Pluchea odorata(L.) Cass.

marsh fleabane

WFO wfo-0000131102 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Pluchea odorata, photographed by Mauricio Soto David
fig. a Mauricio Soto David, CC BY 4.0 / 2022-05-21 / obs. 205337744
Pluchea odorata, photographed by Josiah Londerée
fig. b Josiah Londerée, CC BY 4.0 / obs. 193387194
Pluchea odorata, photographed by Josiah Londerée
fig. c Josiah Londerée, CC BY 4.0 / obs. 193386127
Pluchea odorata, photographed by Claire Herzog
fig. d Claire Herzog, CC BY 4.0 / obs. 191887381
Pluchea odorata, photographed by Millie Basden
fig. e Millie Basden, CC BY 4.0 / obs. 187986098
Pluchea odorata, photographed by Josiah Londerée
fig. f Josiah Londerée, CC BY 4.0 / obs. 177461156
Pluchea odorata, photographed by Josiah Londerée
fig. g Josiah Londerée, CC BY 4.0 / obs. 185845039
Pluchea odorata, photographed by Tom Lazar
fig. h Tom Lazar, CC0 1.0 / obs. 199223061

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 = 1,261 observations

Peak flowering in Sep, from 1,261 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 12 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.

  • Conyza odorata L.
  • Conyza purpurascens Sw.
  • Gymnostylis marilandica Raf.
  • Placus odoratus (L.) M.Gómez
  • Placus purpurascens (Sw.) M.Gómez
  • Placus purpurascens var. glabratum M.Gómez
  • Placus purpurascens var. purpurascens
  • Pluchea petiolata Cass.
  • Pluchea purpurascens (Sw.) DC.
  • Pluchea purpurascens f. purpurascens
  • Pluchea purpurascens var. succulenta Fernald
  • Pluchea senegalensis Klatt

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.