Hairless herb with a celery-like smell and generally with old dead leaves at the base of the stem. Stems hollow, grooved, purplish at the base. Leaves divided 2-3 times, purplish at first, lobes irregularly toothed and lobed above the middle. Flower cluster with rays 12-20. Flowers yellow-green. Fruit 5-7 mm long.

Source: Spencer, R. (2002). Apiaceae. In: Spencer, R.. Horticultural Flora of South-eastern Australia. Volume 4. Flowering plants. Dicotyledons. Part 3. The identification of garden and cultivated plants. University of New South Wales Press.