115 



Fig. 109. MUHLENBERGIA SCHAFFNERI Fourn. Mex. PI. 2 : 85. 1881J— 

 A low, csespitose, branching annual 2-10 cm. (l'-4') high, with short leaves 

 and simple, spike-like panicles. Spikelets (o, b) sessile or nearly so; empty 

 glumes scabrous, slightly unequal, the first more or less deeply 2-toothed, 

 the second l-nerved and short-awned, about the length of the flowering 

 glume (c, (/); flowering glume glabrous or thinly hairy below, about 2 mm. 

 (1") long; awn 1-7 mm. {i"-Sk") long. The short-awned or nearly awnless form 

 is MUHLENBERGiA DEPAUPERATA Scrlbu. Bot. Gaz. 9 : 187. 1884.— " Dry, gravelly 

 patches of thin soil." mountains of Arizona and New Mexico. (Mexico.) Sep- 

 tember. 



1 Title-page date is 1886; advance sheets issued as early as 1881. See Bibli 

 ography in American Grasses III. 



