Bidens tripartita L.
  • Sp. Pl.: 831 (1753)
  • Scothóg leathan


Cite taxon page as 'WFO (2021): Bidens tripartita L. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000068428. Accessed on: 18 Sep 2021'

General Information

Annuals, 10-150 cm tall. Leaves sessile or petiolate; petiole (0-)5-15(-35) mm (± winged); blade elliptic to ovate or lanceolate, 40-80(-150) × 15-40(-60) mm, sometimes laciniately 1-pinnatisect with 1-4+ lobes near base, both surfaces glabrous or hirtellous, base cuneate, margin entire or dentate to serrate, usually ciliate, apex acute to acuminate. Capitula radiate or discoid, solitary or in 2s or 3s; peduncles 10-40(-80) mm; calycular bracts (2-)6 or 7(-10), spreading, oblanceolate or lanceolate to linear, ± leaflike, 7-35(-60) mm, abaxially hispidulous near bases, distally glabrous, margins entire or serrate, sometimes sparsely ciliate; involucres campanulate to hemispheric or broader, (4-)5-7(-12) × (3-)6-12(-15) mm; phyllaries (6 or)7 or 8(-13), elliptic-ovate to ovate-lanceolate, (4-)6-9(-12) mm. Ray florets usually 0, sometimes 1-5; lamina orange yellowish, 4-8 mm. Disk florets (5-)20-60(-150); corollas pale yellow to orange, (2-)3-4 mm, apex 4- or 5-toothed. Achenes blackish to purplish or brown, ± flattened, sometimes weakly 3(or 4)-angled, usually cuneate to linear, outer (3-)6-7(-10) mm, inner (4-)6-9(-11) mm, faces ± 1-veined, usually smooth, seldom notably tuberculate, glabrous or sparsely strigillose, margin proximally antrorsely to patently, distally retrorsely, barbed, apices ± truncate to concave; pappus 0, or of 1-3(or 4) erect to spreading, retrorsely barbed awns (0.2-)2-3(-6) mm. Fl. Jul-Oct. 2n = 48.

  • Provided by: [C].Flora Of CHina @ efloras.org
    • Source: [
    • 1
    • ]. 

    Annuals, (5–)20–70(–200) cm. Leaves sessile or petioles 5–15(–35+) mm (± winged); blades ± elliptic to ovate or lanceolate, 40–80(–150+) × 15–40(–60+) mm, sometimes laciniately 1-pinnatisect with 1–4+ lobes near bases, bases cuneate, margins entire or dentate to serrate, usually ciliate, apices acute to acuminate, faces glabrous or hirtellous. Heads borne singly or in 2s or 3s. Peduncles 10–40(–80) mm. Calyculi of (2–)6–7(–10) ± spreading, oblanceolate or lanceolate to linear, ± foliaceous bractlets or bracts 7–35(–60) mm, margins (entire or serrate) sometimes sparsely ciliate, abaxial faces hispidulous near bases, distally glabrous. Involucres campanulate to hemispheric or broader, (4–)5–7(–12) × (3–)6–12(–15+) mm. Phyllaries (6–)7–8(–13), elliptic-ovate to lance-ovate, (4–)6–9(–12) mm. Ray florets usually 0, sometimes 1–5; laminae orange yellowish, 4–8 mm. Disc florets (5–)20–60(–150+); corollas pale yellow to orange, (2–)3–4 mm (gradually ampliate, anthers usually pale). Cypselae blackish to purplish or brown, ± flattened, sometimes weakly 3(–4)-angled, usually cuneate to linear, outer (3–)6–7(–10) mm, inner (4–)6–9(–11) mm, margins proximally antrorsely to patently, distally retrorsely, barbed, apices ± truncate to concave, faces ± 1-nerved, usually smooth, seldom notably tuberculate, glabrous or sparsely strigillose; pappi 0, or of (1–)3–3(–4+) ± erect to spreading, retrorsely barbed awns (0.2–)2–3(–6) mm. 2n = 48.

  • Provided by: [B].Flora of North America @ efloras.org
    • Source: [
    • 2
    • ]. 

    Distribution Map

     
    • Native distribution
    Found in
    • Europe Northern Europe Ireland

    Nationally Preferred Names

    NameLanguageCountry
    Scothóg leathanIrishIE
    Trifid bur-marigoldEnglishIE

    Other Local Names

    NameLanguageCountry
    Cnáib uisceIrishIE

     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).
    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.
    • B Flora of North America Association
    Flora Of CHina @ efloras.org
    http://www.efloras.org/flora_page.aspx?flora_id=2
    'Flora of China @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=2 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • C Missouri Botanical Garden
    Irish Vernacular Names
    https://www.missouribotanicalgarden.org/plant-science/plant-science/research-staff/article/380/wyse-jackson-peter-s.aspx
    • D All Rights Reserved
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • E CC0 1.0 Universal (CC0 1.0).