Erigeron oreganus

{{Short description|Species of flowering plant}}

{{Speciesbox

|image = Gorge Fleabane imported from iNaturalist photo 291141195 on 1 November 2024.jpg

|genus = Erigeron

|species = oreganus

|authority = A.Gray

}}

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.[http://bonap.net/MapGallery/County/Erigeron%20oreganus.png 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.[http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250066644 Flora of North America, Erigeron oreganus A. Gray, Proc. Amer. Acad. Arts. 19: 2. 1883. Gorge fleabane ]