| Name | Erigeron mancus Rydberg |
| Authorship | Rydberg |
| Rank | Species |
| Placed in | Erigeron Linnaeus |
| Citation | 1917 Fl. Rocky Mts. 902, 1067 |
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Erigeron mancus Rydberg |
| Identification made in | [no date] (2), 1943 (1), 1961 (1) |