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American star-thistle

Scientific Name: Centaurea americana

Family: Asteraceae

Category: Dicot

Growth: Forb/herb

Duration: Annual

Other Names:

       

Centaurea americana: American Starthistle (Basketflower)

Considerations for Pets

  • While described as lacking the "prickly characteristics" of thistles, it is important to observe your pets around this plant, especially if they tend to ingest plant material.

Considerations for Children

  • While described as lacking the "prickly characteristics" of thistles, it is important to observe children around this plant, especially if they tend to ingest plant material.

Common Names

  • Scientific Name: Centaurea americana
  • Common Names: American Starthistle, American Basketflower, Basket Flower, Star Thistle, Shaving Brush, Powderpuff Thistle, Cardo del Valle, American Knapweed, Thornless Thistle, Golden Starthistle, Yellow Cockspur.

Taxonomy and Nomenclature

  • Scientific Name: Centaurea americana
  • Synonym: Plectocephalus americanus
  • Family: Composite (Asteraceae)

Distribution and Habitat

  • Native to the southern central United States, particularly Texas.
  • Also present in North America.

Ecological Role

  • Centaurea solstitialis (Yellow Starthistle), a related species, is mentioned as an invasive species in North America. Yellow Starthistle may kill desirable grasses.

Morphological Characteristics

  • Resembles a spineless thistle.
  • Centaurea solstitialis (Yellow Starthistle) is described as an annual herbaceous plant with gray-green foliage.

Interactions with Other Organisms

  • American finches feed on Centaurea solstitialis (Yellow Starthistle) seeds.

Further Information

  • USDA's National Invasive Species Information Center
  • Discover Life
  • Flora of North America
  • USDA-NRCS PLANTS Database
  • Weeds of the West. Western Weed Science Society of America