Carduus_tenuiflorus

<i>Carduus tenuiflorus</i>

Carduus tenuiflorus

Species of flowering plant in the daisy family Asteraceae

Carduus tenuiflorus, 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] is a species of flowering plant in the family Asteraceae. It is native to western Europe and Northwest Africa, and an introduced species elsewhere.

Quick Facts Carduus tenuiflorus, Scientific classification ...

Description

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.

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

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

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

  1. [1]
     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. [2]
    USDA
  3. [3]
    "Carduus tenuiflorus Curtis". Plants of the World Online. Retrieved 26 April 2024.
  4. [4]
    "Carduus tenuiflorus". worldplants.de. Retrieved 26 April 2024.
  5. [5]
    Cal-IPC (California Invasisive Plant Council): Carduus tenuiflorus . accessed 4.8.2013
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