338 



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



27. Agrostis bakeri Rydb. (Fig. 689.) Differing from A. ida~ 

 hoensis in the larger usually dark purple spikelets (about 2.5 mm long) 

 and in the less flexuous and divaricate panicle branches; lemma with 

 a delicate straight awn or awnless. % — Alpine meadows, rare, 



Figure 686 .— Agrostis hiemalis. Plant, X Vi, glumes and floret, X 5. (Deam 6514, Ind.) 



Colorado, Wyoming, Alberta, and Washington. The type has awned 

 spikelets. Awnless specimens referred to this species resemble A. 

 idahoensis but have larger spikelets. Probably a form of A. borealis. 

 28. Agrostis perennans (Walt.) Tuckerm. Autumn bent. (Fig. 

 690.) Culms erect or somewhat decumbent at base, varying from 



