GRASSES OF IOWA. 



171) 



Fig 126. Calamagrostis Canadensis var. acuminata— a, spikelet ; 1 and 2 empty glumes, 

 3 flower; b, flower, 1 flowering glume, 2 palet. (Charlotte M. King.) 



DISTRIBUTION. 



I oua. Most abundant in northern Iowa; Tama County 962 (Sir- 

 rine) . 



North America. Labrador and Newfoundland to Iowa; high 

 mountains of North Carolina; Keewatin to Alaska, south in the moun- 

 tains to New Mexico and California; Alontana (Spanish Creek, Vasey), 

 Wyoming (Yellowstone Nat. Park, A. and E. Nelson, 6166; West 

 Branch of Big Goose River, Pammel and Stanton) ; Washington (Oka- 

 gan County, Elmer) ; Utah (Provo Canon, Pammel and Stanton, 203) ; 

 Colorado (Walcott, 6975 ft., Shear and Bessey, 1310). 



