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Parts used. — At the time of flowering the leaves and tops are collected 

 for medicinal purposes and are dried in the usual manner. The odor 

 of tansy is strongly aromatic and the taste bitter. In drying, tansy 

 loses about four-fifths of its weight. 



Tans} 7 is employed in derangements of women, and has stimulant 

 and tonic properties. It is also used for expelling worms. This drug 

 is poisonous and has been known to produce fatal results. 



Fig. 16. — Tansy {Tanacetum vulgare L. i. 



Fig. 17. — Gum plant (Grindelia rdbusta Xutt.). 



Imports and prices. — A I tout 30,000 pounds of tanacetum or tansy are 

 imported annually. The price paid per pound ranges from 3 to 6 cents. 



GUM PLANT. 

 Grindelia robusta Nutt. 



Range.— The gum plant (fig. IT) occurs in the States west of the 

 Rocky Mountains. 



Description. — The entire plant is covered with a resinous substance, 

 which gives it a gummy, varnished appearance, whence its common 

 name, gum plant, is derived. 



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