52 POACEAE. 



5. Bromus secalinus L. In waste places and fields from Me. to Wash., Fla. 

 and Calif. Introduced from Europe and Asia. Alt. about 5000 ft. Boulder; 

 Fort Collins. 



6. Bromus patulus M. & K. In waste places from Mass, to Wyo., Mo. 

 and Colo. Introduced from Europe. Alt. about 5000 ft. Fort Collins. 



7. Bromus hordeaceus L. (B. mollis L.) In waste places from Me. to 

 Wash., Del., Colo, and Ariz. Introduced from Europe. Denver. 



8. Bromus Porteri (Coult.) Nash. (B. Kalmii Porteri Coult.) On hill- 

 sides and in meadows from Man. to Sask., Alb., Colo, and Ariz. Alt. 7000- 

 11,000 ft. About Ouray; West Mancos Canon; Georgetown; Mancos; Cerro 

 Summit; Arboles; Durango; North Park; Cameron Pass; Stove Prairie 

 Hill; Twin Lakes; Buffalo Peaks; Gunnison; Marshall Pass; Robinson; 

 Clear Creek; Middle Park; Wagon Wheel Gap; Chambers' Lake; Ft. Col- 

 lins; Four-Mile Hill; Michigan Hill, Cameron Pass; Dolores. 



9. Bromus lanatipes (Shear) Rydb. (B. Porteri lanatipes Shear.) On 

 hillsides in Colo. Alt. 5000-9000 ft. Lower Boulder Canon, Boulder Co. ; 

 Idaho Springs; Mountain View; Hiawatha; vicinity of Boulder; Lafayette; 

 Empire Pass ; Dome Rock Valley ; Fort Collins ; Poudre Canon ; Rist Canon ; 

 quaking asp grove, west Gunnison Co. ; gulch west of Soldier Canon ; Hahn's 

 Peak, Routt Co. 



10. Bromus Richardsonii Link. (B. ciliatus Coult.; not L.) In mead- 

 ows and on hillsides from Sask. to B. C, Colo., Ariz, and Ore. Alt. 

 6000-11,000 ft. Cheyenne Mountain; vicinity of Pike's Peak; near Pagosa 

 Peak; Pandora; Gunnison; mountains of Larimer Co.; Upper La Plata 

 River; Beaver Creek; about Ouray; Mount Baldy; Ruxton Dell; Estes 

 Park; Colorado Springs; Silver Plume; Marshall Pass; Tobe Miller's ranch; 

 Moon's ranch; Happy Hollow; Four-Mile Hill; gulch west of Soldier 

 Canon; bank of Poudre; Andrews ranch; western Gunnison Co. 



11. Bromus Pumpellianus Scribn. In meadows and on hillsides from Sask. 

 to Alaska and Colo. Alt. 6000-10,000 ft. On Grizzly Creek; Veta Pass; 

 Gray's Peak; Walsenburg; Como; Beaver Creek Camp. 



Bromus Pumpellianus melicoides Shear is an awnless variety. Beaver 

 Creek. 



12. Bromus inermis Leyss. Escaped occasionally from cultivation from 

 Ohio to Mont, and Colo. Alt. about 5000 ft. Fort Collins. 



13. Bromus tectorum L. In waste places from Mass, to Wash., Va. and 

 Utah. Introduced from Europe. Alt. 5000-6000 ft. Longmont, Boulder 

 Co.; vicinity of Boulder; Fort Collins. 



14. Bromus sterilis L. In waste places from Mass, and Ohio to Pa. and 

 Colo. Introduced from Europe and Asia. Alt. about 5000 ft. Fort Collins; 

 estray in garden plot. 



Tribe 10. HORDE AE. 



66. AGROPYRON. WHEAT-GRASS, QUACK-GRASS. 



Rachis of the spike breaking up at maturity, the joints falling with the spikelet. 



i. A. Scribneri. 



Rachis of the spike continuous. 



Cespitose, the innovations intra-vaginal ; no horizontal stolons (except in A. 

 arizonicum). 



