Juncus arcticus Willd. ssp. littoralis (Engelm.) Hultén
[= Juncus balticus ssp. littoralis]
Annotated by Charles F. Williams, 10 Dec 2014. Sources: USDA-NRCS Plants Database. Remarks: Ray J. Davis Herbarium (IDS); taxonomic update

Idaho: Owyhee County: Columbia Basin. From Nampa take Hwy 45 south then Hwy 78 east. Right on Upper Reynolds Creek Rd., right on Hootenany Rd., left on Salmon Cr. Rd. After 2.4 km site is on left. Elev. 1182 m.
43° 14' 30" N, 116° 46' 45" W
Coordinate Source: Specimen Label.
Riparian. Associate with Typha latifolia, Eleocharis palustris, Polypogon monspeliensis, Hordeum brachyantherum, sedge. Grasslike, 45cm. Plant 40-60cm in height. Non-showy flower with 2 long stigmas protruding from flower, single stem with inflorescence near terminal end of stem. Location of duplicate vouchers: Bureau of Land Management, USA. RBG KEW Herbarium SCD Serial No.: 0170859. Phenology: Fertile.

R. Buckingham ID BFO 33, Jul 24, 2002
With K. Hemauer, S. Lundberg, C. Simson
IDS, Accession: 2014.001, Barcode: IDS0024714