Hackelia micrantha (Eastw.) J.L. Gentry
Annotated by Gordon S. Whitehead, 29 Jun 1977. Sources: FPNW.

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.
Moist open flat meadows often in local shade of pines or willows. Associated with Pinus contorta, Poaceae spp., Wyethia helianthoides, and Salix spp. Widespread. H. floribunda is nearly impossible to tell from some forms of this species without fairly mature nutlets. H. floribunda nutlets are without intramarginal prickles, whereas intramarginal prickles are present in this species. Voucher: Whitehead, G.S. 1983. M.S., Idaho State U. Flora of the Island Park Geothermal Study Area. Duplicates to: IDS, RM. Phenology: Flowers.

Gordon S. Whitehead 450, 6/29/1977-7/4/1977
IDS, Accession: 2012.012, Barcode: IDS0018619