Solidago houghtonii Torr. & A.Gray
  • Manual (Gray)


Cite taxon page as 'WFO (2020): Solidago houghtonii Torr. & A.Gray. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000108455. Accessed on: 26 Oct 2020'

General Information

Plants 30–60+ cm; caudices branching; vascular bundles and petiole bases marcescent (attached to old stems for more than a season). Stems 1–5+, erect, slender, glabrous. Leaves: basal tapering to long, winged petioles, blades ovate, to 7–22 mm wide, margins entire, apices acute, faces glabrous; proximal cauline tapering to winged petiole-like bases partially clasping stems, blades sometimes 3-nerved (2 prominent lateral nerves arising proximally and running alongside midnerve for some distance before diverging), linear oblanceolate , 158–177 × 7–22 mm, margins entire, ciliate, apices acute to obtuse, glabrous; mid to distal sessile, blades linear lanceolate , mid often 3-nerved (obscurely sometimes), distal 1-nerved, 47–100 × 4–10 mm, reduced distally. Heads (2–)5–50(–100+), not secund, in corymbiform arrays, branches and peduncles glabrous or moderately strigillose. Peduncles 5–6.2 mm, sparsely to moderately strigillose; bracteoles 0–2, linear. Involucres campanulate, (5.5–)6–8(–9) mm. Phyllaries in 3–4 series, unequal, linear to oblanceolate, margins ciliate, weakly striate, obtuse to rounded. Ray florets 6–12 (pale to bright yellow); laminae 7.4–7.9 × 0.5–0.6 mm. Disc florets 8–15; corollas 4–4.3 mm, lobes 0.9–1.5 mm. Cypselae obconic, 1.4–1.8 mm, glabrous, ribs sometimes dark; pappi of bristles 4–5.5 mm, clavate. 2n = 54.

  • Provided by: [C].Flora of North America @ efloras.org
    • Source: [
    • 1
    • ]. 

    "Slender perennial from a caudex, 2–5 dm, rough-puberulent in the infl, otherwise glabrous except for the scabro-ciliolate lf-margins; lvs basally disposed, tending to be weakly triple-nerved and often conduplicate, the larger ones linear-oblanceolate to linear, to 20 × 2 cm, the cauline few, 7–15 below the infl; infl corymbiform, its heads crowded, relatively few, mostly less than 50; invol 5.5–8 mm, its bracts firm, blunt, scarcely striate; rays ca 6 and disk-fls ca 13; achenes glabrous, 3–5-angled, the angles weakly nerved; many of the pappus-bristles slightly clavate and subplumose; 2n=54. Swamps and moist beaches, often in moist sandy swales behind the dunes; Genesee Co., N.Y., and along the shores of the n. parts of Lake Michigan and Huron, rarely inland in ne. Mich."

  • Provided by: [B].New York Botanical Garden
    • Source: [
    • 2
    • ]. 

      Bibliography

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    • A CC0 1.0 Universal (CC0 1.0).
    New York Botanical Garden
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    • B Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
    Flora of North America @ efloras.org
    http://www.efloras.org/flora_page.aspx?flora_id=1
    'Flora of North America @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=1 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • C Flora of North America Association
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • D CC0 1.0 Universal (CC0 1.0).
    International Union for Conservation of Nature v.3
    https://www.iucnredlist.org/
    IUCN 2019. The IUCN Red List of Threatened Species. Version 2019-1.
    • E See IUCN Terms and conditions of use http://www.iucnredlist.org/info/terms-of-use
    International Union for Conservation of Nature
    https://www.iucn.org/
    IUCN 2016. IUCN Red List of Threatened Species. Version 2016-2
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