Annual herb to about 30 cm tall, roughly hairy. Leaves to about 15 cm long in a basal rosette, narrowly oblanceolate to lyre-shaped, entire or divided. Flowers having sepals without a sac; petals white, 2-3 mm long; spring. Fruit triangular, 6-9 mm long, flattened and with the valves ridged, strongly notched at the tip.
Widely naturalised in both the northern and southern hemisphere as a weed of disturbed areas and sometimes found as a weed in gardens.
Distinctive purse-shaped fruits on stems with flowers at the tip.
Source: (1997). Brassicaceae. In: . Horticultural Flora of South-eastern Australia. Volume 2. Flowering plants. Dicotyledons. Part 1. The identification of garden and cultivated plants. University of New South Wales Press.