Introduced annual forb to 80cm tall. Leaves basal and alternating up the stems, to 20cm long, flat, bristly. Basal leaves lobed, the end lobe toothed. Stem leaves toothed. Flowers fragrant, yellow, with 4 petals, in racemes at the tops of the stems.
Description and photo in G.M. Cunningham, WE Mulham, PL Milthorpe and J H Leigh (1981 and later printings) Plants of Western New South Wales pages 332-333