Erythronium idahoense, commonly known as Idaho fawn lily, is a white-flowered plant in the Lily family native to the northwestern United States (Washington, Idaho, and Montana).Kew World Checklist of Selected Plant FamiliesSt. John, Harold & Jones, George Neville. 1929. Research Studies of the State College of Washington 1(2): 97–95, figure 1, plate 5 Its habitats include grasslands and forest openings.

This taxon was listed as Erythronium grandiflorum subsp. candidum in Flora of North America.Flora of North America, Vol. 26 Page 156, Erythronium grandiflorum subsp. candidum Piper, Fl. S.E. Washington. 61. 1914.

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