Taraxacum 


Cite taxon page as 'WFO (2021): Taraxacum . Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-4000037583. Accessed on: 26 Sep 2021'

General Information

"Fls all ligulate and perfect, yellow, mostly numerous; invol bracts biseriate, the outer usually shorter than the inner and often reflexed; achenes columnar or thickly fusiform, terete or 4–5-angled, longitudinally sulcate or ribbed, ordinarily muricate or tuberculate at least above, commonly topped by a smooth, conic or pyramidal cusp that tapers to a slender beak, or rarely beakless; pappus of numerous white capillary bristles; taprooted, lactiferous, perennial, scapose herbs, the lvs all basal and rosulate, entire to pinnatifid or subbipinnatifid. 60, mostly N. Temp. Spp. confluent through polyploidy and apomixis. Taxonomy and nomenclature in utter confusion. We here define spp. broadly and follow traditional nomenclature."

  • Provided by: [B].New York Botanical Garden
    • Source: [
    • 6
    • ]. 

    Morphology

    Pappus many-seriate consisting of numerous slender, unequal setae.

  • Provided by: [C].Plants Of the World Online Portal - FZ
    • Source: [
    • 4
    • ]. 

    Style branches long slender, sweeping hairs long.

  • Provided by: [C].Plants Of the World Online Portal - FZ
    • Source: [
    • 4
    • ]. 

    Achenes fusiform-oblanceolate, many-ribbed, narrowed and shortly conical above before tapering ± abruptly into a slender stalk-like beak (rostrum), beaks rarely absent, the ribs antrorsely muricate or echinate above.

  • Provided by: [C].Plants Of the World Online Portal - FZ
    • Source: [
    • 4
    • ]. 

    Corollas yellow (white), ligulate.

  • Provided by: [C].Plants Of the World Online Portal - FZ
    • Source: [
    • 4
    • ]. 

    Anthers sagittate at the base with shortly setaceous-acuminate auricles.

  • Provided by: [C].Plants Of the World Online Portal - FZ
    • Source: [
    • 4
    • ]. 

    Involucres oblong-campanulate; phyllaries 2-seriate, the inner series erect, the outer series shorter and spreading or recurved.

  • Provided by: [C].Plants Of the World Online Portal - FZ
    • Source: [
    • 4
    • ]. 

    Receptacle ± flat, epaleate, pitted.

  • Provided by: [C].Plants Of the World Online Portal - FZ
    • Source: [
    • 4
    • ]. 

    Leaves radical, rosulate, entire, sinuate-dentate or runcinate.

  • Provided by: [C].Plants Of the World Online Portal - FZ
    • Source: [
    • 4
    • ]. 

    Perennial scapigerous herbs with simple or branched taproots.

  • Provided by: [C].Plants Of the World Online Portal - FZ
    • Source: [
    • 4
    • ]. 

    Scapes 1-many, simple, hollow; capitula large solitary terminal.

  • Provided by: [C].Plants Of the World Online Portal - FZ
    • Source: [
    • 4
    • ]. 

    Corolla yellow, rarely whitish

  • Provided by: [E].Plants Of the World Online Portal - FTEA
    • Source: [
    • 5
    • ]. 

    Achenes fusiform, with a long beak; pappus of barbellate bristles.

  • Provided by: [E].Plants Of the World Online Portal - FTEA
    • Source: [
    • 5
    • ]. 

    Leaves usually pinnatilobed

  • Provided by: [E].Plants Of the World Online Portal - FTEA
    • Source: [
    • 5
    • ]. 

    Capitula with phyllaries in two unequal rows

  • Provided by: [E].Plants Of the World Online Portal - FTEA
    • Source: [
    • 5
    • ]. 

    Perennial herbs with a rosette of leaves and a solitary capitulum on a leafless, hollow scape

  • Provided by: [E].Plants Of the World Online Portal - FTEA
    • Source: [
    • 5
    • ]. 

    Herbes'vivaces; souche principale pivotante, forte; tiges 1 ou plusieurs, ne dépassant pas ou guère le niveau du sol.'Feuilles'alternes, en rosette basilaire, simples, entières, dentées ou diversement découpées.'Capitules'solitaires au sommet de scapes naissant de la rosette foliaire; bractées involucrales en deux cercles, les externes plus courtes et généralement plus larges et à bords souvent plus pâles, les internes dressées et ± linéaires; réceptacle ± plan, dépourvu de paillettes.'Fleurs'à ligule généralement jaune, souvent avec une ligne foncée sur la face dorsale; style à branches grêles, obtuses au sommet.'Akènes à corps fusiforme à obovoïde, souvent finement épineux dans le haut, ordinairement prolongé par un bec grêle situé au sommet d'un cône ± différencié; pappus composé de nombreux cercles de soies simples, rugueuses, ordinairement blanches.\n\t\t\t\tGenre de la zone tempérée de l'hémisphère nord et de l'Amérique du Sud tempérée; divers taxons sont naturalisés en dehors de cette aire. Taxons très nombreux, pour la plupart décrits au rang spécifique; environ 1200 taxons en Europe, certains diploïdes et se reproduisant sexuellement, la plupart polyploïdes, parfois aneuploïdes, et apomictiques facultatifs ou obligés. Pour la Flore : 1 seule espèce (au sens large), introduite.

  • Provided by: [D].Flore d'Afrique Centrale
    • Source: [
    • 7
    • ]. 

    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).
    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.
    • B Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
    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
    • C
    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 - 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
    • E
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • F CC0 1.0 Universal (CC0 1.0).