Pontederia cordataL.

pickerelweed

WFO wfo-0000500933 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Pontederia cordata, photographed by Sawyer Baran
fig. a Sawyer Baran, CC BY 4.0 / 2022-06-04 / obs. 204368680
Pontederia cordata, photographed by Lynn Harper
fig. b Lynn Harper, CC0 1.0 / obs. 205875450
Pontederia cordata, photographed by Kim
fig. c Kim, CC BY 4.0 / obs. 203000337
Pontederia cordata, photographed by Sawyer Baran
fig. d Sawyer Baran, CC BY 4.0 / obs. 204368564
Pontederia cordata, photographed by Mike Tilley
fig. e Mike Tilley, CC BY 4.0 / obs. 203698874
Pontederia cordata, photographed by Lynn Harper
fig. f Lynn Harper, CC0 1.0 / obs. 202299221
Pontederia cordata, photographed by Lauren McLaurin
fig. g Lauren McLaurin, CC BY 4.0 / obs. 202911464
Pontederia cordata, photographed by Joseph Aubert
fig. h Joseph Aubert, CC BY 4.0 / obs. 201290258

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 = 6,004 observations

Peak flowering in Jul, from 6,004 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 49 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.

  • Eichhornia cordata Kunth
  • Narukila cordata Nieuwl.
  • Narukila cordata var. lancifolia Nieuwl.
  • Pontederia angustifolia Pursh
  • Pontederia cordata f. albiflora House
  • Pontederia cordata f. angustifolia (Pursh) Solms
  • Pontederia cordata f. bernardii Lepage
  • Pontederia cordata f. brasiliensis Solms
  • Pontederia cordata f. cordata
  • Pontederia cordata f. latifolia House
  • Pontederia cordata f. ovalis (Mart.) A.Cast.
  • Pontederia cordata f. taenia Fassett
  • Pontederia cordata var. albiflora Short
  • Pontederia cordata var. angustifolia (Pursh) Torr.
  • Pontederia cordata var. cordata
  • Pontederia cordata var. lanceolata (Nutt.) Griseb.
  • Pontederia cordata var. lancifolia (Muhl.) Morong
  • Pontederia cordata var. ovalis (Mart. ex Schult. & Schult.f.) Solms
  • Pontederia lanceolata Nutt.
  • Pontederia lanceolata f. brasiliensis (Solms) Fernald
  • Pontederia lanceolata f. trullifolia Fernald
  • Pontederia lanceolata var. vichadensis F.J.Herm.
  • Pontederia lancifolia Muhl. ex Elliott
  • Pontederia maculata Donn

and 25 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.