genus Silybum


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Noun1.genus Silybum - small genus of east African herbsgenus Silybum - small genus of east African herbs  
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
blessed thistle, holy thistle, lady's thistle, Our Lady's mild thistle, Silybum marianum, milk thistle - tall Old World biennial thistle with large clasping white-blotched leaves and purple flower heads; naturalized in California and South America