Alisma trivialePursh

northern water-plantain

WFO wfo-0000755508 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Alisma triviale, photographed by Ryan Sorrells
fig. a Ryan Sorrells, CC BY 4.0 / 2021-09-28 / obs. 160508578
Alisma triviale, photographed by Jared Shorma
fig. b Jared Shorma, CC BY 4.0 / obs. 155464542
Alisma triviale, photographed by Mary Krieger
fig. c Mary Krieger, CC BY 4.0 / obs. 143147652
Alisma triviale, photographed by Braden J. Judson
fig. d Braden J. Judson, CC0 1.0 / obs. 149098245
Alisma triviale, photographed by Erin Springinotic
fig. e Erin Springinotic, CC0 1.0 / obs. 160540863
Alisma triviale, photographed by mark-groeneveld
fig. f mark-groeneveld, CC BY 4.0 / obs. 144729699
Alisma triviale, photographed by scaup
fig. g scaup, CC BY 4.0 / obs. 151591968
Alisma triviale, photographed by Ian Whyte
fig. h Ian Whyte, CC0 1.0 / obs. 172175071

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.

Flowering n = 586 observations

Peak flowering in Jul, from 586 community-annotated observations worldwide. This is a global aggregate, not a forecast for your garden: the same species flowers on different dates in different hemispheres, and citizen-science records cluster near cities, at weekends, and in spring. Where a species has fewer than 30 annotated records we do not draw this chart at all.

Also published as 11 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.

  • Alisma brevipes Greene
  • Alisma odoratum Raf.
  • Alisma plantago-aquatica subsp. brevipes (Greene) Sam.
  • Alisma plantago-aquatica var. americanum Schult. & Schult.f.
  • Alisma plantago-aquatica var. brevipes (Greene) Vict.
  • Alisma plantago-aquatica var. triviale (Pursh) Britton, Sterns & Poggenb.
  • Alisma roseum Raf.
  • Alisma subcordatum var. superbum Lunell
  • Alisma superbum Lunell
  • Alisma superbum var. angustissimum Lunell
  • Alisma superbum var. lanceolatum Lunell

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.