Heliopsis helianthoides (L.) Sweet


Cite taxon page as 'WFO (2019): Heliopsis helianthoides (L.) Sweet. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000010572. Accessed on: 10 Dec 2019'

General Information

Perennials, (40–)80–150 cm. Aerial stems (from creeping rhizomes to 4 cm × 2–6 mm, rhizome internodes mostly 2–10 mm) 1–10+, stramineous to reddish brown, glabrous or hairy. Leaf blades ovate to deltate-lanceolate, 6–12(–15) × 2–6(–12) cm, margins regularly to irregularly and coarsely dentate, apices acute to acuminate, faces glabrous, sparsely pubescent, moderately to densely scabrellous, or scabrous. Heads 1–15+. Peduncles 9–25 cm. Involucres 12–25 mm diam. Phyllaries glabrescent to densely pubescent on margins, apices, and abaxial faces. Paleae lanceolate to oblong, apices obtuse, faces glabrous. Ray florets 10–18; corollas golden yellow, laminae mostly 2–4 cm × 6–13 mm. Disc florets 10–75+; corollas yellowish to brownish yellow (lobes brighter than tubes), 4–5 mm, glabrous. Cypselae 4–5 mm, glabrous or pubescent on angles, smooth; pappi 0 or of 2–4 minute, toothlike scales. 2n = 28 (variety unknown).

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

    "Robust, fibrous-rooted perennial 5–15 dm; lvs ovate or lance- ovate, often subtruncate at base, serrate, 5–15 × 2.5–8 cm, on petioles 5–35 mm; heads naked-pedunculate, the disk 1–2.5 cm wide; rays 8–16, rather pale yellow, 1.5–4 cm; achenes essentially glabrous; 2n=28. Rich to dry woods, prairies, and waste places; Que. to B.C., s. to Ga. and N.M. July–Oct. Var. helianthoides, with glabrous, often glaucous stem and rather thin lvs smooth on both sides or merely slightly scabrous above, occurs from N.Y. to Mich. and Ill., and s. to Ga. and Miss. Var. scabra (Dunal) Fernald, with firmer lvs scabrous on both sides, the stem often scabrous as well, occurs in the Great Plains and prairie region, and e. across the n. part of our range to the Atlantic. (H. scabra)"

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

      Bibliography

     Information From

    Compositae
    CC0 1.0 Universal (CC0 1.0). https://creativecommons.org/publicdomain/zero/1.0
    • A CC0 1.0 Universal (CC0 1.0).
    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.
    • B Flora of North America Association
    New York Botanical Garden
    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
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • D CC0 1.0 Universal (CC0 1.0).