Nymphoides aquatica(J.F.Gmel.) Kuntze

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WFO wfo-0001083983 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 8 separate observations

Nymphoides aquatica, photographed by Michelle W. （鍾偉瑋）
fig. a Michelle W. （鍾偉瑋）, CC BY 4.0 / 2022-04-02 / obs. 186494302
Nymphoides aquatica, photographed by Josiah Londerée
fig. b Josiah Londerée, CC BY 4.0 / obs. 177461357
Nymphoides aquatica, photographed by Christine Braaten
fig. c Christine Braaten, CC0 1.0 / obs. 174486711
Nymphoides aquatica, photographed by Andy Jordan
fig. d Andy Jordan, CC BY 4.0 / obs. 164675939
Nymphoides aquatica, photographed by Michelle W. （鍾偉瑋）
fig. e Michelle W. （鍾偉瑋）, CC BY 4.0 / obs. 87368410
Nymphoides aquatica, photographed by Adam Pitcher
fig. f Adam Pitcher, CC0 1.0 / obs. 85137972
Nymphoides aquatica, photographed by Laura Gaudette
fig. g Laura Gaudette, CC BY 4.0 / obs. 33058484
Nymphoides aquatica, photographed by Laura Gaudette
fig. h Laura Gaudette, CC BY 4.0 / obs. 19395460

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.

Native range 11 botanical countries

Regions where Nymphoides aquatica is native: Alabama, Delaware, Florida, Georgia, Louisiana, Maryland, Mississippi, North Carolina, South Carolina, Texas, Virginia AlabamaFloridaGeorgiaLouisianaMarylandMississippiNorth CarolinaSouth CarolinaTexasVirginia Delaware
Native distribution of Nymphoides aquatica, after Kew’s World Checklist of Vascular Plants. Introduced, extinct and doubtful records are excluded, so this is where the plant is from, not everywhere it now grows. Regions too small to draw at this scale are marked with a dot.
RegionTDWG codeContinent
Alabama ALA NORTHERN AMERICA
Delaware DEL
Florida FLA
Georgia GEO
Louisiana LOU
Maryland MRY
Mississippi MSI
North Carolina NCA
South Carolina SCA
Texas TEX
Virginia VRG

Region boundaries approximated from Natural Earth (public domain) and mapped to TDWG World Geographical Scheme for Recording Plant Distributions (WGSRPD) level-3 botanical countries (Brummitt 2001). Indicative, not the official WGSRPD geometry.

Flowering 45 in flower of 47 examined

Peak flowering in Feb. Each bar is the share of Nymphoides aquatica observations in which someone actually recorded the reproductive state and found the plant in flower, not the raw number of flowering records. That distinction matters: people observe plants far more in spring than in winter, so a bare count of flowering records partly measures when people go outside. Dividing by the number examined removes that. 45 of 47 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 6 months have fewer than 5 examined observations, so no proportion is drawn for them. This is still a global aggregate and not a forecast for your garden: the same species flowers on different dates in different hemispheres. Where a species has fewer than 30 flowering records we do not draw this chart at all. Computed from 10.15468/dl.cgje2x.

Also published as 10 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.

  • Hydrocotyle cordata Walter
  • Limnanthemum aquaticum (J.F.Gmel.) Britton
  • Limnanthemum trachyspermum (Michx.) A.Gray
  • Menyanthes brachysperma Griseb.
  • Menyanthes trachysperma Michx.
  • Trachysperma aquatica (J.F.Gmel.) House
  • Trachysperma aquaticum (J.F.Gmel.) House
  • Trachysperma nutans Raf.
  • Villarsia aquatica J.F.Gmel.
  • Villarsia trachysperma (Michx.) Elliott

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.
  3. Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. Retrieved 2026-07-13.
  4. Kew, World Checklist of Vascular Plants (WCVP v16). native distribution by TDWG level-3 botanical country, and life form. CC BY 3.0. Retrieved 2026-06-04.

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