| Erigeron peregrinus (Pursh) Greene ssp. callianthemus (Greene) Cronquist
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| Erigeron peregrinus (Pursh) Greene ssp. callianthemus (Greene) Cronquist var. callianthemus (Greene) Cronquist
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| Erigeron peregrinus (Pursh) Greene ssp. peregrinus
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| Erigeron peregrinus (Pursh) Greene ssp. peregrinus var. dawsonii Greene
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| Erigeron peregrinus (Pursh) Greene var. angustifolius (A. Gray) Cronquist
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| Erigeron peregrinus (Pursh) Greene var. callianthemus (Greene) Cronquist
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| Erigeron peregrinus (Pursh) Greene var. eucallianthemus Cronquist
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Erigeron peregrinus (Pursh) Greene var. peregrinus [FNA20]
[According to FNA20, specimens previously attributed to Erigeron peregrinus var. peregrinus in WA are now treated as Erigeron glacialis var. glacialis, and that E. peregrinus var. peregrinus is found no further south than British Columbia. .
Douglas et al. (1998) synonymize WA endemic var. thompsonii.]
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| Erigeron peregrinus (Pursh) Greene var. scaposus (Torr. & A. Gray) Cronquist
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