MANUAL OF THE GRASSES OF THE UNITED STATES 



339 



weak and lax to relatively stout and tall, 30 to 100 cm tall; leaves 

 rather numerous, the blades lax or stiffly upright, corresponding to the 



FIGURE 687. Agrostis idahoensis. Panicle, X 1; glumes and floret, X 5. (Chase 5162, Idaho.) 



culms, 1 to 6 mm wide, 10 to 20 cm long; panicle pale, open, oblong, 

 the branches ascending, branching again 

 about the middle; spikelets 2 to 3 mm long; 



glumes nearly equal, 



acute or acuminate; 



lemma 1.5 to 2 mm 



long, awnless (rarely 



awned); palea obso- 

 lete or nearly so. 91 



Open ground, old 



fields, open woods, 



in rather dry soil 



from sea level to the tops of the mountains, FlGURE m ^ Agrostis bakerL Pan- 

 no wering in late summer or autumn, Quebec icle > x l > glumes and floret, x 5. 

 to Minnesota, south to Florida and eastern 

 Texas (fig. 691). In dry open ground the culms are erect and rather 



FIGURE 688. Distribution of 

 Agrostis idahoensis. 



FIGURE 690. Agrostis perennans. Panicle, X 1; glumes and floret, X 5. (Millspaugh 53, W.Va.) 



stout; in shady places the plants are lax and the panicle lax with 

 divaricate branchlets. 



