Common names: 



Yellow alyssum. 



Small alyssum. 

 Dlstrlliutlon and habitat: 



A European species » introduced at Tarlous points 

 in the northeastern and North Central States (and Ont.> 

 Canada )y and in the far West* It does not appear to he 



&a 



at .common in this region; "The Cayuga Flora" mentions 3 

 A 



localities f all in or near Ithaca (2 represented in Local 

 Herbarium) y while Plants of Monroe County"** and "Plants of 

 Buffalo and Vicinity" both "call it^rare"* each naming two 

 stations* Found by the writer only at Ithaca, - along 

 Linn St. and on the slope abOTOf near Fall Creek (abund- 

 ant at the sand -bank by the creek)* 

 Diagnosis and variation: 



$he only species of the genus here* at once recog- 



ervtlTe 

 nizable by its tufted habit and small .white -hoary leaves. 



No evidence of different hereditary types has been obtained^ 



41^ the plants appearing remarkably uniform except in 



size -characters • 



2. ARABIS L. 



2. Arabis canadensis L. 



