| Classification | Cyperaceae: Carex |
| Harvard University Herbaria Barcode(s) | 00267954 |
| Collector | H. D. Thoreau |
| Country | United States of America |
| State | Massachusetts |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Massachusetts: Middlesex County |
| Locality | Sawmill Brook [Concord and Lincoln. Thoreau went to Flints Pond in Lincoln on this date] |
| Date Collected | 1859-06-02 |
| Elevation | 0 m |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/dd830fd5-545a-4ff2-8f12-8da3b218967f |
| Harvard University Herbaria Barcode | 00267954 |
| Herbarium | NEBC |
| Previous ownership | Thoreau’s Herb. [Ex Herbarium of Henry David Thoreau (1817-1862)] Herbarium of Edward S. Hoar. Presented to the New England Botanical Club by Mrs. M. B. L. Bradford, 1912 |
| Family | Cyperaceae |
| Determination | Carex blanda Dewey |
| Determined by | Wiegand, Karl McKay |
| Date Determined | 1922 |
| Determination Remarks | [current name] |
| Family | Cyperaceae |
| Determination | Carex laxiflora Lamarck |
| Determined by | [H. D. Thoreau (scripsit) on original field label] |
| Date Determined | 1989 |
| Determination Remarks | [label name] |
| Annotation Text | Sawmill Brook var. of C. laxiflora fewer flowered & broader leaved & later |
| Family | Cyperaceae |
| Determination | Carex laxiflora var. blanda (Dewey) Boott |
| Determined by | [annotation on provenance label] |
| Family | Cyperaceae |
| Determination | Carex laxiflora Lamarck |
| Determined by | [E. S. Hoar (scripsit) on his transcription label] |
| Annotation Text | var. of Carex laxiflora |
| Sex | not determined |
| Phenology | Fruit |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
