Bulletin 575 U.S. Dept. of Agriculture. 



Plate I. 



White loco, or'Rattleweed" (Oxytropis lambertii. 



This is the most destructive of all the loco plants, not because of its greater toxicity but because 

 of its wide distribution, extending from Alaska on the north to Mexico on the south, and 

 from the Continental Divide to the western part of Minnesota. It poisons horses, cattle, 

 and sheep. 



