Centaurea 


Cite taxon page as 'WFO (2020): Centaurea . Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-4000007161. Accessed on: 30 Nov 2020'

General Information

"Heads discoid, the fls sometimes all tubular and perfect, or more often the marginal ones neutral, with enlarged, irregular, falsely radiate cor; invol bracts imbricate in several series, dry, sometimes spine-tipped, more often some of them with enlarged, scarious or hyaline, erose or lacerate or pectinate terminal appendage, seldom all merely rounded above and entire; receptacle nearly flat, densely bristly; cors anthocyanic to yellow or white, with slender tube, short throat, and long narrow lobes; anthers with a narrow, firm, apical appendage, evidently (though often shortly) tailed at base; styles with a thickened, often hairy ring and an abrupt change of texture at the base of the papillate branches; achenes obliquely or laterally attached to the receptacle, seldom evidently nerved; pappus of several series of graduated bristles or narrow scales, often much reduced, or wanting; herbs with alternate or all basal, entire to pinnatifid lvs. 500+, mostly Old World."

  • Provided by: [C].New York Botanical Garden
    • Source: [
    • 10
    • ]. 

    Morphology

    Pappus many-seriate of unequal barbellate (or plumose) scale-like setae, persistent (caducous or absent).

  • Provided by: [E].Plants Of the World Online Portal - FZ
    • Source: [
    • 8
    • ]. 

    Achenes oblong or obovoid, ± laterally compressed, apex rounded to truncate, glabrous when ripe, attachment-scar lateral-oblique, ± concave.

  • Provided by: [E].Plants Of the World Online Portal - FZ
    • Source: [
    • 8
    • ]. 

    Involucre ovoid-subglobose, hemispheric or nearly cylindric, araneose or glabrous; phyllaries many-seriate, imbricate, coriaceous, with a ± patent pectinate or spinose appendage.

  • Provided by: [E].Plants Of the World Online Portal - FZ
    • Source: [
    • 8
    • ]. 

    Capitula solitary (or paniculate), heterogamous, radiant.

  • Provided by: [E].Plants Of the World Online Portal - FZ
    • Source: [
    • 8
    • ]. 

    Florets tubular, the outer series neuter sometimes with staminodes, the inner florets hermaphrodite; corollas whitish, purple, pink, blue or yellow, slender tubular below, dilated and deeply 5(8)-lobed above; anther bases sagittate, adjacent lobes connate into a short or long tail; style 2-branched, abruptly swollen below the branches with a ring of hairs at or below the swelling; the branches erect, long somewhat flat and ± connate, diverging only near the tips.

  • Provided by: [E].Plants Of the World Online Portal - FZ
    • Source: [
    • 8
    • ]. 

    Receptacle densely setose, the setae smooth and twisted.

  • Provided by: [E].Plants Of the World Online Portal - FZ
    • Source: [
    • 8
    • ]. 

    Leaves alternate (or radical), entire, dentate or sometimes pinnatilobed (spiny), bases sometimes decurrent on the stem.

  • Provided by: [E].Plants Of the World Online Portal - FZ
    • Source: [
    • 8
    • ]. 

    Perennial or annual herbs (shrubs), hirsute-scabridulous or tomentose-araneose, often with sessile glands, rarely glabrous.

  • Provided by: [E].Plants Of the World Online Portal - FZ
    • Source: [
    • 8
    • ]. 

    Leaves alternate, usually dissected

  • Provided by: [B].Plants Of the World Online Portal - FTEA
    • Source: [
    • 9
    • ]. 

    Herbs or subshrubs

  • Provided by: [B].Plants Of the World Online Portal - FTEA
    • Source: [
    • 9
    • ]. 

    Florets with linear, sagittate anthers, with distal lanceolate appendage; style shortly bifid, abruptly swollen below the branches and with a ring of hairs at or below the swelling

  • Provided by: [B].Plants Of the World Online Portal - FTEA
    • Source: [
    • 9
    • ]. 

    Capitula solitary or corymbose, heterogamous and disciform or radiant, or homogamous; phyllaries multiseriate, with fimbriate appendages; receptacle densely setose

  • Provided by: [B].Plants Of the World Online Portal - FTEA
    • Source: [
    • 9
    • ]. 

    Achenes somewhat compressed; pappus generally double.

  • Provided by: [B].Plants Of the World Online Portal - FTEA
    • Source: [
    • 9
    • ]. 

    Herbes'vivaces ou suffrutex, rarement herbes annuelles.'Feuilles'alternes, parfois groupées en rosette basilaire, dentées ou ± profondément découpées (Jusqu'à pennati- à bipennatiséquées, rarement tout-à-fait entières.'Capitules'hétérogames, multiflores, petits à assez grands, généralement pédonculés, solitaires ou groupés en inflorescences paniculiformes. Réceptacle le plus souvent plan, densément sétacé. Involucre plurisérié, ovoïde à subglobuleux; bractées involucrales imbriquées, terminées par un appendice spinescent ou pectiné.'Fleurs'tubuleuses, les périphériques femelles, les centrales hermaphrodites, rarement les périphériques stériles. Corolle 5-lobée, très étroite, mais chez les fleurs périphériques souvent plus grande et légèrement zygomorphe. Anthères linéaires, sagittées à la base, à appendice lancéolé. Style linéaire dans la partie inférieure, élargi dans la partie supérieure, courtement bifide.'Akènes oblongs ou ovoïdes, souvent comprimés, parfois 4-angulaires, glabres; pappus sétacé ou paléacé, plurisérié; soies ou écailles libres, pouvant être glabres, serrées, barbellées ou plumeuses, rarement pappus absent.\n\t\t\t\tLectotype: Centaurea centaurium L.\n\t\t\t\tGenre englobant plus de 400 espèces râparties surtout en Europe, Asie et Afrique du Nord. En Afrique tropicale on a constaté une douzaine d'espèces. Pour la flore d'Afrique centrale: une espèce.

  • Provided by: [D].Flore d'Afrique Centrale
    • Source: [
    • 11
    • ]. 

    Included Species

      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).
    Plants Of the World Online Portal - FTEA
    https://www.kew.org/science/who-we-are-and-what-we-do/strategic-outputs-2020/plants-of-the-world-online
    http://www.plantsoftheworldonline.org/terms-and-conditions
    • B
    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.
    • C Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
    Flore d'Afrique Centrale
    https://www.floredafriquecentrale.be
    • D http://creativecommons.org/licenses/by/4.0/ Attribution 4.0 International (CC BY 4.0)
    Plants Of the World Online Portal - FZ
    https://www.kew.org/science/who-we-are-and-what-we-do/strategic-outputs-2020/plants-of-the-world-online
    http://www.plantsoftheworldonline.org/terms-and-conditions
    • E
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • F CC0 1.0 Universal (CC0 1.0).