Dear Joe ; More than likely I. missouriensis - widespread distribution and locally very abundant. Contrary to the name's expectations it DOES NOT grow in Missouri and I can barely keep it alive for even a year. Best Jim W. -- Dr. James W. Waddick 8871 NW Brostrom Rd. Kansas City Missouri 64152-2711 USA Ph. 816-746-1949 Zone 5 Record low -23F Summer 100F +