]> GH barcode-01816167 United States of America Arizona Flagstaff area: Southeast of Flagstaff and west of Walnut Canyon National Monument. Walnut Canyon Trail, between trailhead and canyon escarpment; USGS Flagstaff E 7-1/2' topo. T 21N, R 8E, S 28 or adj. 27 or 33; ca. 35°10'N, 111°32-33' W Astragalus humistratus var. humivagans (Rydberg) Barneby (Rydberg) Barneby 2022-08-04 12:42:13 S. D. White