Solidago speciosa Nuttall (Q2299)

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Solidago speciosa is a taxon with the rank species within the series Solidago ser. Erectae
Language Label Description Also known as
English
Solidago speciosa Nuttall
Solidago speciosa is a taxon with the rank species within the series Solidago ser. Erectae

    Statements

    taxon/id/Solidago speciosa Nuttall
    0 references
    Solidago speciosa Nuttall
    Solidago speciosa
    Nuttall
    FNA Editorial Committee. 2006. Flora of North America north of Mexico. Volume 20: Magnoliophyta: Asteridae, part 7: Asteraceae, part 2. Oxford University Press, New York.
    accepted
    showy goldenrod (English)
    noble goldenrod (English)
    verge d'or voyante (French)
    Showy or noble goldenrod (English)
    1 reference
    Semple, J.C. 2013. Classification and illustrations of goldenrods. https://uwaterloo.ca/astereae-lab/research/goldenrods/classification-and-illustrations https://uwaterloo.ca/astereae-lab/research/goldenrods/classification-and-illustrations
    Plants (30–) 50–200 cm;
    caudices stout, woody.
    Stems 1 (–5), erect, glabrous proximally to strigillose in arrays.
    Leaves: basal and proximal cauline (sometimes withering by flowering) tapering to winged petioles, blades lanceolate to ovate-elliptic, 50–300 (including petiole) × 12–80 mm (sometimes firm), margins sharply serrate to crenate or entire, faces glabrate to sparsely strigillose;
    mid to distal cauline sessile, blades narrowly ovate to lanceolate or elliptic, 25–90 × 5–30 mm, gradually reduced distally, margins serrulate to entire (distally), ciliate, faces glabrous or sparsely scabroso-strigose.
    Heads 15–300+, not secund, in usually dense, sometimes open, elongate, paniculiform to thyrsiform arrays, (5–) 10–45 × (2–) 3–7 (–12) cm;
    branches strongly ascending, often racemiform.
    Peduncles 1.5–3 mm, sparsely to moderately scabroso-strigillose;
    bracteoles linear, grading into phyllaries, scattered along peduncles, clustered near heads.
    Involucres narrowly campanulate, 4–6.5 mm.
    Phyllaries in 3–4 series, appressed, strongly unequal, outer ovate, mid and inner lanceolate, (midnerves often raised and thick) apices acute to obtuse or rounded, glabrous.
    Ray-florets (2–) 3–7 (–9);
    laminae 3–4 × 0.5–1 mm.
    Disc-florets 6–16;
    corollas 2.5–4 mm, lobes 0.5–1.2 mm.
    Cypselae (narrowly obconic) 1.6–2.5 mm, glabrous;
    pappi 3–4.5 mm.