Senecio jacobaea

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Definition

Noun: * A widespread European weed with yellow daisylike flowers; known to be toxic to livestock, especially cattle, if eaten in large quantities. This term refers specifically to a species of flowering plant in the genus Senecio.

Usage and Examples
  • Noun:
    • The field was covered in the bright yellow blooms of Senecio jacobaea.
    • Farmers must manage pastures carefully to control Senecio jacobaea, as it is poisonous to grazing animals.
Advanced Usage
  • In botanical and agricultural contexts: The name is used formally to identify the specific plant species. It is often discussed in relation to pasture management, toxicology, and ecology.
    • The study focused on the alkaloid content of Senecio jacobaea.
Variants and Related Words
  • Common Ragwort (n): The most widely used common name for this plant in English.
  • Jacobaea vulgaris (n): A current botanical synonym for the same species.
  • Tansy Ragwort (n): Another common name, particularly used in North America.
  • Stinking Willie (n): A regional/common name used in some areas, particularly the United Kingdom.
Synonyms
  • Ragwort: A general term often used interchangeably, though it can refer to other related species.
  • Benweed: A less common regional name.
Notes on Meaning
  • The primary meaning is as a specific plant species. Its notoriety stems from two key characteristics: its status as a prolific weed in many regions and its toxicity due to pyrrolizidine alkaloids, which can cause liver damage in animals.
Noun
  1. widespread European weed having yellow daisylike flowers; sometimes an obnoxious weed and toxic to cattle if consumed in quantity

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