CABBAGE FAMILY 



37 



3. B. palustris (Marsh Yellow Cress). — Root fibrous ; leaves 

 lyrate, pinnatifid flowers \ in. across ; petals not longer than calyx ; 

 pods oblong. — Watery places. — Fl. June — October. 



4. Barbarea (Winter Cress). — Erect, branched, glabrous, 

 biennial herbs \ stem angular ; petals yellow, clawed ; pods straight, 

 stiff, 4-angled, acuminate. (Dedicated to St. Barbara.) 



narturtium-aquXticum {Co 



i. B. vulgaris (Common Winter Cress). — Lower leaves iyrateiy 

 pinnate, the terminal lobe roundish ; upper, obovate, toothed ; 

 raceme lax ; flowers small ; buds smooth ; claw of petals whitish. 

 Common in moist waste ground, where it may be readily recog- 

 nised by its smooth, shining, dark green leaves, and its erect, 

 angular stem, bearing numerous bright yellow floicers. Two 

 forms, differing chiefly in the size of their petals and the direc- 

 tion of their pods, are distinguished as B. stricta and B. inter- 



