352 



MISC. PUBLICATION 200, U. S. DEPT. OF AGRICULTURE 



in the lower whorls, the longer 5 to 

 10 cm. long, branching above the mid- 

 dle; glumes 2.5 to 3 mm. long; lem- 

 ma l.o mm. long, awnless; palea about 

 0.5 mm. long. % — Marshes, bogs, 

 and wet meadows, Montana to Brit- 

 ish Columbia, south to Wyoming 

 and California. 



35. Agrostis canina L. Velvet 

 bent. (Fig. 493.) Culms tufted, 30 

 to 50 cm. tall; blades mostly short 

 and narrow, those of the culm 3 to 

 6 cm. long, usually not more than 2 

 mm. wide; panicle loose and spread- 

 ing, mostly 5 to 10 cm. long; glumes 

 equal, acute, 2 mm. long, the lower 

 minutely scabrous on the keel; lem- 

 ma a little shorter than the glumes, 

 awned about the middle, the awn 

 exserted, bent; callus minutely hairy; 

 palea minute. % — Meadows and 

 open ground, Newfoundland to Que- 

 bec, south to Delaware, West Vir- 

 ginia, Tennessee, and Michigan; pos- 



Figl'RE 490. — Agrostis idahoensis. Panicle, X 1 : 

 glumes and floret, X 5. (Chase 5040, Idaho.) 



Figure 491. — A, Agrostis perennans. Panicle, X 1; glumes and floret, X 5. (Millspaugh 53, W. Va.) B, A. 

 altissima. Glumes and two views of floret, X 5. (A. Gray, N. J., in Trinius Herb.) 



