First Report on the Flora of Wyoming. 197 



Agropyrum glaucum, R. & S. Syst. Veg. ii, 752 (1817). A. repens 

 glaucum, (Desf.) Scribn. 



One of the most valuable of the native hay grasses, producing 

 heavy crops under judicious irrigation. It is essentially an upland 

 grass and over-irrigation will soon destroy it. 



Lander, July ] 892 ; Laramie and other places at various times. 

 Agropyrum unilaterale, Cassidy, Bull. Col. Exp. Station xii, 63 (1890) 

 A. caninum unilaterale (Cassidy) Vasey. 

 Sheridan, August 18, 1892. 

 Agropyrum violaceum, Vasey, Grasses U. S. Spec. Rep. No. 63, 45. 



A valuable forage plant; Big Sandy, July 1892. 

 Hordeum jubatum, L. Sp. PI. 85 (1753). 



The worst weed in the state ; a positive pest in the hay fields. 

 Its extermination should receive every encouragement. 



Hartville, July 16, 189-4 (No. 558), and noted in numerous places. 

 Hordeum nodosum, L. bp. PI. Ed. 2, 126 (1762). 



Infrequent; Big Horn Mountains, August 4, 1892. 

 Hordeum pusillum, Nutt. Gen. i, 87 (1818). 



Infrequent; Platte River, Fairbanks, July 11, 1894 (No. 426). 

 Elymus Canadensis, L. Sp. PL 83 (1753). 



Frequent but hardly common; Whalen Canon, July 18, 1894 

 (No. 552). and by B. C. Buffum in 1892. 

 Elymus condensatus, Presl. Rel. Ha;nk. i, 265 (1830). 



Common along streams in the eastern part of the state 

 Wheatland, 1892. 

 Elymus sitanion, Schult. Mant. ii, 426 (1824). E. elymoides, (Raf.) 

 Swezey. 



On mountain slopes at high altitudes. 



Union Peak, August 13, 1894 (No. 1021); Laramie Peak, August 

 6, 1895 (No. 1602). 

 Elymus Virginicus, L. Sp. PI. 84 (1753). 



Not common ; Prairie Dog, August 8, 1892. 



CONIFER.E. 



Pinus flexilis, James, Long Exp. ii, 35 (1823). 

 This is common in our mountain ranges. 



Laramie Hills, May 12, 1894 (No. 18); Cummins, July 29, 1895 

 (No. 1501). Rocky Mountain White Pine. 



