]> GH barcode-00427840 United States of America California near the crest of the ridge between Silverado Canyon and Sweetwater Canyon, on the Sweetwater Canyon side, Sweetwater Mts. ca 75 km west of Hawthorne, Nevada ca T.7 N., R.24 E. Senecio pattersonensis Hoover Hoover 2013-03-21 15:23:17 A. J. Cronquist