Bidens amplissima Greene (Q2555)

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

    Statements

    taxon/id/Bidens amplissima Greene
    0 references
    Bidens amplissima Greene
    Bidens amplissima
    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
    grand bident (French)
    Vancouver Island beggarticks (English)
    1 reference
    Klinkenberg, B. (ed.). 2010+. E-Flora BC: Electronic Atlas of the Plants of British Columbia. Lab. for Advanced Spatial Analysis, Department of Geography, University of British Columbia, Vancouver, B.C. http://www.eflora.bc.ca http://www.eflora.bc.ca/
    Flowering Aug–Oct.
    seasonal wetlands
    borders
    streams
    Leaves sessile or petioles 10–50 mm (winged);
    blades lance-elliptic to lance-oblong, 80–120 (–250) × 30–100 mm (proximal usually with 1–2 lobes near bases), bases cuneate, margins laciniate to serrate, ciliate, apices acuminate, faces glabrous.
    Heads in ± corymbiform arrays.
    Peduncles (10–) 30–70+ mm.
    Calyculi of 8–10 usually spreading, lance-linear to lanceolate, sometimes ± foliaceous bractlets or bracts 10–20 (–75) mm, margins entire or incised, ciliate, abaxial faces ± hispid at bases.
    Involucres ± hemispheric or broader, 6–10 × 18–25 mm.
    Phyllaries 13–16+, oblong to lanceovate, 6–10 mm.
    Ray-florets 6–11;
    laminae yellow, 4–8 mm.
    Disc-florets 50–100+;
    corollas yellow, 2.5–3.5 mm.
    Cypselae olivaceous green, ± flattened, unequally 3–4-angled, cuneate, outer 5–6 mm, inner 6–7 mm, margins antrorsely to retrorsely barbed, apices truncate to concave, faces weakly striate, glabrous or sparsely puberulent;
    pappi 0, or of (1–) 3 (–4) suberect, retrorsely barbed awns 2–4 mm.