Epilobium angustifoliumL.

fireweed

WFO wfo-0000668750 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Epilobium angustifolium, photographed by Нурхайдарова Татьяна
fig. a Нурхайдарова Татьяна, CC BY 4.0 / 2022-06-11 / obs. 205195170
Epilobium angustifolium, photographed by Bryn
fig. b Bryn, CC BY 4.0 / obs. 205965515
Epilobium angustifolium, photographed by Jack Forrester
fig. c Jack Forrester, CC BY 4.0 / obs. 205824236
Epilobium angustifolium, photographed by Tait Sougstad
fig. d Tait Sougstad, CC0 1.0 / obs. 205549302
Epilobium angustifolium, photographed by Jack Forrester
fig. e Jack Forrester, CC BY 4.0 / obs. 205823996
Epilobium angustifolium, photographed by Jack Forrester
fig. f Jack Forrester, CC BY 4.0 / obs. 205824543
Epilobium angustifolium, photographed by Michel Langeveld
fig. g Michel Langeveld, CC BY 4.0 / obs. 204363280
Epilobium angustifolium, photographed by Quentin Groom
fig. h Quentin Groom, CC0 1.0 / obs. 203786652

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 = 21,371 observations

Peak flowering in Jul, from 21,371 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 82 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.

  • Chamaenerion angustifolium (L.) Schur
  • Chamaenerion angustifolium (L.) Scop.
  • Chamaenerion angustifolium f. leiostylum Berlin
  • Chamaenerion angustifolium f. pubescens (Hausskn.) Kitag.
  • Chamaenerion angustifolium subsp. circumvagum (Mosquin) Moldenke
  • Chamaenerion angustifolium subsp. macrophyllum (Hausskn.) Czerep.
  • Chamaenerion angustifolium var. abbreviatum Lunell
  • Chamaenerion angustifolium var. album Yue Zhang & J.Y.Ma
  • Chamaenerion angustifolium var. canescens (Alph.Wood) Britton
  • Chamaenerion angustifolium var. intermedium Lange
  • Chamaenerion angustifolium var. intermedium (Wormsk.) Lange
  • Chamaenerion angustifolium var. karsianum Tzvelev
  • Chamaenerion angustifolium var. macranthum Malyschev
  • Chamaenerion angustifolium var. platyphyllum Daniels
  • Chamaenerion angustifolium var. pubescens (Hausskn.) Tzvelev
  • Chamaenerion angustifolium var. spectabile Simmons
  • Chamaenerion angustissimum (Weber) Grossh.
  • Chamaenerion danielsii (D.Löve) Czerep.
  • Chamaenerion denticulatum Schur
  • Chamaenerion spicatum (Lam.) Gray
  • Chamaenerion spicatum f. album Cockerell
  • Chamaenerium angustifolium var. spectabile Simmons
  • Chamerion angustifolium (L.) Holub
  • Chamerion angustifolium f. pleniflorum (Nakai) Yonek.

and 58 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.