93 



hare capsules practically glabrous, while the other Ithaca 

 specimen has the capsules somewhat puhescent. 



Very common along roadsides, etc., at Ithaca, and 

 in some other localities. Collected as follows - 



1. C. U. Campus, north, path along edge of Fall 



Or. rarine. 



2. Roadside, between Ellis and Ithaca. 



3. Coy 61en. 



4. Near C. U. Filter Plant, roadside. 



5. Roberts pasture, near C. U. Filter Plant. 



6. Same location. 



Specimen No. 6 was not in fryitj all the others appeared 

 to haTe capsules glabrous or practically so, and therefoee 

 evidently represent S. officinale var. leiocarpum , and 

 not the type-form of the species. 

 Diagnosis and variation: 



Few-brancht, the slender capsules very closely 

 apprest. The variation in pubescence is discust above. 



17. THLASPI (Tourn.) L. 

 45. Thlaspi arvense L. 

 Scientific name: 



Thlaspi arvense L. Sp. PI. 646. 1753. 



