| Erigeron peregrinus (Banks ex Pursh) Greene | |
| Publ. & Syn. | Greene, Pittonia 3: 166 (1897). - Aster peregrinus Banks ex Pursh, Fl. Amer. Sept. 2: 556 (1813). Holotype (BM): Alaska: the Aleutian Islands, "Unalaschka", leg. D. Nelson. |
| Notes | Hultén (1968a) and Cody (1996) recognized a widely distributed Cordilleran Erigeron peregrinus with two races: the northern subsp. peregrinus and the more southern subsp. callianthemus (Greene) Cronquist (E. callianthemus Greene), both reported to reach non-arctic parts of Alaska and the Yukon Territory and subsp. peregrinus to reach the Borderline Arctic in the Goodnews Bay area in southwestern Alaska. Nesom (2006b) distinguished between two species: a northern Cordilleran E. peregrinus (with two varieties) and a more widely Cordilleran E. glacialis (Nutt.) A. Nelson (with two varieties). He synonymized E. callianthemus with E. glacialis var. glacialis. |
| Chromosomes | 18 (2x). - Canada (W), U.S.A. (W). - Several reports for E. peregrinus + E. glacialis. |
| Geography | Amphi-Pacific: (ALA). |
| Distribution | N = F E = b AW = b [ key ] |
| Parent taxon | Erigeron L. |
| PAF ID | 860719 |