Equisetum pratense Ehrh.
  • Hannover. Mag.
  • Meadow horsetail, prêle des prés

Cite taxon page as 'WFO (2020): Equisetum pratense Ehrh. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0001108922. Accessed on: 21 Oct 2020'

General Information

Plants medium-sized. Rhizome erect or creeping, blackish brown, nodes and roots with sparse long yellowish brown trichomes or glabrous. Aerial stem annual, dimorphic, fertile and sterile stems appearing simultaneously. Fertile stems straw-colored, 15-25 cm tall, 2-2.5 mm in diam. at middle, branched eventually, 10-14-ridged; ridges glabrous; sheath tubes grayish green, ca. 0.6 cm; internodes 2-3 cm; sheath teeth 10-14, light brown, lanceolate, 4-6 mm, membranous, with shallow grooves abaxially. Fertile stems remaining alive after spores shed. Sterile stems straw-colored or grayish green, 30-60 cm, 2-2.5 mm in diam. at middle, well branched in whorls, unbranched below middle, main stem 14-22-ridged; ridges arc-shaped abaxially, each ridge often with a row of tubercles; internodes 2.2-2.8 cm; sheath tubes long, narrow, ca. 3 mm, lower portion grayish green, upper portion grayish green but with a light brown band; sheath abaxially 2-ridged; sheath teeth 14-22, light brown but with a blackish brown line, lanceolate, membranous, persistent. Lateral branches slender, complanate, with 3 or 4 narrow and tall ridges; ridges glabrous abaxially; sheath teeth not open. Strobilus ellipsoid-terete, 1-2.2 cm, 3-7 mm in diam., apex blunt; stalk prolonged when mature and 1.7-4.5 cm. 2n = 216.

  • Provided by: [D].Flora Of CHina @ efloras.org
    • Source: [
    • 1
    • ]. 

    Aerial stems dimorphic; vegetative stems green, branched, 16--50 cm; hollow center 1/6--1/3 stem diam. Sheaths somewhat elongate, 3--5 × 2--4 mm; teeth 8--18, narrow, 1.5--4 mm, centers dark and margins white. Branches in regular whorls, horizontal to drooping, solid; ridges 3; valleys channeled; 1st internode of each branch equal to or longer than subtending stem sheath; sheath teeth deltate. Fertile stems brown, with stomates, initially unbranched, persisting and becoming branched and green after spore discharge.

  • Provided by: [C].Flora of North America @ efloras.org
    • Source: [
    • 2
    • ]. 

    "Stems annual, dimorphic, the sterile ones 2–5 dm, 1–3 mm thick, smoothish toward the base, otherwise beset with high, blunt, siliceous tubercles or very short, high, transverse ridge-crests on the (6–)10–18 ridges, with rather small vallecular cavities and a fairly large central cavity commonly 1/3–1/2 the diameter of the stem, the stomates in 2 broad bands in each furrow; sheaths 2–6 cm, green, the teeth 1–2 mm, persistent, only basally connate, with pale, hyaline margins and a firmer dark midstripe; branches regularly whorled at the middle and upper nodes, solid, mostly 3-angled, simple, the first internode to as long as the associated stem-sheath; fertile stems with simple branches, otherwise as in E. sylvaticum. Streambanks and moist woods; circumboreal, s. in our range to N.J. and ne. Io."

  • Provided by: [B].New York Botanical Garden
    • Source: [
    • 3
    • ]. 

    Other Local Names

    Meadow horsetail, prêle des prés

     Information From

    World Flora Online Data. 2017.
    • A CC0 1.0 Universal (CC0 1.0).
    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.
    • B Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
    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.
    • C Flora of North America Association
    Flora Of CHina @ efloras.org
    'Flora of China @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=2 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • D Missouri Botanical Garden
    World Flora Online consortium
    World Flora Online Data. 2018.
    • E CC0 1.0 Universal (CC0 1.0).