138 Wyoming Experiment Station. 



Artemisia filifolia, Torn Ann. Lye. N. Y. ii, 211 (1827). 



This fine species is also rare unless it be in the northeastern part 

 of the state. 



Inyan Kara Divide, August 30, 1892, B. C. Bcffum. 



Artemisia frigida, Willd. Sp. PI. iii, 1838 (1804). 



Perhaps the commonest of our long list of " sages," appearing 

 everywhere on the dry plains and in the hills. 



Union Pass, August 10, 1894 (No. 861); University campus^ 

 September 16, 1894 (No. 1135); Sheridan Experiment Farm, Sep- 

 tember 1895. 



Artemisia Ludoviciana, Nutt. Gen. ii, 143 (1818). 



Quite variable, differing especially as to foliage and compactness 

 of panicle. On creek banks throughout the state. 



Laramie, October 6, 1894 (No. 1171); Laramie Peak, August 5» 

 1895 (No. 1643). 



Artemisia Ludoviciana integrifolia, n. var. 



Leaves all entire, large, (1-3 inches long), narrowly lanceolate, 

 margins revolute ; panicle strict, heads fewer and larger than in the 

 species. 



Willow Creek, July 20, 1894 (No. 568). 



Artemisia Mexicana, Willd. Spreng. Syst. iii, 490. 



Infrequent; Sweetwater Stage Station, September 9, 1894 (No. 

 1181). 



Artemisia Norvegica, Fries, in Liljeb. Fl. (1815). 

 A handsome plant, infrequent, alpine. 

 Union Peak, August 12, 1894 (No. 897). 



Artemisia scopulorum, Gray, Proc. Acad. Phila. 66 (1863). 

 Probably in all our alpine regions. 



Union Peak, August 13, 1894 (No. 989); La Plata Mines, August 

 22, 1895 (No. 1779). 



Artemisia tridentata, Nutt. Trans. Am. Phil. Soc. (II) vii, 398 (1841). 

 This is the shrub that is generally designated by the term " sage 

 brush," whereas the term sage is applied indiscriminately to the 

 preceding. It is, perhaps, the most characteristic shrub of the 

 Wyoming plains and valleys. Its presence indicates soil of good 

 quality, reasonably free from alkali. Of very slow growth, but on 



