15 



Fig. 311. Andropogon hirtiflorus oligostachyus (Chapm.) 

 Hack, in D. C. Mono<r. I'liau. 6 : o72. {Andropo(jon oru/OKldchi/us 

 Chaimi.) A slender i>creiinial (5 to 12 dm. high, with narrow 

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

 G to 7 mm. long with the lirst gluiin' (In hirsute, and the deeply 

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

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

 September. 



