Slender annual herb to 1 m tall. Leaves variable, 2-3-pinnate, lower ones with large forward-pointing teeth, upper ones narrow to linear. Flower clusters with 15-60 rays, with bracts of equal length; summer to autumn. Flowers white. Fruit 1.5-2 mm long.

S W Asia, N Africa, S Europe

Widely naturalised on wasteland in most Australian states.

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.