Erigeron salmonensis explained

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.^[1]

Erigeron salmonensis grows on ledges and cracks in north-facing cliffs. It is a perennial herb up to 35 cm (14 inches) tall, forming a woody underground caudex. The inflorescence generally contains only 1-3 flower heads per stem. Each head contains 11–15 white ray florets surrounding many yellow disc florets.^{[2] [3]}

Notes and References

1. http://bonap.net/MapGallery/County/Erigeron%20salmonensis.png Biota of North America Program 2014 county distribution map
2. http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250066673 Flora of North America, Erigeron salmonensis Brunsfeld & G. L. Nesom, 1989. Salmon River fleabane
3. https://www.jstor.org/stable/2807558?seq=1#page_scan_tab_contents 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