Helianthus pauciflorus Nutt.
  • Gen. N. Amer. Pl. 2: 177 (1818) 
  • Hélianthe raide


Cite taxon page as 'WFO (2023): Helianthus pauciflorus Nutt. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000073302. Accessed on: 03 Oct 2023'

Local Descriptions

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General Information

Perennials, 50–200 cm (rhizomatous). Stems erect, scabro-hispid. Leaves mostly basal; opposite, or opposite (proximal) and alternate; petioles 0–1 cm; blades lance-ovate to oblong-lanceolate, or rhombic-ovate to lance-linear, 5–27 × 2–6 cm, bases cuneate, margins serrate to subentire, abaxial faces sparsely hispid, sparsely, if at all, gland-dotted (cauline smaller). Heads 1–10. Peduncles 3–12 cm. Involucres hemispheric, 15–23 mm diam. Phyllaries 25–35, ovate, 6–10 × 3–5 mm, (margins ciliate) apices acute, abaxial faces glabrate to hispid. Paleae 9–10 mm, shallowly 3-toothed to subentire (apices ciliate, hairy). Ray florets 10–20; laminae 20–35 mm (abaxial faces usually gland-dotted). Disc florets 75+; corollas 6.5–7 mm, lobes usually reddish, sometimes yellow ; anthers dark, appendages dark (style branches yellow). Cypselae 5–6 mm, glabrate; pappi of 2 aristate scales 4.5–5 mm plus 1–4 smaller aristate scales 0.3–2 mm. 2n = 102 (subspecies unknown).

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

    Perennial with long rhizomes; stems scabrous or hispid to subglabrous, ± naked above, the heads long-pedunculate; lvs nearly all opposite, to 15 pairs below the infl, scabrous to shortly hispid on both sides, mostly (2–)2.5–8 times as long as wide, mostly trinerved, toothed or entire, tapering to a short petiole or petiolar base, the middle ones seldom much smaller than the lowest ones present at anthesis; disk red-purple, 1.5–2.5(–3) cm wide; invol bracts evidently imbricate, broad, firm, appressed, mostly ovate or broadly lanceolate, sharply acute to obtuse, conspicuously ciliolate, otherwise generally glabrous; rays 10–21, 1.5–3(–3.5) cm; pappus nearly always with some short scales in addition to the 2 longer awns; 2n=102. Prairies and roadsides; Mich. and Ind. to Alta., N.M., and Tex., and e. occasionally to Mass. and N.B. Aug., Sept.

  • Provided by: [C].Manual of Vascular Plants of Northeastern US and Canada
    • Source: [
    • 3
    • ]. 

    Morphology

    1–2 m hoch, oben verzweigt. Blätter gegenständig, untere früh abfallend, lanzettlich, 10–15 cm lang, rauhaarig, gezähnt, mit kurzem, geflügeltem Stiel, oberste wechselständig und viel kleiner. Durchmesser der Blütenköpfe 7–10 cm. Zungenbl

  • Provided by: [B].Flora Helvetica – Illustrierte Flora der Schweiz
    • Source: [
    • 2
    • ]. 

    Ecology

    8–9. Ufer, Gräben, aus Gärten verwildert, kollin. In Ausbreitung begriffen.

  • Provided by: [B].Flora Helvetica – Illustrierte Flora der Schweiz
    • Source: [
    • 2
    • ]. 
    Flora Helvetica – Illustrierte Flora der SchweizMorphology

    1–2 m hoch, oben verzweigt. Blätter gegenständig, untere früh abfallend, lanzettlich, 10–15 cm lang, rauhaarig, gezähnt, mit kurzem, geflügeltem Stiel, oberste wechselständig und viel kleiner. Durchmesser der Blütenköpfe 7–10 cm. Zungenbl

    Ecology

    8–9. Ufer, Gräben, aus Gärten verwildert, kollin. In Ausbreitung begriffen.

    Manual of Vascular Plants of Northeastern US and CanadaGeneral Information

    Perennial with long rhizomes; stems scabrous or hispid to subglabrous, ± naked above, the heads long-pedunculate; lvs nearly all opposite, to 15 pairs below the infl, scabrous to shortly hispid on both sides, mostly (2–)2.5–8 times as long as wide, mostly trinerved, toothed or entire, tapering to a short petiole or petiolar base, the middle ones seldom much smaller than the lowest ones present at anthesis; disk red-purple, 1.5–2.5(–3) cm wide; invol bracts evidently imbricate, broad, firm, appressed, mostly ovate or broadly lanceolate, sharply acute to obtuse, conspicuously ciliolate, otherwise generally glabrous; rays 10–21, 1.5–3(–3.5) cm; pappus nearly always with some short scales in addition to the 2 longer awns; 2n=102. Prairies and roadsides; Mich. and Ind. to Alta., N.M., and Tex., and e. occasionally to Mass. and N.B. Aug., Sept.

    Flora of North America @ efloras.orgGeneral Information

    Perennials, 50–200 cm (rhizomatous). Stems erect, scabro-hispid. Leaves mostly basal; opposite, or opposite (proximal) and alternate; petioles 0–1 cm; blades lance-ovate to oblong-lanceolate, or rhombic-ovate to lance-linear, 5–27 × 2–6 cm, bases cuneate, margins serrate to subentire, abaxial faces sparsely hispid, sparsely, if at all, gland-dotted (cauline smaller). Heads 1–10. Peduncles 3–12 cm. Involucres hemispheric, 15–23 mm diam. Phyllaries 25–35, ovate, 6–10 × 3–5 mm, (margins ciliate) apices acute, abaxial faces glabrate to hispid. Paleae 9–10 mm, shallowly 3-toothed to subentire (apices ciliate, hairy). Ray florets 10–20; laminae 20–35 mm (abaxial faces usually gland-dotted). Disc florets 75+; corollas 6.5–7 mm, lobes usually reddish, sometimes yellow ; anthers dark, appendages dark (style branches yellow). Cypselae 5–6 mm, glabrate; pappi of 2 aristate scales 4.5–5 mm plus 1–4 smaller aristate scales 0.3–2 mm. 2n = 102 (subspecies unknown).

    Other Local Names

    NameLanguageCountry
    Hélianthe raideFrenchCH
    Steife SonnenblumeGermanCH
    Flur-sulegl selvadiaRaeto-RomanceCH
    Girasole selvaticoItalianCH

      Bibliography

     Information From

    Asteraceae
    https://about.worldfloraonline.org/tens/the-international-compositae-alliance
    World Flora Online Data. 2022.
    • A CC0 1.0 Universal (CC0 1.0).
    Flora Helvetica – Illustrierte Flora der Schweiz
    http://www.flora-helvetica.ch
    Flora Helvetica – Illustrierte Flora der Schweiz, Konrad Lauber, Gerhart Wagner, Andreas Gygax. Haupt Verlag 2018.
    • B All Rights Reserved
    Manual of Vascular Plants of Northeastern US and Canada
    https://www.nybg.org/
    Descriptions of plants should be attributed to the full citation for each individual article, chapter or book that is the source for each record, which should include the authors of original publication.
    • C 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.
    • D Flora of North America Association
    Vahliaceae
    http://www.worldfloraonline.org/organisation/Vahliaceae
    World Flora Online Data. 2021.
    • E CC0 1.0 Universal (CC0 1.0).
    International Union for Conservation of Nature and Natural Resources
    https://www.iucnredlist.org/
    IUCN 2022. The IUCN Red List of Threatened Species. Version 2021-3. ISSN 2307-8235
    • F See IUCN Terms and conditions of use http://www.iucnredlist.org/info/terms-of-use