United States, often called the clover 

 region, shown on the accompanying map (fig. 1). Ohio, Indiana, 



Fig. 1. — Map of the United States, showing locations of experiments (o), sources of seed ( + ), and 



general boundaries of the clover region. 



and Illinois are the most important clover-producing States of this 

 region, the boundaries of which may be defined about as follows : It 

 is limited on the north by the forty-fifth parallel of latitude ; on the 

 east by the Atlantic Ocean; on the south by the thirty-fifth parallel, 

 and on the west by the ninety-seventh meridian. These boundaries 

 do not, of course, mark the absolute limits of clover culture, and it is 

 almost unnecessary to say that there are large tracts within this 

 so-called clover region where attempts to grow red clover are not 



9 



5164— No. 95—06 2 



