Ludwigia alternifoliaL.

Seedbox

WFO wfo-0001087420 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Ludwigia alternifolia, photographed by Thomas Koffel
fig. a Thomas Koffel, CC BY 4.0 / 2022-04-17 / obs. 188906664
Ludwigia alternifolia, photographed by Yann Kemper
fig. b Yann Kemper, CC0 1.0 / obs. 184964232
Ludwigia alternifolia, photographed by Amber M. King
fig. c Amber M. King, CC BY 4.0 / obs. 169033892
Ludwigia alternifolia, photographed by Lynn Harper
fig. d Lynn Harper, CC0 1.0 / obs. 184090960
Ludwigia alternifolia, photographed by Jeff Clark
fig. e Jeff Clark, CC BY 4.0 / obs. 166127804
Ludwigia alternifolia, photographed by Matt Schultz
fig. f Matt Schultz, CC0 1.0 / obs. 167584229
Ludwigia alternifolia, photographed by Jay Pruett
fig. g Jay Pruett, CC BY 4.0 / obs. 163915552
Ludwigia alternifolia, photographed by Susan Christman Williams
fig. h Susan Christman Williams, CC0 1.0 / obs. 164078144

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.

Flowering n = 831 observations

Peak flowering in Jul, from 831 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 16 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.

  • Isnardia alternifolia (L.) DC.
  • Isnardia alternifolia var. salicifolia (Poir.) DC.
  • Isnardia alternifolia var. uniflora (Raf.) DC.
  • Isnardia aurantiaca DC.
  • Ludwigia alternifolia var. alternifolia
  • Ludwigia alternifolia var. linearifolia Britton
  • Ludwigia alternifolia var. pubescens E.J.Palmer & Steyerm.
  • Ludwigia alternifolia var. typica Munz
  • Ludwigia angustifolia var. ramosissima (Walter) Poir.
  • Ludwigia aurantiaca Raf.
  • Ludwigia macrocarpa Michx.
  • Ludwigia microcarpa Link
  • Ludwigia pruinosa Raf.
  • Ludwigia ramosissima Walter
  • Ludwigia salicifolia Poir.
  • Ludwigia uniflora Raf.

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.