EMERGENCY FOOD PLANTS AND POISONOUS PLANTS 



20 



plant is extensively eaten. It should be cut into small pieces 

 and well cooked, preferably with one or two changes of water. 



ISk 



P^GURE 58. — Tovrnefortia argentea. 



Warning: Many of the American species are not edible; some 

 contain saponin and others contain minute stinging crystals 

 of oxalate of lime. Seek the advice of natives whenever pos- 



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