52 FLORA OF WORCESTER COUNTY. 



Capsella Medic. Shepherd's Purse. 

 Bursa-pastoris (L.) Medic. 



In fields and waste places, very common. 

 Camelina Crantz. False Flax. 



sativa (L.) Crantz. Occasional. 



Raphanus (Tourn.) L. Radish. 



Raphanistrum L. WUd Radish. 



Lunenburg. Mr. Kilburn. 



sativus L. Radish. Occasionally spontaneous. 



Brassica (Tourn.) L. Mustard, 

 arvensis (L.) Ktze. Charlock. 

 Worcester. Mr. George Coult. 

 nigra (L.) Koch. Black Mustard. 



In waste places, common. 

 campestris L. Ruta-baga. 



Holden. Mr. Delano Douglass. 

 Conringia (Heist) Link. Hare's-ear Mustard, 

 orientalis (L.) Dumont. 



Worcester. Mrs. John Wetherbee. 

 Sisymbrium (Tourn.) L. Hedge Mustard. 

 officinale (L.) Scop. 



Worcester. Mr. T. E. N. Eaton, 

 altissimum L. Tumble Mustard. 



Worcester. Mr. George Coult. 

 Erysimum (Tourn.) L. Treacle Mustard, 

 cheiranthoides L. Worm-seed Mustard. 



Worcester. Mr. George Coult. 

 Radicula [Dill.] Hill. Water Cress. 



Nasturtium-aquaticum (L.) Britten and Rendle. 



In brooks and streams, common, 

 palustris (L.) Moench. Marsh Cress. 



In wet places, common. 



