Erigeron oreganus is a rare North American species of flowering plant in the family Asteraceae, called the gorge fleabane. It has been found only in the Columbia River Gorge along the border between the US states of Washington and Oregon.Biota of North America Program 2014 county distribution map
Erigeron oreganus is a perennial herb up to 15 centimeters (6 inches) tall, with a large taproot. The plant generally produces 1-4 flower heads per stem, each head with up to 60 white or pink ray florets surrounding numerous yellow disc florets. The species grows in moist, shaded cliffs and ledges.Flora of North America, Erigeron oreganus A. Gray, Proc. Amer. Acad. Arts. 19: 2. 1883. Gorge fleabane
References
External links Paul Slichter. Fleabanes of the Columbia River Gorge, Columbia Gorge Daisy, Gorge Daisy, Gorge Fleabane, Oregon Fleabane Erigeron oreganus photos Oregon Flora Image Project, Erigeron oreganus A. Gray, gorge fleabane - native