280 



POISONING. 



RANUNCULACE.E (CROWFOOT FAMILY). 



* Aconitum napellus.^Aconite (monkshood ; wolfsbane) is very com- 

 monly cultivated in gardens, and is therefore capable of doing great 

 damage to stock. Horses and cattle have frequently been poisoned by 

 eating the leaves and flowering tops. 



* Aconitum columbianum. — The Western aconite, or monkshood, is 

 native in the north-western portion of America, where it sometimes 

 poisons sheep. 



Anemone quinquefolia. — The common wind flower, which grows 

 throughout most of the United States, is extremely acrid and poisonous. 

 Cattle seldom touch it. The plant loses most of its poison in drying. 



Fig. 78. — Poke weed {Phytolacca decandra), one-half natural size. 



* Delphinium tricorne. — The dwarf larkspur, or stagger weed, of the 

 north-eastern quarter of the United States has been especially reported 

 from Ohio as fatal to cattle in April, when the fresh leaves appear. 



* Delphinium consolida. — The seeds of the commonly introduced 

 field larkspur are well known to be poisonous; the leaves are known 

 in Europe to be fatal to cattle. 



* Delphinium menziesii.— The purple larkspur of the north-western 

 quarter of the United States is very common throughout Montana. In 

 one case of poisoning reported by Dr. E. V. Wilcox, of the Montana 

 Experiment Station, over GOO sheep were affected, 250 of which were 

 claimed to have been killed by the weed. An experiment made by 



