C. lutea: stems 6-8 inches high; leaves pale green, much divided, the segments ovate or wedge-shaped, cut into two or three lobes; flowers in short racemes, pale yellow, with a short broad spur; pod three or four lines long. - Naturalized on old walls, rare. Fl. May to August.
C. clavieulata; annual; stems slender, intricate, 1-2 feet long, climbing by means of the leaf-stalks, which usually terminate in delicate tendrils; leaf-segments small, ovate or oblong, and often toothed or cut; racemes short, compact; flowers small, white, with a slight yellow tinge, and a very short spur; pod two or three lines long. - Bushy shady places. Fl. June, July.