Rumex salicifolius Weinm. var. mexicanus (Meisn.) C.L. Hitchc.
Annotated by Charles F. Williams, 2010. Sources: FPNW/USDA-NRCS Plants Database. Remarks: taxonomic update

Idaho: Fremont County: Site 17. Targhee National Forest. Along Henry’s Lake Outlet upstream from the bridge on the road from Island Park Lodge to Big Springs. Some of the collections may have been made in sections 17,18, 19, and 21, but they were all made in or in the margins of, Henry’s Lake Flats; Elevation 1950m. Elev. 1950 m.
44.52329° N, 111.2870235° W; T14N R44E S20 SW 1/4
Datum: WGS 84. Uncertainty: 500 meters. Coordinate Source: BioGeomancer.
Open areas near streams and lakes. Associated with Carex raynoldsii, Stellaria longipes, and Clematis hirsutissima; or with Potentilla glandulosa, Phacelia hastata, and Juniperus communis. Voucher: Whitehead, G.S. 1983. M.S., Idaho State U. Flora of the Island Park Geothermal Study Area. Duplicates to: IDS, RM. Phenology: Fruits.

Gordon S. Whitehead 442, 6/29/1977-7/4/1977
IDS, Accession: 2012.012, Barcode: IDS0021637