LEGUMINOSAE (PULSE FAMILY) 243 



leaves ; the corolla, a little 

 less than a half-inch long, 

 yellowish white with narrow 

 standard exceeding the wings 

 and blunt keel. Pods about 

 a half-inch long, two- to six- 

 seeded, brown, bur-like, bris- 

 tling all over with short, hooked 

 prickles, making fast to almost 

 anything at a touch and widely 

 distributed by animal trans- 

 portation. (Fig. 173.) 



Means of control 



Prevent seed development 

 and distribution by repeated 

 cutting, beginning as soon as 

 the first flowers wither. In 

 order to kill the perennial FIG. 173. Wild Liquorice (Glycyrrhiza 

 rootstocks, the land requires lepidota). x J. 



to be kept under very thorough cultivation for three successive 

 years, giving the weed "no chance to see daylight" throughout 

 each growing season. Increased returns from the crops will repay 

 extra tillage. 



HOARY TICK-TREFOIL 



Desmbdium canescens, DC. 

 (Meibbmia canescens, Ktze.) 



Other English names: Seed Ticks, Wool Ticks. 



Native. Perennial. Propagates by seeds. 



Time of bloom: June to September. 



Seed-time: August to November. 



Range: New England and Ontario to Minnesota and Nebraska, 



southward to Florida, Louisiana, and Texas. 

 Habitat : Rich, moist soil ; borders of fields and woods, roadsides, 



and waste places. 



To the wool-grower this is one of the most vexatious weeds 

 that grow, for its "ticks" are glutinous as well as bristly-hooked, 



