, the carrot family, is characterized by finely divided leaves (pinnate or palmate, though some species have simple leaves), and compound umbels of tiny flowers, usually white or yellow. Flowers are radially symmetrical, formed of five sepals (sometimes absent), five petals and five stamens. The US has 89 genera and over 400 species, many of which look similar, so identification can be a problem. Major genera include angelica, cymopterus, ligusticum, lomatium and sanicula. Although some plants are edible - including carrots, parsley, celery and parsnips - other species are highly poisonous.