WEEDS OF MONTANA 



59 



Fig. 17b. Sisymbrium altissimum, L. Fruit 

 Vi natural size; b enlarged. 



the state east of the Divide, but is local in its distribution. Seeds 

 scattered by water and in mud. 



114. *SISYMBRIUM OFFICINALE, Scop v Hedge Mustard. 



Another introduced annual, occasional in waste places, but 

 not likely to become troublesome. At St. Ignatius, Troy, Helena, 

 Bozeman and Missoula. 



115. *SOLANUM NIGRUM, L. Deadly Nightshade. 



An introduced annual in waste places at Columbia Falls (R. S. 

 Williams), and Selish (V. K. Chesnut). 



