19 



Fig. 13. ANDROPOGON SCOPARIUS Michx. Fl. Bor. Am. 1 : 87. 1803. 

 LITTLE BLUE-STEM.— A rather slender perennial 4-12 dm. (lo-4°) high, the 

 solitary racemes 2.5-5 cm. (l'-2') long, terminating the culms and branches. 

 Sessile spikelet about 6 mm. (3") long, the pedicellate spikelet 2-3 mm. (l"-li") 

 long; awn 10-15 mm. (5"-8") long.— Dry fields and borders of woods, New 

 Brunswick westward to the Saskatchewan, southward to Florida, Texas, and 

 southern California. (Mexico.) July to October. 



Yar. FLEXiLis. (Bosc.) Hack, in DC. Monog. Phan. 6 : 384. 1889, has long- 

 exserted racemes; spikelets 5.5 mm. (2^") long; var. cesia Hack. 1. c. has the 

 sheaths and spathes pruinose; var. simplicior Hack. 1. c. has the racemes 

 usually solitary at each node; spikelets 8 mm. (4") long. 



This grass often forms a large proportion of the so-called prairie hay of the 

 West. 



