| Name | Carex adusta var. congesta W. Boott |
| Authorship | W. Boott |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Carex adusta Boott |
| GUID | urn:lsid:ipni.org:names:45674-2 |
| Citation | 1880 Bot. California 2: 238 |
| Holdings | 6 Specimens held in the Harvard University Herbaria identified as Carex adusta var. congesta W. Boott |
| Identification made in | [no date] (2), 1939 (1), 2011 (3) |