Bidens polylepis S. F. Blake (Q2567)

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Bidens polylepis is a taxon with the rank species within the genus Bidens
Language Label Description Also known as
English
Bidens polylepis S. F. Blake
Bidens polylepis is a taxon with the rank species within the genus Bidens

    Statements

    taxon/id/Bidens polylepis S.F. Blake
    0 references
    Bidens polylepis S.F. Blake
    Bidens polylepis
    S.F. Blake
    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 écailles nombreuses (French)
    awnless beggarticks (English)
    long-bracted beggarticks (English)
    Ozark tickseed-sunflower (English)
    long-bracted tickseed-sunflower (English)
    1 reference
    Newmaster, S.G. & S. Ragupathy. 2005. Flora Ontario - Integrated Botanical Information System (FOIBIS), Phase I. University of Guelph, Canada. http://www.uoguelph.ca/foibis http://www.uoguelph.ca/foibis/
    Flowering Aug–Oct.
    marshes
    flood plains
    disturbed sites
    Leaves: petioles 5–30 mm;
    blades ± deltate to ovate overall, 40–80 (–150+) × 25–50 (–80+) mm, usually laciniately 1-pinnatisect, ultimate lobes 3 (–7), lanceolate to linear, 25–60 (–120+) × (3–) 6–20 (–25) mm, bases cuneate, ultimate margins incised, dentate, or serrate, ciliate, apices acute to attenuate, faces glabrous or hirtellous to scabrellous.
    Heads borne singly or in 2s or 3s or in open, ± corymbiform arrays.
    Peduncles 10–20 (–50) mm.
    Calyculi of 12–21+ spreading to reflexed, linear, seldom foliaceous bractlets (6–) 8–12 (–20+) mm, margins coarsely ciliate, abaxial faces glabrous or scabrellous.
    Involucres turbinate to hemispheric, 4–5 × 6–10 mm.
    Phyllaries 6–8+, lanceovate to lanceolate, 4–7 mm.
    laminae golden yellow, 10–25+ mm.
    Disc-florets (40–) 60–100+;
    corollas yellow, 2.5–3 mm.
    Cypselae blackish or brown to yellowish, ± flattened, obovate or oblanceolate to cuneate, outer 5–7 mm, inner 7–8 mm (lengths mostly 1.5–2.5 widths), margins (± corky-winged) antrorsely barbed or ciliate, apices ± truncate, faces glabrous or strigillose, sometimes tuberculate;
    pappi 0, or of 2 divergent, retrorsely barbed awns or ± deltate scales 0.1–0.5 (–1.5) mm.