100 NEW YORK STATE MUSEUM 



Lepidium virgin! cum L. 

 Wild peppergrass 

 Koadsides. Common. May-November. 



Lepidium apetalum Willd. 

 Apetalous peppergrass 

 Roadsides in dry soil. Common. June-July. 



Lepidium sativum L. 

 Peppergrass 

 Roadsides at Apalachin. Escaped from gardens. Infrequent. 

 June-August. sisymbrium officinale (L.) Scop. 



Hedge mustard 

 Waste places. Common. May-November. 



Sisymbrium altissimum L. 

 Tall sisymbrium 

 Waste places, specially along railroads. Owego. Summer. 

 This is a bad weed of recent introduction, but it is now estab- 

 lished in many parts of the State. 



Brassica nigra (L.) Koch 

 Black mustard 

 Fields and waste places. Common. June-November. 



Brassica arvensis (L.) B. S. P. 

 B. sinapistrum Boiss. 

 Cha7'lock. Wild mustard 

 Fields nnd waste places. Common. May-November. 



Brassica campestris L. 

 Turnip 

 Occurs occasionally in waste places, but does not persist long. 

 Summer. Brassica napus L. 



Rape 

 This is cultivated for sheep pasture, but sometimes escapes and 

 persists for a short time. 



Raphanus sativus L. 

 Garden radish 

 This occasionally escapes from cultivation and is spontaneous 

 for a 3 ear or two. 



