Publication: Revis. N. Amer. Silene. 26. 1947.
selected vouchers: WTU
Notes: FNA includes WA within the distribution of S. scouleri ssp. hallii.
FNA5: "The main center of distribution of subsp. hallii is Colorado, but plants referable to or approaching this subspecies occur along the Rocky Mountains from New Mexico to southern British Columbia and Alberta."