Sub-category: Mustard family
A herbaceous, hairless, perennial plant growing to 40 to 60 cm tall, with pinnate leaves 5 to 12 cm long with 3 to 15 leaflets, each leaflet about 1 cm long. The flowers are produced on a spike 10 to 30 cm long, each flower 1 to 2 cm diameter with four pale pink (rarely white) petals.
It is grown as an ornamental plant in gardens, and has become naturalized in North America as a result of cultivation. Also found close to water.