| Classification | Juncaceae: Juncus | 
| Harvard University Herbaria Barcode(s) | 00057386 | 
| Type Status | Holotype | 
| Collector | H. N. Bolander | 
| Collector number | 4949 | 
| Country | United States of America | 
| State | California | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: California: Mariposa County | 
| Locality | Yosemite Valley [Big Trees] | 
| Date Collected | 1866-07-** | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/8caa2640-2ddd-490a-93c5-804c1ab74a4f | 
| Harvard University Herbaria Barcode | 00057386 | 
| Herbarium | GH | 
| Family | Juncaceae | 
| Type Status | Holotype | 
| Holotype of | Juncus effusus var. exiguus Fernald & Wiegand | 
| Verified by | H. F. Zika | 
| Determination Remarks | [filed under] | 
| Taxon Reference | (for  Juncus effusus var. exiguus Fernald & Wiegand) Rhodora 1910. 12: 87. | 
| Sex | not determined | 
| Phenology | Fruit | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |