Alternate name: Swamp Whiteheads
Family: Apiaceae, Carrot view all from this family
Description Native herbaceous perennial.
Habit: erect; stems green to white, roughly hairy; tuberous root.
Height: 3-6 ft.
Leaf: divided into several segments which bear widely-spaced leaflets. The leaflets may be intricately divided into small segments.
Flower: loose umbel, to 4 in wide, of tiny white to purple spherical flowers, on stalks up to 2.5 in long.
Flower July to August.
Habitat Moist habitats such as creeksides and meadows, in yellow pine forest and subalpine forest; in the Sierra Nevada, San Jacinto, and San Bernadino mountains.
Range Western North America from Idaho through Nevada and California into Baja California; at 3000-10,000 ft (915-3050 m).
Discussion Also known as: woollyhead parsnip, swamp whiteheads.