PLANTS POISONOUS TO STOCK. 



247 



^yith a tendency to lean backwards, the front limbs remaining fixed in 

 position. The patient often sits down on the hind quarters like a dog. 



APIACEiE (carrot FAMILY). 



* Cicuta maculata. This is the water hemlock (spotted hemlock ; 

 beaver poison ; cowbane), which grows most abundantly throughout the 



Fig. 101. — Oregon water hemlock {Cicuta 

 vagans). a, Plant with leaves, one-sixth 

 natural size ; h and h^, rootstock and 

 horizontal roots, showing section, half- 

 size ; c, terminal leaflets, one-sixth na- 

 tural size ; d, flowering spray, full size. 



Fig. 102. — Poison hemlock (Conium mac- 

 ulatu7n), showing upper portion of 

 plant with flowers and seed, one-third 

 natural size. 



United States. It is one of the best known poisonous plants. Stock are 

 not infrequently killed by eating the fleshy roots or hay with which the 

 plants are mixed. 



* Cicuta vagans. — Cattle are frequently killed in Oregon and 

 Washington by eating the large fleshy rootstocks which have been 



