| Classification | Juncaceae: Juncus | 
| Harvard University Herbaria Barcode(s) | 00105957 | 
| Type Status | Isolectotype | 
| Collector | A. Kellogg | 
| Collector number | 10 | 
| Country | United States of America | 
| State | California | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: California | 
| Locality | Shaded shores of Bolinas Bay near San Francisco | 
| Date Collected | 1866-08-12 | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/774b7d8d-832a-41e8-a2e1-fed061235e1d | 
| Harvard University Herbaria Barcode | 00105957 | 
| Herbarium | GH | 
| Family | Juncaceae | 
| Type Status | Isolectotype | 
| Isolectotype of | Juncus effusus var. brunneus Engelmann | 
| Verified by | P. F. Zika | 
| Determination Remarks | [filed under] | 
| Taxon Reference | (for  Juncus effusus var. brunneus Engelmann) Trans. Acad. Sci. St. Louis 1868. 2: 491. | 
| Sex | not determined | 
| Phenology | Fruit | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |