Equisetum fluviatile L.
  • Sp. Pl.
  • Water horsetail

Cite taxon page as 'WFO (2021): Equisetum fluviatile L. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0001108916. Accessed on: 22 Oct 2021'

General Information

Plants large. Rhizome creeping or erect, castaneous, hollow in center, nodes with long castaneous adventitious roots; adventitious roots often with long yellowish trichomes. Aerial stem perennial, monomorphic, hollow in center, 40-60(-70) cm tall, 3-6 mm in diam. at middle, lower portion of main stem with 1-3 reddish brown internodes, lustrous, upper portion of main stem straw-colored or grayish green, without whorled branches or with shorter, more slender whorled branches in comparison with main stem; internodes 3-5 cm. Main stem 14-20-ridged; ridges arc-shaped abaxially and glabrous and with small light-colored cross grains; sheath tubes light brown, long, narrow, 1-1.2 cm; sheath teeth 14-20, blackish brown, lanceolate, thinly leathery, flat abaxially, without grooves, persistent. Lateral branches absent or present, if present then slender, 5-15 cm, 0.6-1 cm in diam., straw-colored or grayish green, 5-7-ridged; ridges arc-shaped abaxially and glabrous or with small cross grains; sheath teeth 4-6, straw-colored or light brown, thinly leathery, persistent. Strobilus shortly clavate or ellipsoid, 1.2-2.5 cm, 0.6-1.2 cm in diam., apex blunt; stalk prolonged when mature and 1.2-2 cm. 2n = 216.

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

    Aerial stems monomorphic, green, unbranched or branched, 35--115 cm; hollow center large, to 9/10 stem diam.; vallecular canals absent. Sheaths squarish in face view, ca. 4--10 × 4--10 mm; teeth black, occasionally with narrow white border, 12--24, narrow, 2--3 mm. Branches when present only from midstem nodes, spreading, hollow, ridges 4--6, valleys rounded; 1st internode of each branch shorter than subtending stem sheath; sheath teeth narrow. 2 n =216.

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

    "Stems annual, all alike, to 1 m or more, shallowly 9–25-ridged, the ridges smooth or nearly so, the stomates in a single broad band in each furrow; central cavity commonly more than ¾ the diameter of the stem, the vallecular cavities commonly lacking except near the base; sheaths green, 4–9 mm, with persistent, narrow, sharp, black or blackish teeth 1.5–3+ mm, these not or scarcely hyaline- margined; branches none to often numerous and whorled at the middle and upper nodes, 4–6-angled, simple, thefirst internode slightly shorter than the associated stem-sheath; cone pedunculate, 1–2 cm, deciduous. In shallow water, along muddy shores, and in marshes and bogs; circumboreal, in Amer. s. to Pa., Ill., Io., Nebr., and Wash."

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


    50-150 cm boyunda çokyıllık otsu bitkiler. Rizomlar dik veya yükselici, siyah veya koyu kahverengi, tüysüz. Ana gövde çokyıllık, tek biçimli, düğümlerde dallanmış (yan gövde) veya dallanmamış, 0,4-1,2 cm çapında, soluk yeşil, 10-30 oluklu; kın yeşil, 0,5-0,8 cm uzunluğunda, dişler gövdedeki oluk sayısı kadar, mızraksı, sivri, omurgasız, siyah veya kahverengi, kalıcı. Eğer varsa, yan gövdeler dallanmamış; koyu yeşil, 2-10 cm uzunluğunda, 3-4 oluklu. Ana gövdedeki öz boşluğu gövdenin 4/5’i kadar. Kozalak kahverengi, yeşil gövdenin ucunda tek, tersyumurtamsı veya eliptik, 1-2,5 × 0,5-0,8 cm.

  • Provided by: [F].Resimli Türkiye Florası (the Illustrated Flora of Turkey)
    • Fertile und sterile Stängel gleich, 30–120 cm hoch, grün, 5–8 mm dick, glatt und gerieft, einfach oder oben ästig. Zentralhöhle 75–90% des Stängeldurchmessers. Scheiden eng anliegend, 10–25zähnig. Zähne schwarz, oft mit weisslicher Sp

    • Provided by: [C].Flora Helvetica – Illustrierte Flora der Schweiz
      • Source: [
      • 4
      • ]. 


      5–7. Verlandungspionier in Seen, Teichen, Gräben, kollin-subalpin. CH.

    • Provided by: [C].Flora Helvetica – Illustrierte Flora der Schweiz
      • Source: [
      • 4
      • ]. 

      Distribution Map

      • Native distribution
      Found in
      • Europe Northern Europe Ireland

      Nationally Preferred Names

      Water horsetailEnglishIE
      Scuab eich uisceIrishIE

      Other Local Names

      Water pipesEnglishIE
      Equiseto fluviatileItalianCH
      Prêle limicoleFrenchCH
      Spurella da glittaRaeto-RomanceCH
      River horsetail, pipes, prêle fluviatile


       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
      Flora Helvetica – Illustrierte Flora der Schweiz
      Flora Helvetica – Illustrierte Flora der Schweiz, Konrad Lauber, Gerhart Wagner, Andreas Gygax. Haupt Verlag 2018.
      • C All Rights Reserved
      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
      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.
      • E Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
      Resimli Türkiye Florası (the Illustrated Flora of Turkey)
      Güner, A., Kandemir, A., Menemen, Y., Yıldırım, H., Aslan, S., Ekşi, G., Güner, I. ve Çimen, A.Ö. (edlr.) (2018). Resimli Türkiye Florası, Cilt 2. ANG Vakfı Nezahat Gökyiğit Botanik Bahçesi Yayınları. İstanbul.
      • F All Rights Reserved
      • G Resimli Türkiye Florası (the Illustrated Flora of Turkey).
      Irish Vernacular Names
      • H All Rights Reserved
      World Flora Online consortium
      World Flora Online Data. 2018.
      • I CC0 1.0 Universal (CC0 1.0).
      International Union for Conservation of Nature
      IUCN 2016. IUCN Red List of Threatened Species. Version 2016-2
      • J All Rights Reserved
      International Union for Conservation of Nature v.3
      IUCN 2019. The IUCN Red List of Threatened Species. Version 2019-1.
      • K See IUCN Terms and conditions of use http://www.iucnredlist.org/info/terms-of-use