Centaurea calcitrapa L.
  • Sp. Pl. 2: 917. 1753
  • Centaurée étoilée


Cite taxon page as 'WFO (2021): Centaurea calcitrapa L. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000137211. Accessed on: 27 Oct 2021'

General Information

Annuals, biennials, or short-lived perennials, 20–100 cm. Stems 1–several, often forming rounded mounds, puberulent to loosely tomentose. Leaves puberulent to loosely gray-tomentose, becoming ± glabrous, minutely resin-gland-dotted; proximal leaves petiolate, blades 10–20 cm, 1–3 times pinnately dissected, rosette with central cluster of spines; mid sessile, not decurrent, blades ovate, usually less than 10 cm, narrowly lobed; distal blades linear to oblong, entire to shallowly lobed. Heads disciform, borne singly or in leafy cymiform arrays, sessile or short-pedunculate. Involucres ovoid, 15–20 × 6–8 mm. Principal phyllaries: bodies greenish or stramineous, ovate, scarious-margined, appendages stramineous, spiny fringed at base, each tipped by a stout spreading spine 10–25 mm. Inner phyllaries: appendages truncate, spineless. Florets 25–40; corollas purple, all ± equal, 15–24 mm; sterile corollas slender. Cypselae white or brown-streaked, 2.5–3.4 mm, glabrous; pappi 0. 2n = 20.

  • Provided by: [C].Flora of North America @ efloras.org
    • Source: [
    • 1
    • ]. 

    "Branching biennial 1–8 dm, arachnoid-villous or glabrate; lvs small, pinnatifid with narrow lobes, or the upper entire; heads numerous, narrow; invol 10–18 mm, its bracts weakly spinose-ciliate and stoutly spine-tipped, the larger spines 1–3 cm; fls few, purple; pappus none; 2n=18. Native of Europe, now widespread in the U.S. as a roadside weed. June–Sept."

  • Provided by: [E].New York Botanical Garden
    • Source: [
    • 2
    • ]. 

    Morphology

    15–50 cm hoch, sparrig-ästig. Stängel nicht filzig und nicht geflügelt. Blätter fiederschnittig, Zipfel schmal, stachelspitzig gezähnt, die oberen sitzend, nicht herablaufend. Köpfe end- und seitenständig. Hülle eiförmig, ca. 1,5 cm lang.

  • Provided by: [D].Flora Helvetica – Illustrierte Flora der Schweiz
    • Source: [
    • 3
    • ]. 

    Annual or biennial herb, up to 600 mm high. Stems thin, wiry, not winged, glabrous. Leaves alternate; blade elliptic or obovate in outline, deeply pinnatifid almost to midrib, segments linear to narrowly elliptic, margins denticulate, lightly pubescent; basal leaves petiolate, stem leaves sessile. Heads discoid, 15-20 mm long, solitary. Involucral bracts glabrous, in a few rows, imbricate, bracts tipped with rigid, yellow spines, 15-25 mm long, often with shorter spines at base of central spine. Flowers: disc florets only, bright purple; Apr. Fruit with cypsela oblong. Pappus absent.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 4
    • ]. 

    Ecology

    7–10. Wegränder, Ödland, meist adventiv, kollin. Süd- und Südwestschweiz.

  • Provided by: [D].Flora Helvetica – Illustrierte Flora der Schweiz
    • Source: [
    • 3
    • ]. 

    Habitat

    Dwarf Karroid Shrubland.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 4
    • ]. 

    Distribution

    Native to Europe.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 4
    • ]. 

    Other Local Names

    NameLanguageCountry
    Centaurée étoiléeFrenchCH
    Fiordaliso stellato, CalcatreppolaItalianCH
    Stern-FlockenblumeGermanCH

      Bibliography

     Information From

    Compositae
    CC0 1.0 Universal (CC0 1.0). https://creativecommons.org/publicdomain/zero/1.0
    • A CC0 1.0 Universal (CC0 1.0).
    e-Flora of South Africa
    e-Flora of South Africa. v1.21. 2018. South African National Biodiversity Institute. http://ipt.sanbi.org.za/iptsanbi/resource?r=flora_descriptions&v=1.21
    • B All Rights Reserved
    Flora of North America @ efloras.org
    http://www.efloras.org/flora_page.aspx?flora_id=1
    'Flora of North America @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=1 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • C Flora of North America Association
    Flora Helvetica – Illustrierte Flora der Schweiz
    http://www.flora-helvetica.ch
    Flora Helvetica – Illustrierte Flora der Schweiz, Konrad Lauber, Gerhart Wagner, Andreas Gygax. Haupt Verlag 2018.
    • D All Rights Reserved
    New York Botanical Garden
    Descriptions of plants should be attributed to the full citation for each individual article, chapter or book that is the source for each record, which should include the authors of original publication.
    • E Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • F CC0 1.0 Universal (CC0 1.0).