]> GH barcode-00960891 United States of America Idaho Snake River Plain, 15 airline miles northwest of American Falls on road to Crystal Ice Caves. T.6 S., R.29 E., Sec. between 18 and 17. Elevation 4800 feet. Boechera retrofracta (Graham) A. Löve & D. Löve (Graham) A. Löve & D. Löve 2020-07-14 14:37:02 N. H. Holmgren & P. K. Holmgren