698 MISC. PUBLICATION 200, U. S. DEPT. OF AGRICULTURE 



yellow or purple, 1 to 3 times or even 6 times as long as the spikelet; 

 spikelets 2 to 2.5 or even 3 mm long. % — Open ground, pastures, 

 cultivated soil, salt marshes, and moist ground along the coast, 

 Massachusetts to Florida and Texas, in the interior north to West 



Figure 1562.— Setaria lutescens. Plant, X Y%, two views of spikelet, and floret, X 10. (Chase 2986, B.C.) 



Virginia, Illinois, and Kansas, west to California; tropical America 

 to Argentina and Chile (fig. 1565). 



Setaria nigrirostris (Nees) Dur. and Schinz. Perennial; resem- 

 bling S. lutescens but the dense spikelike racemes purple or dark 

 brown. % —Ballast, near Portland, Oreg.; South Africa. 



