Lomatium foeniculaceum is a hairy perennial herb growing up to 30 centimeters long from a taproot. It lacks a stem, producing upright inflorescences and leaves from ground level. The leaves are up to about 30 centimeters long and are intricately divided into many small, narrow segments. The inflorescence is an umbel of many spreading clusters of small yellow or purplish flowers. The plant has a strong scent and the edible leaves taste like parsley, a close relative.
