32 



Raphanus [Tourn.] L. Radish. 



Raphanistrum L. Wild Radish. Jointed Charlock. 

 Brassica [Tourn.] L. Mustard. Turnip. 



ALBA (L.) Boiss. White Mustard. 



juncea (L.) Cosson. Herb. Spfld Sci. Museum. 



NIGRA (L.) Koch. Black Mustard. 



campestris L. Rutabaga. More or less common in waste places. 

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



orientalis (L.) Dumort. Belchertown, R. E. Torrey. 

 SisymbriuTn [Tourn.] L. Hedge Mustard. 



OFFICINALE (L.) ScOp. 



officinale (L.) Scop. var. leiocarputn DC. Herb. Spfld Sci. Mus. 

 'Erysimum [Tourn.] L. Treacle Mustard. 



cheiranthoides L. Worm-seed Mustard. Mt. Toby, H. G. Jesup; 

 Sunderland. 

 Radicula (Dill.) Hill. Water Cress. 



Nasturtium-aquaticum (L.) Britten & Rendle. True Water 

 Cress. More or less common in brooks. 



sylvestris (L.) Druce. Yellow Cress. 



palustris (L.) Muench. Marsh Cress. 



palustris (L.) Muench. var. hispida (Desv.) Robinson. Leverett 

 pond, R. E. Torrey. 



Armoracia (L.) Robinson. Horse-radish. Persistent and spread- 

 ing around old dwellings. 

 Barbarea R. Br. Winter Cress. 



VULGARIS R. Br. Common Winter Cress. Yellow Rocket. 



striata Andrz. Longmeadow ; Herb. Spfld Sci. Museum. 

 Dentaria [Tourn.] L. Toothwort. Pepper-root. 



diphylla Michx. 



maxima Nutt. Springfield, Miss G. L. Pettis. 



laciniata Muhl. Deerfield, E. Hitchcock ; Springfield, Miss G. 

 L. Pettis ; Amherst and Sunderland. 

 Cardamine [Tourn.] L. Bitter Cress. 



bulbosa (Schreb.) BSP. Spring Cress. 



pratensis L. Cuckoo Flower. Amherst, A. V. Osmun ; Conway. 



parvi flora L. 



pennsylvanica Muhl. 

 Arabis L. Rock Cress. 



lyrata L. Mt. Tom, S. Stebbins. 



Drummondi Gray. 



hirsuta (L.) Scop. 



laevigata (Muhl.) Poir. 



canadensis L. Sickle-pod. 

 Isates 



tinctoria L. Dyer's Wood. Amherst, Mass. Agr. College grounds. 

 See Cyclopedia of Am. Hort., Bailey, p. 836. 



