GRASSES OF SOWA. 



DESCRIPTION. 



Green Fox Tail. An 

 erect, glabrous, caespitose an- 

 nual, ^ to j feet (2-g dm.) 

 high, with short, lanceolate 

 leaves and dense, cylindrical 

 spike- like, green panicles i to 

 4 inches (2-10 cm.) long. 

 Culms usually much branched 

 at the base, glabrous ; nodes 

 smooth; leaf-blades 2 to 10 

 inches (.5-2.5 dm.) long, 2 

 to 5 lines (4- 10 mm.) wide, 

 long-acuminate, slightly scab- 

 rous on both sides; setae slen- 

 der, strict, spreading, an- 

 trorsely scabrous, 5 to 7J- 

 lines (1-1.5 cm.) long, green 

 or" rarely purplish. Spikelets 

 about 1 line (2 mm.) long; 

 second and third glumes five- 

 nerved, equalling the spike- 

 let; flowering glume ellipti- 

 cal, rounded at the apex, fine- 

 ly and faintly* transversely 

 wrinkled below, or only 

 striate and pitted. In waste 

 . , places and cultivated grounds 



Fig. 63. Setaria viridis. a. spikelet with r ° 



bristles ; 6,c,spikelets with glume, bristles removed; throughout North America. 

 ^flowering glume. (Div. of Agros. U. S. Dept. ^ tQ September< 



Fox tail grass is abundant in all parts of the state, even-where a 

 pernicious weed in cultivated fields. 



DISTRIBUTION. 



Iowa. 28 Des Moines, 1007 Manchester, 268 Clinton, Wheat- 

 land (Hall); Dakota City, Eagle Grove, Elmore, Minn., Minnesota- 

 Iowa line, Carroll, 1023 Kossuth County, Webster City, Jefferson, 

 Council Bluffs, Carnarvon, Dakota City, Sioux City, 2261 Des 

 Moines, 2220 Webster City, Muscatine, Des Moines, Mason City 

 (Pammel) ; Anus (Zmunt, Stewart, Fairfield, C. A. Wilson, Ketterer, 

 Hitchcock, Weaver, Ball, Sirrine) ; 3285 Steamboat Rock (Miss 



