Bidens bipinnata Linnaeus (Q2558)

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Bidens bipinnata is a taxon with the rank species within the genus Bidens
Language Label Description Also known as
English
Bidens bipinnata Linnaeus
Bidens bipinnata is a taxon with the rank species within the genus Bidens

    Statements

    taxon/id/Bidens bipinnata Linnaeus
    0 references
    Bidens bipinnata Linnaeus
    Bidens bipinnata
    Linnaeus
    FNA Editorial Committee. 2006. Flora of North America north of Mexico. Volume 21: Magnoliophyta: Asteridae, part 8: Asteraceae, part 3. Oxford University Press, New York.
    accepted
    bident à feuilles bipennées (French)
    bident bipenné (French)
    bident deux fois penné (French)
    Spanish needles (English)
    1 reference
    Canadian Museum of Nature (CAN), Gatineau, QC. Specimen.
    1 reference
    FNA Editorial Committee. 2006. Flora of North America north of Mexico. Volume 21: Magnoliophyta: Asteridae, part 8: Asteraceae, part 3. Oxford University Press, New York. http://www.efloras.org/volume_page.aspx?volume_id=1021&flora_id=1
    South America
    Europe
    Pacific Islands
    Flowering (Jun–)Aug–Sep(–Oct).
    fields
    forests
    disturbed
    wettish sites
    Leaves: petioles 20–50 mm;
    blades rounded-deltate to ovate or lanceolate overall, (20–) 30–70+ × (20–) 30–60+ mm, (1–) 2 (–3) -pinnatisect, ultimate lobes obovate or lanceolate, 15–45+ × 10–25+ mm, bases truncate to cuneate, ultimate margins entire, sometimes ciliolate, apices rounded to acute or attenuate, faces usually glabrous, sometimes hirtellous.
    Heads usually borne singly, sometimes in ± corymbiform arrays.
    Peduncles (10–) 20–50 (–100) mm.
    Calyculi of (7–) 8 (–10) linear bractlets 3–5 mm, ± appressed, margins ciliate, abaxial faces usually glabrous.
    Involucres ± campanulate, 5–7 × 3–4 (–5) mm.
    Phyllaries 8–12, lanceolate to linear, 4–6 mm.
    Ray-florets 0 or 3–5+;
    laminae yellowish or whitish, 1–2 (–3) mm.
    Disc-florets 10–20 (–30+);
    corollas yellowish to whitish, 2–3 mm.
    Cypselae redbrown, outer weakly obcompressed, 7–15 mm, inner ± 4-angled, linear to linear-fusiform, 12–18 mm, margins not ciliate, apices ± attenuate, faces 2-grooved, often tuberculate-hispidulous;
    pappi of (2–) 3–4, erect to divergent, retrorsely barbed awns 2–4 mm. 2n = 24, 72.