134 A GUIDE TO THE WILD FLOWERS 



basal leaves about three times as broad as the stem leaves. 

 Flowers about ^ in. wide, white, or whitish-pink, in a ter- 

 minal cluster. Pods slender, about i in. long. Labrador to 

 N. J., and wesward. May. 



391. Bitter-cress. Cardamine pennsylvanica. Much like No. 

 390, but the flowers about ^ in. wide. In wet places. New- 

 foundland to Florida, and westward. May. Fig. 391. There 

 are several other species, some growing on dry land, but 

 mostly in wet places. 



392. Bulbous Cress. Cardamine bulbosa. Unlike Nos. 390 or 

 391 in having round, undivided, long-stalked basal leaves, 

 and oblong merely toothed stem leaves. Flowers about 3^ in, 

 wide, white. Pods stiflly erect, about i in. long. In wet places. 

 Vermont and southern Ontario to Florida, and westward. 

 May. 



393. Smooth Rock-cress. Arahis laevigata. A bluish-green 

 completely smooth herb 1-3 ft. tall, usually unbranched. 

 Basal leaves, broadest towards the tip, narrowed towards the 

 base, toothed, 2-3 in. long; stem leaves oblong conspicuously 

 stem-clasping, toothed but not much so. Flowers greenish- 

 white, scarcely %. in. wide. Pods lax, or even recurved, 3-4 

 in. long. Rocky woods, Quebec and Ontario to Georgia, and 

 westward. May. 



394. Hairy Rock-cress. Arabis hirsufa. Somewhat similar to 

 No. 393, but usually rough hairy throughout. Basal leaves 



