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. 
ortentalis (L.) Dumort. Belchertown, R. E. Torrey. 
Sisymbrium [Tourn.] L. Hedge Mustard. 
OFFICINALE (L.) Scop. 
officinale (L.) Scop. var. letzocarfum 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. 
stricta 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. 
parviflora 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. 
