RvDBERG : Rocky Mountain flora 609 



grows ill alpine situations of Colorado, at an altitude of 3000— 

 4000 meters, and is found apparently also in California. 



Colorado: Cameron Pass, July 13, 1869, C. F. Baker (type) ; 

 near Pagosa Peak, 1899, Baker ij6 ; "Colorado," E. Blall 12; 

 Mt. Lincoln, yir?//// Wolf; Tennessee Pass, 1893, De Alton Saunders ; 

 Mt. Ouray, 1896, F. E. Clements 210^2; near Manitou, 1896, 

 Clements ^6. 



Californla : Bolander jo66. 



Elymus strigosus Rydb. sp. nov. 



A cespitose perennial ; sheaths 3-8 cm. long, striate, glabrous 

 or minutely puberulent, with distinct auricles at the mouth; ligules 

 very short, truncate, i mm. long or less; blades 1—2 dm. long, 

 about 3 mm. wide, flat or involute, scabrous ; culm 5—7 dm. high ; 

 spike 1-1.5 dm. long; spikelets i or 2 at each node; empty glumes 

 linear-subulate, 7—9 mm. long, very scabrous ; flowering glumes 

 lanceolate, scabrous-strigose, awn-pointed or short-awned, without 

 the awn about i cm. long. 



This is closely related to E. ambiguits, but distinguished by 

 the scabrous strigose flowering glumes, the more scabrous empty 

 glumes and the narrower leaves. 



Colorado : Near Boulder, at an altitude of 2300 meters, July 

 31,1886, C. W. Letterman jjj (type, labeled Agropyi'um dasy- 

 stachynni), 



Wyoming : Naked shale slopes. Point of Rocks, Sweetwater 

 County, 1900, Avcn Nelson 71 ji (labeled Elymns salinns). 



Elymus villiflorus Rydb. sp. nov. 



A cespitose perennial ; sheaths 4-10 cm. long, striate, gla- 

 brous ; blades 1—2 dm. long, about 2 mm. wide, strongly involute, 

 scabrous above ; culm 4—6 dm. high, finely retrorse-pubescent 

 above; spike i — 1.5 dm. long; spikelets i or 2 at each node; 

 empty glumes subulate, 7-9 mm. long ; flowering glumes lan- 

 ceolate, 5-nerved, villous-hirsute, without the short awn about I 

 cm. long. 



Closely related to the preceding and E. anihiguns, this is char- 

 acterized by its long-haired and more strongly nerved flowering 

 glume. It grows on plains and foothills at an altitude of 1500- 

 1800 meters. 



