48 GEOLOGICAL SURVEY OF CANADA. 



(160.) B. alba, Gray. White Mustard. 



Sinapis alba, Linn. Gray, Manual I., Ed. 38. 

 Escaped from gardens in a few places in New Brunswick. (Fowler's 

 Cat.) In a few localities around Ottawa. (Fletcher Fl. Ott.) In 

 vicinity of Quebec. (Brunet.) 



(161.) B. nigra, Koch. 



Sinapis nigra, Linn. Torr. & Gray Fl. I., 99. 

 Introduced from Europe. Halifax and Cumberland Co., N. S. (How.) 

 Rare near dwellings and on ballast. (Fowler's Cat.) Gardens and 

 waste places, Quebec. (Brunet.) Streets of Prescott. (Provancher.) 

 Around Ottawa. (Fletcher Fl. Ott.) In fields below Matane, Gaspd, 

 Q. In old gardens and around barns and manure heaps in the 

 Counties of Prince Edward and Hastings, and around Amherstburgh, 

 Ont. (Macoun.) 



(162.) B. campestris, Linn. 



Introduced from Europe. Common in fields in Manitoba and around 

 Winnipeg ; also at Victoria, B. C. 



48. CHEIRANTHUS, R. Br. (WALLFLOWER.) 



(163.) C. asper, Cham. & Schlecht. 



C. capitatus, Dougl. Hook. Fl. I., 38. 



Erysimum grandiflorum, Nutt. Torr. & Gray, Fl. I., 96 and 667. 



Common at Puget Sound. (Douglas.) To be looked for in the 

 southern part of British Columbia. 



(164.) C. pygmeeus, DC. Dwarf Wallflower. 



a Pallasii, Pursh, 436. Hook. Fl. I., 88. Torr. & Gray, Fl. I., 71. 

 Hesperis pygmsea. Hook. Fl. I., 60. 

 Hesperis minima, Torr. & Gray, Fl. I., 90. 

 Hesperis Pallasii, Torr. & Gray, Fl. I., 666. 



On the northwest coast of America. (Pallas.) Bear Lake and 

 thence to the shores of the Arctic Sea. (Bichardson.) Kotzebue 

 Sound and Cape Lisburne. (Roth. AlasJc.) Greenland. (Hooh. Arct. PL) 



49. PARRYA, R. Br. (ARCTIC ROCKET.) 



(165.) P. nudicaulis, Eegel. Vars. glabra and aspera, Eegel. 

 Cardamine articvlata. Pursh, 439. 

 P. mawocarpa, E. Br. Hook. Fl. I., 47. Torr. & Gray Fl. I., 88. 



Found during the second Arctic Land Expedition, and then only by 



