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whitestem distaff thistle

Scientific Name: Carthamus leucocaulos

Family: Asteraceae

Category: Dicot

Growth: Forb/herb

Duration: Annual

Other Names:

       

Whitestem Distaff Thistle (Carthamus leucocaulos)

The Whitestem Distaff Thistle, scientifically known as Carthamus leucocaulos, is a species of flowering plant belonging to the daisy family (Asteraceae). It is also known by the common names distaff thistle and glaucous starthistle.

Considerations for Pets

  • The plant has a "star shape formed by the spiny" which could pose a risk of injury.

Taxonomy and Nomenclature

  • Scientific Name: Carthamus leucocaulos Sm.
  • Family: Asteraceae (Daisy family)
  • Genus: Carthamus L. (Distaff thistle)
  • Rank: Species
  • Synonyms: Glaucous Star Thistle, Whitestem Distaff Thistle, Distaff Thistle, Kentrophyllum leucocaulon Sm Tausch
  • Alternative Spelling: Carthamnus leucocaulos

Distribution and Habitat

  • Native to Greece and the Southern Aegean Islands of the Mediterranean region.

Ecological Role

  • Considered a noxious weed in some areas.
  • Classified as an exotic species in the U.S.

Morphological Characteristics and Growth Habits

  • It is an annual forb/herb, meaning it's a non-woody plant that isn't a grass and completes its life cycle in one year.
  • Erect herb, typically grows to a height of 35-80 cm.
  • Stems are white to greyish in color, shiny, and have longitudinal ribs.

Additional Information

  • USDA PLANTS Symbol: CALE52

Resources

  • Dave's Garden is mentioned as a source for gardening tips.
  • CalPhotos is referenced for images.
  • EDDMapS is mentioned as a source for distribution maps.
  • Invasive Plant Atlas is listed as a source of species information