LEGUMINOSAE (PULSE FAMILY) 



231 



YELLOW OR HOP CLOVER 



Trifblium agrarium, L. 



Introduced. Annual. Propagates by seeds. 

 Time of bloom: June to August. 

 Seed-time: July to September. 



Range: Nova Scotia and Ontario to Michigan and Iowa, south- 

 ward to Virginia. 

 Habitat: Meadows, roadsides, and waste places. 



Were there no larger and better Clovers, this plant could not be 

 characterized as a weed ; but, as it is, the places that it holds might 

 be better occupied, and its seeds are a frequent 

 impurity among those of its larger relatives. 

 Stems smooth, slender, branching, usually erect, 

 six to fifteen inches in height. Leaves light 

 green, on petioles but little longer than the 

 cohering, narrow, lance-shaped stipules ; the leaf- 

 lets all grow from the same point, and are sessile, 

 about a half-inch in length, obovate or oblong, 

 and edged with very minute teeth. Heads 

 axillary on peduncles much longer than the 

 leaves ; they are small, oblong, rounded, densely 

 crowded, golden yellow, the flowers having rather 

 narrow, incurled standards and short, blunt keels ; 

 the corollas are persistent and each flower turns 

 downward on the stalk as it is fertilized, finally 

 becoming dry and brown, the withered heads 

 resembling small dried hops. The pods are one- 

 seeded. (Fig. 164.) 



FIG. 164. Yel- 

 low or Hop Clover 

 (Trifolium agra- 

 rium). X \. 



Means of control 



Prevent seed development and distribution by early and frequent 

 cutting. Cultivate and reseed the ground with larger and better 

 forage plants. 



LOW HOP CLOVER 



Trifdlium proctimbens, L. 



Introduced. Annual. Propagates by seeds. 

 Time of bloom : May to September. 



