DESCRIPTIVE MANUAL 



143 



Pennyeress {Thlaspi arvense L.)- 



Description. — ^An annual or winter annual with simple, smooth, 

 erect or branching stem ; leaves of stem clasping, with arrow-shaped 



-t 'iN f'CRESi 



Fib. 81. Stinkweed or Field Pennyeress CThlaspi arvense). Grain and clover 



fields. - ■ 



(J^fter Clark and Fletcher.) 



