Juncus arcticus Willd. ssp. littoralis (Engelm.) Hultén
[= Juncus balticus ssp. littoralis]
Annotated by Janet Bala, 18 Apr 2018. Sources: USDA-NRCS Plants Database. Remarks: Taxonomic name update; Ray J. Davis herbarium

Idaho: Custer County: Site 3. In a large meadow along Sawmill Creek, above Bear Ck. between Mill Creek campground and Timber Creek campground and near northeast end of Little Lost River valley at the west base of the Lemhi Range. Elev. 7080 ft.
44.3713° N, 113.38563° W
Datum: NAD 83. Uncertainty: 3 meters. Coordinate Source: Specimen Label. Invalid coordinates (located outside county bounds).
On slightly sloping, loamy, mesic, west-facing meadow dominated by Artemisia tridentata ssp. vaseyana. Stems ~ 1 mm thick and somewhat flattened, involucral bract up to about 1/2 as long as proper stem; flowers prophyllate, anthers ~ 1.5 mm long. Phenology: Flowers.

Don H. Mansfield 16256, Jun 18, 2016
With Bob McCoy, Evan Hilpman, and Wes Bascom
IDS, Accession: 2017.016, Barcode: IDS0072269