Cardamine pratensis, the cuckoo flower, lady's smock, mayflower, or milkmaids, is a flowering plant in the family Brassicaceae, native throughout most of Europe and Western Asia. The specific name pratensis is Latin for 'meadow'.
Cardamine pratensis is a herbaceous, hairless, perennial plant growing to 40–60 cm tall, with pinnate leaves 5–12 cm long with 3–15 leaflets, each leaflet about 1 cm long. The flowers are produced on a spike 10–30 cm long, each flower 1–2 cm in diameter with four very pale ...