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SOME INTRODUCED PLANTS OF SALT LAKE COUNTY, 



UTAH 



By a. O. Garrett 



The following is a fairly representative list of the introduced 

 plants, and incidentally of the introduced weeds, of Salt Lake 

 County. In consideration of the fact that these introduced 

 weeds are by far the most troublesome, it is a pity that their 

 spread was ever permitted. When we realize the immense dam- 

 age done to agriculture through the agency of weeds, we are 

 surprised that more states do not have regular state "weed 

 inspectors," whose duty shall be the extermination of weeds in 

 general, but especially the watching out for, and the prompt 

 extirpation of, those plants introduced from time to time that 

 are likely to become pests. The writer has observed, in the 

 course of the past ten years, several plants spread themselves 

 throughout Salt Lake City; plants that when he came to Salt 

 Lake City in the autumn of 1902 were either very rare or else 

 were apparently not here at all. A very little directed effort 

 would have saved the day. 



Bromus tectorum. Downy Brome Grass. In alfalfa fields and 

 covering the hillsides. Alfalfa hay containing much of this 

 grass fails to command the price of grass-free alfalfa, thereby 

 resulting in an annual depreciation of many thousands of 

 dollars. 



Bromus sterilis. Sterile Brome Grass. Associated with Bromus 

 tectorum. Equally objectionable. 



Bromus hordeaceus. Soft Chess. Abundant on the benches 

 about Salt Lake City. 



Rumex crispus. Curled Dock. Abundant along the irrigation 

 ditches. 



Rumex Acetosella. Field Sorrel. Occurring occasionally in 



lawns and waste places. As yet rare. 

 ■Polygonum aviculare. Door-weed. Abundant in waste places in 

 city lots. 



