genus Onopordum

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Definition

Noun: 1. A taxonomic genus of plants: A genus within the family Asteraceae (Compositae), comprising Eurasian herbaceous plants characterized by spiny leaves and stems, and typically large, thistle-like, purplish flower heads.

Usage
  • Scientific Classification: Used primarily in botanical and scientific contexts to classify a specific group of thistle plants.
    • The plant was identified as a member of genus Onopordum.
    • Several species within genus Onopordum are considered invasive in certain regions.
Advanced Usage
  • "Onopordum acanthium": The most well-known species of this genus, commonly called Scotch thistle or cotton thistle.
    • Onopordum acanthium is often used as a national emblem.
Variants and Related Words
  • Onopordum (n): The standardized, non-italicized form used in common language to refer to the genus.
    • The field was overrun with Onopordum.
  • Onopordum acanthium (n): A species within the genus.
  • Onopordum nervosum (n): Another species within the genus, sometimes called the giant thistle.
Synonyms
  • Cotton thistle genus: A common name reference.
  • Scotch thistle genus: A common name reference.
Notes
  • In botanical nomenclature, the genus name is always capitalized and, in scientific writing, italicized: Onopordum. The term "genus Onopordum" follows the convention of pairing the categorical rank ("genus") with the specific name.
Noun
  1. a genus of Eurasian herbs of the family Compositae with prickly foliage and large purplish flowers

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