Includes the common herbs anise, carrot, celery, coriander, dill, fennel, parsley, and parsnip, as well as the highly toxic hemlocks. Stems often furrowed.
Flowers usually compound, almost always concentrated in flat-topped umbels.
Flowers have 5 petals, usually uneven, and 5 stamens. Seeds and fruit form below where the petals and stamen originate. Some part of the plant usually has a strong aroma, due primarily to various oils produced by the plant. Uppermost leaves not dissected. Basal leaves larger and with longer petioles than cauline leaves.