]> GH barcode-00379557 United States of America California just north of Sulphur Works mud volcanoes, Lassen Volcanic Nat. Park, no. Tehama Co. Erysimum perenne (S. Watson ex Coville) Abrams (S. Watson ex Coville) Abrams 2012-11-28 10:26:19 G. B. Rossbach & R. P. Rossbach