| Classification | Cyperaceae: Cyperus |
| Harvard University Herbaria Barcode(s) | 00267979 |
| 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: Concord |
| Locality | clam shell field |
| Elevation | 0 m |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/9c701695-c4f2-4b45-8c82-ee5868863648 |
| Harvard University Herbaria Barcode | 00267979 |
| Herbarium | NEBC |
| Previous ownership | Gift of Geroge R. Cooley [Ex] Jesup Herbarium [HNH] 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 | Cyperus lupulinus var. macilentus (Fernald) A. Haines |
| Determined by | Kittredge, Walter Tobey |
| Date Determined | 2013 |
| Determination Remarks | [filed under] [current name] |
| Family | Cyperaceae |
| Determination | Cyperus filiculmis Vahl |
| Determined by | [H. D. Thoreau (scripsit) on original field label] |
| Determination Remarks | [label name] |
| Family | Cyperaceae |
| Determination | Cyperus filiculmis var. macilentus Fernald |
| Determined by | [M. L. Fernald (scripsit) on provenance label] |
| Family | Cyperaceae |
| Determination | Cyperus filiculmis Vahl |
| Determined by | [E. S. Hoar (scripsit) on his transcription label] |
| Sex | not determined |
| Phenology | Fruit |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
