Equisetum laevigatum A. Braun
  • Amer. J. Sci. Arts
  • Smooth scouring rush

Cite taxon page as 'WFO (2021): Equisetum laevigatum A. Braun. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0001108918. Accessed on: 22 Oct 2021'

General Information

Aerial stems lasting less than a year, occasionally overwintering in the southwestern United States, usually unbranched, 20--150 cm; lines of stomates single; ridges 10--32. Sheaths green, elongate, 7--15 × 3--9 mm; teeth 10--32, articulate and usually shed early, leaving dark rim on sheath. Cone apex rounded to apiculate with blunt tip; spores green, spheric. 2 n =216.

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

    "Stems all alike, annual (reputedly sometimes perennial toward the southwest), mostly unbranched, 3–10 dm, 3–8 mm thick, with mostly (10–)16–32 ridges, these smooth or commonly with inconspicuous, low, transverse wrinkle-ridges; central cavity mostly 2/3–3/4 the diameter of the stem, much larger than the small vallecular ones; stomates in 2 lines in each furrow; sheaths mostly 7–15 mm, mainly green, black-banded at the apex only, or the lowest ones sometimes black also at the base or throughout, the dark, scarious-margined teeth promptly and regularly deciduous; cones short-pedunculate, 1–2.5 cm, blunt or often inconspicuously short-apiculate. Open wet places; s. B.C. to Baja Calif., e. to s. Ont., w. N.Y., O., w. Va., Ill., Okla., and Tex. (E. kansanum)"

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

    Other Local Names

    Smooth scouring rush


     Information From

    World Flora Online Data. 2017.
    • A CC0 1.0 Universal (CC0 1.0).
    Flora of North America @ efloras.org
    '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
    World Flora Online Data. 2018.
    • D CC0 1.0 Universal (CC0 1.0).