15 



Fig. 311. Andropogon hirtiflorus oligostachyus (Chapm.) 

 Hack, in D. C. Monog. PL an. 6 : 372. (Andropogon oligostachyus 

 CLapm.) A slender perennial 6 to 12 dm. LigL, witL narrow 

 leaves and slender racemes 5 to 6 cm. long. Sessile spikelet (a) 

 6 to 7 mm. long witL tLe first glume (&) Lirsute, and tLe deeply 

 cleft fourtL glume (e) bearing a slender, geniculate awn about 15 

 mm, long. Florida, Arizona. [St. Domingo and Mexico.] July- 

 September. 



