]> GH barcode-01856638 United States of America Arizona 14.1 miles e. of Jacob Lake in vicinity of House Rock, in the Colorado River basin just before the road climbs on to the plateau; a weed along gravelly road embankment. Argemone rotundata Rydberg Rydberg 2020-05-22 14:45:42 G. B. Ownbey & F. Ownbey