215] FLORA OF BOULDER, COLORADO dj 



Manitoba to Assiniboia; Illinois to Texas and New 

 Mexico. 



56. BOTJTELOTJA Lag. Grama-grass. Mesquit-grass. 



95. B. hirsuta Lag. Hairy mesquit. 



Dry plains and mesas, less common than the next, 5100- 

 6000 ft. (Daniels, 956). Also at Meadow Park, 6500 ft. 

 (Rydberg). 



Illinois to South Dakota; Texas to Arizona. 



96. B. oligostachya (Nutt.) Torr. Common grama-grass, 

 or mesquit-grass. 



Common on the plains and mesas; occasional on the foot- 

 hills, 5100-8000 ft. (Daniels, 220). One of the most charac- 

 teristic grasses of the Great Plains. 



Wisconsin to Assiniboia; Mississippi to Arizona and 

 Mexico. 



57. ATHEROPOGON Muhl. Tall mesquit. 



97. A. curtipendulus (Michx.) Fourn [Bouteloua raceniosa 

 Lag.]. Prairie grama-grass. 



Frequent on the plains, mesas and foothills, 5100-7000 ft. 

 (Daniels, 299). Meadow Park (Rydberg). 



Ontario and Michigan to Manitoba; New Jersey to Tex- 

 as, Arizona, and Mexico. 



58. BTJLBILIS Raf. Buffalo grass. 



98. B. dactyloides (Nutt.) Raf. [Buchloc dactyloides (Nutt.) 

 Eng.]. Common buffalo grass. 



Abundant on the plains and mesas, 5100-6000 ft. (Daniels, 

 198). 



Minnesota to North Dakota; Arkansas to New Mexico 

 and Mexico. 



59. PHRAGMITES Trin. Reed. 



99. P. Phragmites (L.) Karst. [P. communis Trin.]. Com- 

 mon REED. 



About a spring at foot of Flagstaff Hill, only three or four 

 plants, 6000 ft. (Daniels, 834). 



Europe: Asia: temperate North America. 



