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|Noun||1.||genus Carduus - genus of annual or perennial Old World prickly thistles|
asterid dicot genus - genus of more or less advanced dicotyledonous herbs and some trees and shrubs
aster family, Asteraceae, Compositae, family Asteraceae, family Compositae - plants with heads composed of many florets: aster; daisy; dandelion; goldenrod; marigold; lettuces; ragweed; sunflower; thistle; zinnia
Carduus crispus, welted thistle - European biennial introduced in North America having flower heads in crowded clusters at ends of branches