IMPORTANT POISONOUS PLANTS 



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Ranunculus bulbosus L. Bulbous Crowfoot. 



Common eastward, naturalized from Europe. 



Ranunculus abortivus L. Crowfoot. 



Common weed in many parts of the north, the leaves are quite acrid and 

 have a sharp, peppery taste. 



Ranunculus sceleratus L. Cursed crowfoot. 



A very poisonous species, especially to cattle, since it grows in marshes 

 along with other herbage and is often eaten with other forage plants. Contains 

 anemonol and anenmonic acid. 



Fig. 19b. Common Poppy iPapaver somnif'enim). Narcotic. (Lois Pammel). 



Anonaceae. Custard Apple Family. 



Asimina triloba Dunal. Papaw. 



It occurs in eastern Iowa as far north as Clinton and Dubuque. Common 

 Southward. The pawpaw is commonly eaten, but a case of poisoning is re- 

 ported. 



Trollius laxus Salisb. Spreading globe flower. 



From western Connecticut to Michigan and the Rocky Mountains. Several 

 species contain saponin and T. Europaeus is considered poisonous in Europe. 

 It contains saponin. 



Thalictrum revolutum DC. Meadow Rue. 



Common in low moist meadows in Western North America. All of the 

 species of meadow rue are more or less acrid. The T. polycarpum of Cali- 

 fornia is poisonous to man according to Chesnut. 



Magnoliaceae. Magnolia Family. 



Magnolia grandiflora L. Magnolia. 



