| Classification | Cyperaceae: Eleocharis |
| Harvard University Herbaria Barcode(s) | 00015541 |
| Type Status | Holotype |
| Collector | M. L. Fernald & A. J. Eames |
| Collector number | 139 |
| Country | United States of America |
| State | Massachusetts |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Massachusetts: Middlesex County: Tewksbury |
| Locality | In Sphagnum overlying sand, margin of Round Pond |
| Date Collected | 1909-09-18 |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/5e68d68f-74dd-46ce-8649-993a3ea2555c |
| Harvard University Herbaria Barcode | 00015541 |
| Herbarium | GH |
| Family | Cyperaceae |
| Type Status | Holotype |
| Holotype of | Eleocharis tuberculosa f. retrorsa Svenson |
| Determination Remarks | [is filed under name] |
| Taxon Reference | (for Eleocharis tuberculosa f. retrorsa Svenson) Rhodora 1937. 39: 250. |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
