288' 



STATE BOARD OF AGRICULTURE. 



Fig. 17 (17). 



Old-Witch Grass. Tickle Grass. A 

 Tumble-weed. Panicum capillare L. An 

 erect, spreading, hairy, much-branched annual, 

 30-60 cm. high; bearing open panicles half the 

 length of the entire plant. The branches very 

 slender and rather stiff; the whole panicle when 

 mature, breaking from the plant and carried 

 for long distances by the wind. Native to 

 this country. 



Fig. 18 (IS). 



Switch Grass. Panicum virgatum L. The 

 stem smooth, wiry, erect, 90-150 cm. high, 

 usually forming large tufts, with creeping strong 

 root-stocks, long, flat leaves and ample spread- 

 ing panicles, sometimes 00 cm . long. Sandy soil , 

 usually along lakes and streams. Extensively 

 distributed in the United States and Mexico. 

 Rather ornamental, seldom much of a weed in 

 Michigan. 



