MANUAL OF THE GRASSES OF THE UNITED STATES 375 



and low open ground, Quebec and Maine to Montana, south to 

 North Carolina, Indiana, Kansas, New Mexico, and Arizona (fig. 

 777). Muhlenbergia foliosa var. sETiGLUMis (S. Wats.) Scribn. 

 Lemmas awned, the awn 4 to 10 mm long. % -About the same 

 range as the species ; also Wash- 

 ington to northern California 

 and Nevada. 



30. Muhlenbergia schreberi 

 Gmel. Nimblewill. (Fig. 

 778, A) Culms slender, 

 branching, spreading and de- 

 cumbent at base, usually root- 

 ing at the lower nodes, but not 



Figure 770.— Muhlenbergia mexicana. Plant, X 1; 

 glumes and floret, X 10. (V. H. Chase 1166, 111.) 



Figure 771.— Distribution of 

 Muhlenbergia mexicana. 



forming definite creeping rhi- 

 zomes, the flowering branches 



ascending, 10 to 30 cm long; 



blades flat, mostly less than 5 



cm long, and 2 to 4 mm wide; 



panicles terminal and axillary, 



slender, loosely flowered, lax, 



nodding, 5 to 15 cm long; 



glumes minute, the first often 



obsolete, the second rounded, 



0.1 to 0.2 mm long; lemma narrow, somewhat pubescent around the 



base, the body about 2 mm long, the slender awn 2 to 5 mm long. 

 94. — Damp shady places, New Hampshire to Wisconsin and 



eastern Nebraska, south to Florida and Texas; eastern Mexico (fig. 

 779). In spring and early summer the culms are short 

 and erect with spreading blades, the plants being very dif- 

 ferent in appearance from the flower- 

 ing phase of fall. Muhlenbergia 

 schreberi var. PALtJSTRis (Scribn.) 

 Scribn. Glumes developed, as much 

 as 1 mm long. 9J. — Washington, 

 D.C. 



31. Muhlenbergia curtisetosa 



(Scribn.) Bush. (Fig. 778, B.) A 



little-known form, differing from M. 



l Muhienbcrgia schreberi in having stouter culms, coarser panicles, the 



? a6r (Type* glumes evident, rarely as much as 2 mm long, the lemma 



2.5 to 3 mm long, the awn 1 to 2 mm long. 94 — - 



Illinois (Clinton), Missouri (Eagle Rock). It may be a hybrid. 

 32. Muhlenbergia andina (Nutt.) Hitc he. Foxtail muhly. (Fig. 



780.) Perennial, with numerous scaly rhizomes; culms erect or some- 



Figure 773.— Distribution of 

 Muhlenbergia glabriflora. 



