Fineleaf Woollywhite

Hymenopappus filifolius is a North American species of flowering plant in the daisy family known by the common names fineleaf hymenopappus and Columbia cutleaf. It is native to western and central North America from Alberta and Saskatchewan south as far as Chihuahua and Baja California.

Hymenopappus filifolius grows in a number of habitats, often in arid regions. The plant is variable in appearance and there are a great number of varieties of the species. It is a taprooted perennial herb growing as a small clump on the ground to an erect spray of stems up to a meter (40 inches) tall. Almost all of the leaves are located at the base of the plant in a woolly gray-green patch. They are up to 20 centimeters (8 inches) long and are divided into blunt, thready leaflets. They are glandular and thinly hairy to quite woolly, and dark green under the coat of white wool. The stem ends in a branching inflorescence of knob-shaped discoid flower heads. They are filled with golden yellow or white disc florets. There are no ray florets.