Ludwigia octovalvis(Jacq.) P.H.Raven

Mexican Primrose-willow

WFO wfo-0000443427 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Ludwigia octovalvis, photographed by Center for Urban Ecology
fig. a Center for Urban Ecology, CC0 1.0 / 2022-05-11 / obs. 197059490
Ludwigia octovalvis, photographed by chiuluan
fig. b chiuluan, CC BY 4.0 / obs. 198414564
Ludwigia octovalvis, photographed by Josiah Londerée
fig. c Josiah Londerée, CC BY 4.0 / obs. 193389401
Ludwigia octovalvis, photographed by Josiah Londerée
fig. d Josiah Londerée, CC BY 4.0 / obs. 193388606
Ludwigia octovalvis, photographed by chiuluan
fig. e chiuluan, CC BY 4.0 / obs. 195682776
Ludwigia octovalvis, photographed by Center for Urban Ecology
fig. f Center for Urban Ecology, CC0 1.0 / obs. 195398826
Ludwigia octovalvis, photographed by Greg Tasney
fig. g Greg Tasney, CC BY-SA 4.0 / obs. 196736189
Ludwigia octovalvis, photographed by Heather DeGaetano
fig. h Heather DeGaetano, CC0 1.0 / obs. 201924557

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 = 2,128 observations

Peak flowering in Sep, from 2,128 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 109 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.

  • Adenola longipes Raf.
  • Epilobium fruticosum Lour.
  • Epilobium tetragonum Lour.
  • Isnardia capitata DC.
  • Jussiaea angustifolia Lam.
  • Jussiaea angustifolia Blume
  • Jussiaea angustifolia var. linearis Harv.
  • Jussiaea blumeana DC.
  • Jussiaea burmanni DC.
  • Jussiaea calycina C.Presl
  • Jussiaea clavata M.E.Jones
  • Jussiaea decumbens Benth. ex Wall.
  • Jussiaea didymosperma H.Perrier
  • Jussiaea erythrocaulis Mart. ex Micheli
  • Jussiaea exaltata Roxb.
  • Jussiaea frutescens J.Jacq.
  • Jussiaea fruticosa DC.
  • Jussiaea haenkeana Steud.
  • Jussiaea hirsuta Mill.
  • Jussiaea hirsuta C.Presl
  • Jussiaea junghuhniana Miq.
  • Jussiaea ligustrifolia Kunth
  • Jussiaea linearis Willd.
  • Jussiaea linearis Hochst.

and 85 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.