Hackelia floribunda (Lehm.) I.M. Johnst.
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 areas along streams; occasionally in moist meadows. Associated with Salix spp., Agastache urticifolia, and Castilleja miniata. This species is nearly impossible to tell from some forms of H. micrantha without fairly mature nutlets. H. floribunda nutlets are without intramarginal prickles, whereas intramarginal prickles are present in H. micrantha. I have based identification of specimens number 428 and 480 on their apparant biennial or short-lived perennial habit ( characterized by a simple caudex and/or basal rosette of leaves). On the other hand number 395 (H. micrantha) was based on the presence of an obviously perennial branched caudex. As can be seen from number 1489, which has a branched caudex but no intramarginal prickles, these identifications are not entirely reliable. 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 480, 6/29/1977-7/4/1977
IDS, Accession: 2012.012, Barcode: IDS0018641