| Classification | Cyperaceae: Eleocharis | 
| Harvard University Herbaria Barcode(s) | 00027754 | 
| Type Status | Holotype | 
| Collector | M. L. Fernald & B. H. Long | 
| Collector number | 18021 | 
| Country | United States of America | 
| State | Massachusetts | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Massachusetts: Barnstable County: Falmouth | 
| Locality | Wet peaty border of Shallow (Lily) Pond | 
| Date Collected | 1919-08-23 | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/5737eeea-0b04-427b-835f-cbdde157fc75 | 
| Harvard University Herbaria Barcode | 00027754 | 
| Herbarium | GH | 
| Family | Cyperaceae | 
| Type Status | Holotype | 
| Holotype of | Eleocharis obtusa var. ellipsoidalis Fernald | 
| Verified by | A. E. Schuyler | 
| Determination Remarks | [filed under] | 
| Taxon Reference | (for  Eleocharis obtusa var. ellipsoidalis Fernald) Rhodora 1929. 31: 218. | 
| Sex | not determined | 
| Phenology | NotDetermined | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |