| Classification | Caryophyllaceae: Spergularia | 
| Harvard University Herbaria Barcode(s) | 00571481 | 
| Type Status | Holotype | 
| Collector | G. B. Rossbach & R. P. Rossbach | 
| Collector number | 644 | 
| Country | United States of America | 
| State | Washington | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Washington: Pacific County | 
| Locality | near the mouth of the Palix River, Willapa Bay, 15 mi. south of Raymond | 
| Date Collected | 1938-06-26 | 
| Container | Plants of Washington | 
| Substrate | Brackish clay | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/3c546398-27b4-42c0-80aa-d31e923e3378 | 
| Harvard University Herbaria Barcode | 00571481 | 
| Herbarium | GH | 
| Previous ownership | [ex] Dudley Herbarium of Stanford University | 
| Family | Caryophyllaceae | 
| Type Status | Holotype | 
| Holotype of | Spergularia canadensis var. occidentalis R. Rossbach | 
| Verified by | Brach, Anthony Robert | 
| Date Determined | 2015 | 
| Determination Remarks | [filed under] | 
| Family | Caryophyllaceae | 
| Determination | Spergularia canadensis var. occidentalis R. Rossbach | 
| Determination Remarks | [label name] [current name] | 
| Sex | not determined | 
| Phenology | NotDetermined | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |