Publication: Sp. Pl. 2: add. 1753
selected vouchers: WTU
Notes: FNA: "Logfia arvensis appears to be basal or nearly so in Logfia and Filagininae (J. D. Morefield 1992); only 2–4 epappose florets are present in most heads.....The earliest specimen confirmed from the flora area was from Bonner County, Idaho, in 1934."