Rorippa alpina (S. Watson) Rydb.
Annotated by Charles F. Williams, 2012. Sources: USDA-NRCS Plants Database. Remarks: taxonomic update

Idaho: Caribou County: Caribou Mountain. Roadway from camp at Willow Creek Junction taking cut-off road keeping to “Horseshoe” or basin between North and East ridges. Base of rock slide of North Ridge - West Slope of Caribou Mountain. 100 ft. up rocky trail to summit on West slope of North ridge. Exposed soil at edge of rock slide of North ridge and fringe of woods. Elevation: 8900 ft. Elev. 8900 ft.
43.0968152° N, 111.3193559° W; T4S R44E S5 SE1/4
Datum: WGS84. Uncertainty: 500 meters. Coordinate Source: BioGeomancer. Invalid coordinates (located outside county bounds).
More or less open area. At base of slide in barren depression about 15 ft wide growing with nothing else. Glabrous, siliques oval. Phenology: Fruits.

Thomas Dieffenbach 00393, Jul 29, 1977
IDS, Accession: 2012.010, Barcode: IDS0054095