| Name | Erigeron lassenianus Greene | 
| Authorship | Greene | 
| Rank | Species | 
| Placed in | Erigeron Linnaeus | 
| Citation | 1897 Fl. Francisc. 389 | 
| Holdings | 13 Specimens held in the Harvard University Herbaria identified as Erigeron lassenianus Greene | 
| Identification made in | [no date] (13) |