I^IP^ST FeEF^Ot^TT 



FLORA OF WYOMING. 



BY AVEN NELSON. 



INTRODUCTION. 



Among the duties planned by and for the Botanist of 

 the Experin:ient Station for the year 1894 were the fol- 

 lowing : 



1. To study the Fungi affecting the ordinary farm 

 crops and the best means of combatting the same. 



2. To give attention to the weed question, with a 

 view to finding effective methods for exterminating or 

 preventing the spread of the more troublesome ones. 



3. The building up of the herbarium. 



4. The preparation of a report upon the flora of the 

 state. 



These all received attention to the extent of the time 

 that could be spared from other imperative duties, such 

 as those of the classroom and the routine work of the 

 Station, but it was found necessary to continue the same 

 subjects for 1895. During that time one phase of the 

 first has had attention in Bulletin No. 21, "The Smut of 

 Grains and Potato Scab;" the second in Bulletin No. 19, 

 " Squrrel-Tail Grass (Fox-Tailj," our worst weed, and a 

 Press Bulletin on the "Russian Thistle." The third has, 

 of course, gone on incidentall}' with and preparatory to 

 the fourth. 



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