25 



Oonmon name: 



Black mustard. 

 Distribution and habitat:- 



Naturalized from Europe* Fields* roadsides, waste 

 places; common. 



PI. of Mon* Co.: "Cultivated fields, waste places, 

 along streams; common". PI. Buf. Vic.: listed. C. F.: 

 "Waste places and along streams and lake -shores " . Loc* 

 Herb.: Ithaca (and also at Charlotteville^ (Niagara Co.), 

 Brookfield, and Norwich). 



Collected as follows :- 



Ithaca, along path. Just above Quarry St. 



(abundant). 

 Ithaca, Alumni Field (one specimen, eridently 

 B. nigra ; leaf -margins mostly or entirely 

 lacking the usual fine dentation). 

 Cayuga, near R. R. Sta. 



Renwick (very abundant at and near Renwick, 

 and in places south about to fall Cr.; 

 sometimes forming dense thickets, and 

 s omotAm e s ff a mwAng dans e tl i ii»fcot s »i and- 

 sometimes, probably, reaching a height of 



Perhaps seen a few times in other localities* 



