Erigeron 


Cite taxon page as 'WFO (2021): Erigeron . Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-4000013785. Accessed on: 22 Oct 2021'

General Information

"Heads usually radiate, the rays pistillate and fertile, white or anthocyanic; invol bracts narrow, herbaceous and equal to scarcely herbaceous and evidently imbricate, but without Aster-like green tips; receptacle flat or nearly so, naked; disk-fls numerous, perfect and fertile, yellow; some spp. with rayless pistillate fls between the disk-fls and ray-fls; style-branches flattened, the appendage short (not over 0.3 mm in ours), acute to more often obtuse, or even obsolete; achenes in our spp. 2–4-nerved; pappus of capillary bristles, with or without a short outer series of minute bristles or scales; herbs with alternate lvs and solitary to numerous, hemispheric to turbinate heads. Typically blooming in spring and early summer (unlike Aster), but some weedy spp. continuing until fall. 200, mainly N. Temp."

  • Provided by: [B].New York Botanical Garden
    • Source: [
    • 9
    • ]. 

    Morphology

    Annual or perennial herbs

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

    Leaves alternate or rosulate, entire or lobed

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

    Ray florets 1–2-seriate, female; disc florets many, hermaphrodite or the outermost female, tubular or funnel-shaped with 5 lobes, style-appendages lanceolate to broadly triangular

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

    Achenes terete or compressed; pappus mostly double, an outer row of scales (sometimes absent), an inner row of fine bristles

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

    Capitula solitary or few together on terminal peduncles, radiate; receptacle flat, epaleate

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

    Herbes'vivaces ou annuelles.'Feuilles'alternes ou parfois groupées en rosette basilaires, entières, dentées à lobées ou pennatifides.'Capitules'petits à moyens, hétérogames, radiés, subsphériques ou campanulés, solitaires ou groupés en corymbes oligocéphales, pédonculés; bractées involucrales étroites, subherbacées; réceptacle plan, nu.'Fleurs'périphériques femelles, 1(-2)-sériées, ligulées, blanches ou mauves, parfois blelues.'Fleurs'centrales hermaphrodites, tubuleuses ou infundibuliformes; corolle jaune, terminée par 5 lobes ± triangulaires. Anthères à base obtuse. Style bifide au sommet, à branches aplaties, linéaires à lancéolées ou triangulaires, aiguës à obtuses au sommet.'Akènes subcylindriques à ± comprimés; pappus sétacé, 1-2-sérié, à soies scabres ou finement barbelées.\n\t\t\t\tType:'non designatus .\n\t\t\t\tGenre subcosmopolite, groupant environ 200 espèces, réparties surtout en Amérique. Dans la flore d'Afrique centrale seulement 1 espèce qui est introduite et déjà ± naturalisée.

  • Provided by: [C].Flore d'Afrique Centrale
    • Source: [
    • 10
    • ]. 

    Distribution

    About 200 species, nearly all in N America and Eurasia.

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

    Included Species

      Bibliography

    • 1 K. Bremer, Asteraceae Clad. & Class.: 420 (1994)
    • 2 A.J. Scott in Fl. Mascar. 109: 105 (1993)
    • 3 Wild in Kirkia 10: 34 (1975)
    • 4 Oliv. & Hiern in F.T.A. 3: 307 (1877)
    • 5 DC., Prodr. 5: 283 (1836)
    • 6 L., Gen. Pl., ed. 5: 371 (1754)
    • 7 Sp. Pl.: 863 (1753)
    • 8 Compositae, H. Beentje, C. Jeffrey & D.J.N. Hind. Flora of Tropical East Africa. 2005
    • 9 "Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp."
    • 10 S. Lisowski (1989) “Flore d'Afrique Centrale (Zaïre - Rwanda - Burundi):Compositae (Deuxième partie : tribu Inuleae)\n”

     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
    Flore d'Afrique Centrale
    https://www.floredafriquecentrale.be
    • C 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
    • D
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • E CC0 1.0 Universal (CC0 1.0).