| Classification | Juncaceae: Juncus | 
| Barcode(s) | 02466850 | 
| Collector | P. F. Zika | 
| Collector number | 29086 | 
| Country | United States of America | 
| State | Oregon | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Oregon: Morrow County | 
| Locality | S shore of Columbia River reservoir, Lake Umatilla, N of I-84, 2.2 air km SE of E end of Crow Butte Island | 
| Georeference | 45.8363, 119.79096 W  | 
| Date Collected | 2017-08-19 | 
| Verbatim Elevation | 80 m | 
| Habitat | marshy flats near mud and cobble shoreline, full sun, over basalt | 
| Container | USAC Columbia River Plant Survey | 
| Frequency | common | 
| Remarks | [associated taxa:] with Juncus balticus, Eleocharis acicularis, E. macrostachya, Lindernia dubia, Salix exigua | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/1fad3922-89f6-4513-b5da-617b2978159a | 
| Harvard University Herbaria Barcode | 02466850 | 
| Herbarium | GH | 
| Family | Juncaceae | 
| Determination |  Juncus compressus Jacquin | 
| Determination Remarks |  [filed under] [current name] | 
| Sex | not determined | 
| Phenology | NotDetermined | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |