Solidago gigantea Aiton (Q2392)

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Solidago gigantea is a taxon with the rank species within the subsection Solidago subsect. Serotinae
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English
Solidago gigantea Aiton
Solidago gigantea is a taxon with the rank species within the subsection Solidago subsect. Serotinae

    Statements

    taxon/id/Solidago gigantea Aiton
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    Solidago gigantea Aiton
    Solidago gigantea
    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
    giant goldenrod (English)
    verge d'or géante (French)
    Tall or giant or smooth goldenrod (English)
    verge d’or géante (English)
    Flowering Aug–Sep(–Oct).
    least moister soils
    ditches
    depressions
    open woods
    thickets
    moist depressions
    grasslands
    parklands
    0–1500+ m
    in Mexico
    Plants 50–200 cm (solitary or clustered);
    rhizomes short to long-creeping.
    Stems 1–20+ or clustered, erect, glabrous or sparsely strigose in arrays, sometimes glaucous.
    proximal cauline usually withering by flowering time, sessile, lanceolate, 91–97 × 10–14 mm, margins sharply serrate, 3-nerved, apices acuminate, abaxial faces pilose on nerves or glabrous;
    mid to distal cauline similar, 57–76 × 0.7–1.2 cm, largest toward mid-stem, decreasing distally.
    Heads 40–600, secund, in broadly secund, pyramidal paniculiform arrays, rarely rhombic or club-shaped, proximal branches divergent, recurved, glabrous-glabrate or strigose, sometimes glaucous.
    Peduncles 1.5–3 mm, sparsely to densely strigillose;
    bracteoles 0–2, linear-lanceolate.
    Involucres campanulate, (2–) 2.5–4 (–5) mm.
    Ray-florets (7–) 9–15 (–24) (conspicuous);
    laminae 1–3 × (0.1–) 0.2–0.4 mm.
    Disc-florets (4–) 7–12 (–17);
    corollas (2.5–) 3–3.5 (–4.5) mm, lobes 0.6–1 (–1.4) mm.
    Cypselae 1.3–1.5 mm, sparsely strigose;
    pappi 2–2.5 mm. 2n =18, 36, 54.