| Name | Calamagrostis coarctata Eaton |
| Authorship | Eaton |
| Rank | Species |
| Placed in | Calamagrostis Adanson |
| GUID | urn:lsid:ipni.org:names:325303-2 |
| Citation | 1829 Man. Bot. (A. Eaton), ed. 5. 144 |
| Holdings | 106 Specimens held in the Harvard University Herbaria identified as Calamagrostis coarctata Eaton |
| Identification made in | [no date] (102), 2013 (4) |