73 



Distribution and habitat: 



Naturalized from Burope. "In waste places, on 

 ballast and along roadsides, N. S. to Tex.** (B. M.). 

 "Roadsides and waste places, chiefly near Atlantic ports". 

 (G. M.). 



PI. of Mon. Go.:"Rare. Rochester". PI. Buf. Vic: 

 not listed. C'. F.: "With the preceding (L. virginicum) 

 and equally common. South Hill" (added). Loc. Herb.: 

 Ithaca, Fiske-McGraw place; (and Oswego - "roadsides, 

 common" ) . See below under "Diagnosis" . 



Evidently rather common, at and near Ithaca at 

 least, along roadsides, etc. Plants determined as L* 

 ruderale hare been collected as follows > 



1, 3 - 5, 8, 9. Ithaca, Garden Aye. 



2. Ithaca, Lake St., at Fall Or. Mills. 



6. Near College of Agr. 



7. Alumni Field (baseball field). 



Other specimens (including some from McLean) may be 

 L. ruderale , but were taken too young for satisfactory 

 examination of the cotyledons of the forming seeds, or 

 eren before blooming. 

 Diagnosis : 



The main effort with Lepidium , aside from L. cam - 



