| Classification | Cyperaceae: Cyperus |
| Classification 1 | Cyperaceae: Rhynchospora |
| Harvard University Herbaria Barcode(s) | 00028637 |
| Type Status | Holotype |
| Collector | C. A. Weatherby |
| Country | United States of America |
| State | Massachusetts |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Massachusetts: Barnstable County: Dennis |
| Locality | Sandy shore of Simmons Pond |
| Date Collected | 1915-09-30 |
| Habitat | Sandy shore |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/208029b3-7069-487c-9dc2-2876821c40c7 |
| Harvard University Herbaria Barcode | 00028637 |
| Herbarium | NEBC |
| Previous ownership | Ex Herb. C. A. Weatherby |
| Family | Cyperaceae |
| Type Status | Holotype |
| Holotype of | Cyperus ×weatherbianus Fernald |
| Verified by | Kittredge, Walter Tobey |
| Date Determined | 2015 |
| Determination Remarks | [filed under] |
| Taxon Reference | (for Cyperus ×weatherbianus Fernald) Rhodora 1918. 20(239): 190. |
| Family | Cyperaceae |
| Determination | Rhynchospora capitellata (Michaux) Vahl |
| Determined by | G. Moore, M. Garland & D. Goldman (USDA) |
| Date Determined | 2014-05-22 |
| Determination Remarks | [current name] |
| Annotation Text | Plant with abnormal spikelet development |
| Family | Cyperaceae |
| Determination | Rhynchospora sp. |
| Determination Remarks | [label name] |
| Family | Cyperaceae |
| Determination | Cyperus ×weatherbianus Fernald |
| Determined by | [M. L. Fernald (scripsit) annotation on sheet, W. T. Kittredge, 2015] |
| Annotation Text | n. hybr. = Cyperus dentatus x Rhynchospora capitellatus |
| Sex | not determined |
| Phenology | Fruit |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
