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. Nimble will. (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. 

 01 — 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. Muhlexbergia 

 schreberi var. palustris (Scribn.) 

 Scribn. Glumes developed, as much 

 as 1 mm long. % — Washington, 

 D.C. 



31. Muhlenbergia curtisetosa 

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

 little-known form, differing from M. 



schreberi in having stouter culms, coarser panicles, the 

 glumes evident, rarely as much as 2 mm long, the lemma 

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



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

 32. Muhlenbergia andina (Nutt.) Hitehc. Foxtail muhly. (Fig. 



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



Figure 773.— Distribution of 

 Muhlenbergia glabriflora. 



Figure 772.— 

 Muhlenbergia 

 glabriflora, X 

 10. (Type.) 



