Equisetum arvenseL.

field horsetail

WFO wfo-0001108914 Accepted WFO 2026-06 7 photographs CC0 / CC BY

Plate 1 figs. a–g

Equisetum arvense, photographed by Светлана Царахова
fig. a Светлана Царахова, CC0 1.0 / 2022-06-13 / obs. 205754849
Equisetum arvense, photographed by Syd Cannings
fig. b Syd Cannings, CC BY 4.0 / obs. 205960136
Equisetum arvense, photographed by Anastasia_Surkova
fig. c Anastasia_Surkova, CC BY 4.0 / obs. 205895291
Equisetum arvense, photographed by Anastasia_Surkova
fig. d Anastasia_Surkova, CC BY 4.0 / obs. 205895711
Equisetum arvense, photographed by Pavel Kacl
fig. e Pavel Kacl, CC BY 4.0 / obs. 205684008
Equisetum arvense, photographed by Tatiana Strus
fig. f Tatiana Strus, CC BY 4.0 / obs. 204586819
Equisetum arvense, photographed by Alexis Tinker-Tsavalas
fig. g Alexis Tinker-Tsavalas, CC BY 4.0 / obs. 205538905

Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.

Confused withby our own model

These are not lookalikes we guessed at. Each one is a species our identification model genuinely mistook for this plant, and how many times. The error rate is published.

Also published as 95 synonyms

A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.

  • Allostelites arvensis (L.) Börner
  • Equisetum alpestre (Wahlenb.) Landolt
  • Equisetum arcticum Rupr.
  • Equisetum arvense monstr.proliferum Luerss.
  • Equisetum arvense f. agreste Klinge
  • Equisetum arvense f. alpestre (Wahlenb.) Döll
  • Equisetum arvense f. arcticum (Rupr.) M.Broun
  • Equisetum arvense f. arvense
  • Equisetum arvense f. atratidens Lepage
  • Equisetum arvense f. boreale (Bong.) Asch.
  • Equisetum arvense f. caespitosum J.Rousseau
  • Equisetum arvense f. campestre (Schultz) Milde
  • Equisetum arvense f. decumbens (G.Mey.) W.D.J.Koch
  • Equisetum arvense f. diffusum (A.A.Eaton) Clute
  • Equisetum arvense f. frondescens Döll
  • Equisetum arvense f. irriguum (Milde) C.W.Christ.
  • Equisetum arvense f. loennboehmii Dörfl.
  • Equisetum arvense f. macrostachyum A.A.Eaton
  • Equisetum arvense f. microstachyum A.A.Eaton
  • Equisetum arvense f. nanum (A.Braun ex Döll) M.Broun
  • Equisetum arvense f. nanum A.Braun ex Döll
  • Equisetum arvense f. nemorosum A.Braun ex Döll
  • Equisetum arvense f. nemorosum (A.Braun) Hegi
  • Equisetum arvense f. nemorosum (A.Braun) Murr

and 71 more.

Sourcesevery claim on this page

  1. World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
  2. iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.

We publish what we can source and we say so when we cannot. This page has no care advice, no toxicity claim and no native range, because we do not yet have those from a source we can cite.