66 



and southward". "Fields, common (except in extreme north" 

 (B. M.)j "sandy waste places and roadsides" (6. M.). 



PI. Mon. Co., Sup.: "Occasional in waste sandy- 

 places about Rochester". PI. Buf. Vic: 2 stations, 

 "fcardly yet establisht". C. F.: "Shaded clayey soil; 

 scarce. Introduced in Cemetery, Ithaca (1878). Wild, 

 south bank of Big Gulley, 1882". Loc Herb.: Ithaca 

 (Cemetery); road to Enfield. 



Not found by the -writer. 



10. ERYSIMOM (fourn.) L. 



28. Erysimum chelranthoides L. 



Scientific name: 



Erysimum chelranthoides L. Sp. PI, 661. 1753. 



Common names : 



Vorm-seed mustard. 



Treacle mustard. 

 Distribution and habitat: 



Native; also in southern Europe. Southern Canada, 

 northern U. S. "Along streams and in fields" (B. M.)j 

 "banks of streams or in open sterile soil" (G. M.). 



PI. Mon. Co.: "Infrequent; most abundant in dry 



