Prefers moist, shady conditions. It is considered by most gardeners to be a pest. The seed pods extend above the flowers; when they ripen, the grains are projected and hence invasive.
The 4 petalled flowers are very small and white.
Reniform kidney-shaped leaf, Elliptic oval leaf. Rosette: a rosette of leaves with opposite, rounded to diamond-shaped leaflets, quite varied, end leaflet larger.
Silique: two fused carpels, which burst open when touched.
Leaves and flowers: do not pick in fields or near streams where sheep have been grazing, they may be infected with pathogenic organisms like liver fluke.
The plant is rich in Vitamins A & C, contains calcium, phosphorus and magnesium. It has stimulating, diuretic and expectorant properties.