Thick- and woody-stalked perennial herb mostly to about 1.5 m tall but up to 3 m. Leaves to about 40 cm long, the lobes lanceolate-ovate, to about 10 cm long and with saw-toothed margins. Leaf stalks swollen. Flower cluster rays 30-50; spring to summer. Fruit prolific, about 1.4 cm long.
Source: (2002). Apiaceae. In: . 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.