| Name | Calamagrostis breweri Thurber |
| Authorship | Thurber |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Calamagrostis Adanson |
| Citation | 1864 Trans. Calif. State Agric. Soc. 136 |
| Holdings | 34 Specimens held in the Harvard University Herbaria identified as Calamagrostis breweri Thurber |
| Identification made in | [no date] (22), 1990 (11), 2005 (1) |