milk thistle

Noun
  1. Any of several Old World coarse prickly-leaved shrubs and subshrubs having milky juice and yellow flowers;
    Widely naturalized;
    Often noxious weeds in cultivated soil (synset 112039229)
    is a type of: bush, shrub - a low woody perennial plant usually having several major stems
    subtypes: milkweed, sonchus oleraceus - annual Eurasian sow thistle with soft spiny leaves and rayed yellow flower heads
    belongs to: genus sonchus, sonchus - sow thistles
    same as: sow thistle
  2. Tall Old World biennial thistle with large clasping white-blotched leaves and purple flower heads;
    Naturalized in California and South America (synset 112035994)
    is a type of: herb, herbaceous plant - a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests
    belongs to: genus silybum, silybum - small genus of east African herbs
    same as: blessed thistle, holy thistle, lady's thistle, our lady's mild thistle, silybum marianum

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