792 



MANUAL OF POISONOUS PLANTS 



Distribution. Common in the northern Mississippi Valley, now widely 

 scattered east to Nova Scotia and south to Kentucky. 



Artemisia tridentata Nutt. 



From 2-12 feet high, much branched, silvery canescent; leaves cuneate, 

 obtusely 3-toothcd or 3-lobed, or 4-7 toothed at the summit, upper leaves cune- 

 ate-linear; heads homogamous ; flowers all perfect and fertile; heads densely 

 paniculate ; 5-8 flowers. 



Distribution. From Montana and Colorado westward covering immense 

 areas. The characteristic sage brush ; similar species are the A. trifida, Nutt, 

 a smaller plant common westward, and the A, arbuscula, Nutt., also a dwarf 

 plant found in the high mountains and elevated plains : the A. cana, Pursh, 

 from 1-2 feet high ; silvery canescent leaves ; found from Saskatchewan to 

 'Dakota, Montana and Colorado. 



Poisonous properties. The sage brush is consumed by sheep and cattle, 



Fig. 454. Wormwood. 

 (Artemisia biennis). A com- 

 mon weed in the Mississippi 

 Valley. Ada Hayden. 





Jiile: 

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