Etymology: Onopordum: Latinized version of Greek name for this plant
Plants: erect, biennial forb
Conservation Status: Introduced - adventive
Flora of North America: Flora of North America Invasive And Exotic Species of North America: Descriptions, management issues, warnings, photos, etc. USDA Plants Database: Federal Distribution and detailed information including photos USDA Agricultural Research Service (ARS): Images of seeds, fruits, embryos, etc.