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Carduus tenuiflorus

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Carduus tenuiflorus
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Carduus
Species:
C. tenuiflorus
Binomial name
Carduus tenuiflorus

Carduus tenuiflorus is a species of flowering plant in the family Asteraceae. It is known variously as slender-flower thistle,[1] sheep thistle,[1] shore thistle,[1] slender thistle,[1] winged plumeless thistle,[2] winged slender thistle[1] and winged thistle,[1] . It is native to western Europe and Northwest Africa, and is an introduced species elsewhere.

Description[edit]

Carduus tenuiflorus may exceed 2 metres (6.6 ft) in height. Its tall stem is ridged with wings and has long spines which may be several centimeters in length. The dull olive-green leaves are lobed and wrinkled and may fold and crease themselves.[citation needed]

The inflorescences may hold up to 20 flower heads which are somewhat rounded, covered in wide, spiny phyllaries, and packed with pale pink to bright purple long-tubed disc florets. This is a tenacious weed of roadsides, fields, and disturbed areas.

Distribution[edit]

Carduus tenuiflorus is native to western North Africa in: northern Algeria, Morocco, and Tunisia; Macaronesia; and much of western Europe in: Belgium, France, including Corsica, Ireland, Italy including Sardinia and Sicily, the Netherlands, Portugal, Spain including the Balearic Islands, and the United Kingdom.[1][3][4]

Introduced species[edit]

It has become naturalised in South Africa, India, Australasia, Southern South America, regions of the United States, and elsewhere.[1] It is an invasive species in California.[5]

References[edit]

  1. ^ a b c d e f g h i  Carduus tenuiflorus was first described and published in Flora Londinensis 2(6): t. 55 (168,169). 1793. "Carduus tenuiflorus". Germplasm Resources Information Network. Agricultural Research Service, United States Department of Agriculture. Retrieved January 23, 2012.
  2. ^ USDA
  3. ^ "Carduus tenuiflorus Curtis". Plants of the World Online. Retrieved 26 April 2024.
  4. ^ "Carduus tenuiflorus". worldplants.de. Retrieved 26 April 2024.
  5. ^ Cal-IPC (California Invasisive Plant Council): Carduus tenuiflorus. accessed 4.8.2013

External links[edit]

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