| Classification | Apiaceae: Sium |
| Barcode(s) | 00872631 |
| 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 | Sium of Owl Swamp |
| Date Collected | 1857-08-29 |
| Remarks | [“Aug. 29. P. M. To Owl Nest Swamp with C. . . The large and broad-leafed sium which grows [here] is, judging from its seed, the same as the common.” Journal 10: 17-18. 1857] |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/b3bbf96a-4680-4661-bbd7-342abb68d25e |
| Harvard University Herbaria Barcode | 00872631 |
| Herbarium | GH |
| Family | Apiaceae |
| Determination | Sium suave Walter |
| Determination Remarks | [label name] [current name] |
| Subcollection | Thoreau Herbarium |
| Phenology | FlowerAndFruit |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
