Ambrosia linearis (Rydb.) W.W.Payne
  • J. Arnold Arbor. 45


Cite taxon page as 'WFO (2021): Ambrosia linearis (Rydb.) W.W.Payne. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000035491. Accessed on: 27 Oct 2021'

General Information

Perennials or subshrubs, 20–40+ cm. Stems erect. Leaves mostly alternate; petioles 0; blades mostly linear (some 1-pinnate, lobes lin­ear), 12–20(–35+) × 1(–2+) mm, bases cuneate, margins entire, abaxial faces strigillose (whitish), adaxial faces scabrellous. Pistillate heads clustered, proximal to staminates; florets 1. Staminate heads: peduncles 0.5–1 mm; involucres cup-shaped (with black nerves), 4–6+ mm diam., strigillose; florets 12–20+. Burs: bodies pyriform to obconic, 2–4(–5) mm, strigillose, spines (4–)5–9(–13+), scattered or mostly distal, subulate, (0.8–)1–1.5 mm, tips usually uncinate.

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

     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
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • C CC0 1.0 Universal (CC0 1.0).