More than multiple introductions: Multiple taxa contribute to the genesis of the invasive California’s wild artichoke thistle
Janet LEAK-GARCIA, Jodie S. HOLT, Seung-Chul KIM, Lisa MU, José A. MEJÍAS, Norman C. ELLSTRAND
J Syst Evol . 2013, (3): 295 -307 .  DOI: 10.1111/j.1759-6831.2012.00222.x