Eriophyllum lanatum, with the common names common woolly sunflower, Oregon sunshine and golden yarrow, is a common, widespread, North American plant in the family Asteraceae. The flower heads have 6–14 rays, which are darker towards the base, and several disk flowers. They bloom from May to August.

The common name "woolly sunflower" is often used to describe any member of the genus Eriophyllum.

Varieties

Varieties include:

  • Eriophyllum lanatum var. arachnoideum <small>(Fisch. & Avé-Lall.) Jeps.</small> — Spiderweb sunflower; endemic to the California Coast Ranges from Del Norte County to Monterey County in California.
  • Eriophyllum lanatum var. croceum <small>(Greene) Jeps.</small> — Sierra woolly sunflower; endemic to the Sierra Nevada in California.
  • Eriophyllum lanatum var. grandiflorum <small>(A.Gray) Jeps.</small> — Large flowered woolly sunflower; northern California, Oregon.
  • Eriophyllum lanatum var. hallii <small>Constance</small> — Fort Tejon woolly sunflower, Hall's woolly sunflower; endemic to the Tehachapi Mountains in Kern County, and Sierra Madre Mountains in Santa Barbara County, in southern California.
  • Eriophyllum lanatum var. integrifolium <small>(Hook.) Smiley</small> — Oregon sunshine; California, Idaho, Montana, Nevada, Oregon, Utah, Washington, Wyoming.
  • Eriophyllum lanatum var. lanatum — Idaho, Montana, Oregon, Washington.
  • Eriophyllum lanatum var. lanceolatum <small>(Howell) Jeps.</small> — endemic to the Klamath Mountains, in NW California and SW Oregon.
  • Eriophyllum lanatum var. leucophyllum <small>(DC.) W.R.Carter</small> — British Columbia, Oregon, Washington.
  • Eriophyllum lanatum var. obovatum <small>(Greene) H.M.Hall</small> — Southern Sierra woolly sunflower; endemic to the western Sierra Nevada and the San Bernardino Mountains in California.

Distribution and habitat

Eriophyllum lanatum is native to western North America. It is most common across California, This species has only been collected from Mexico once, on Guadalupe Island, and it is most likely extirpated there.

It can be found (for instance in California) in chaparral, oak woodland, mixed evergreen forest, and yellow pine forest and other conifer forests, grassland, and sagebrush scrub habitats.