Erigeron salmonensis is a rare North American species of flowering plant in the family Asteraceae known by the common name Salmon River fleabane. It has been found only in the Salmon River Canyon in central Idaho, United States.Biota of North America Program 2014 county distribution map
Erigeron salmonensis grows on ledges and cracks in north-facing cliffs. It is a perennial herb that can reach up to 35 cm (14 inches) tall, forming a woody underground caudex. The inflorescence generally contains only 1 to 3 flower heads per stem. Each head contains 11 to 15 white ray florets surrounding many yellow disc florets.Flora of North America, Erigeron salmonensis Brunsfeld & G. L. Nesom, 1989. Salmon River fleabane Brunsfeld, Steven J. & Nesom, Guy L. 1989. Erigeron Salmonensis (Asteraceae), a Rare New Species from Idaho. Brittonia Vol. 41, No. 4 (Oct. - Dec., 1989), pp. 424-428
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