C. amara: stems weak, ascending; leaves pinnate with 5-7 large ovate or orbicular segments, the upper ones angular toothed; flowers largish, white, in few-flowered racemes. - Sides of streams and watercourses. Fl. April, May.
C. pratensis: stems stiff, erect; leaves pinnate the segments of the lower roundish, those of the upper ones narrow and entire; flowers largish, pale pink or blush-coloured. - Ladies'-smock or Cuckoo-flower. - Moist meadows. Fl. April, May.
C. hirsuta: stems ascending or erect, more or less hairy; leaves pinnate, with small roundish-oblong angularly toothed segments; flowers small, white. - Moist shady places. Fl March to June.