Cardamine gunnii is an uncommon native herb (nb, many plants that are recognised as C. gunnii are probably C. lilacina or C. franklinensis). Its habitat is poorly known, but is probably marshy lowland areas. It is hairless and has erect stems up to 20 cm tall. It has a dense rosette of leaves and stems with few or no leaves. The distinctive feature is the presence of multiple taproots.