Erechtites hieraciifolius(L.) Raf. ex DC.

American burnweed

WFO wfo-0000028940 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Erechtites hieraciifolius, photographed by stephen
fig. a stephen, CC BY 4.0 / 2022-06-10 / obs. 205318115
Erechtites hieraciifolius, photographed by Leila Dasher
fig. b Leila Dasher, CC BY 4.0 / obs. 204893525
Erechtites hieraciifolius, photographed by Josiah Londerée
fig. c Josiah Londerée, CC BY 4.0 / obs. 197946948
Erechtites hieraciifolius, photographed by Jay Pruett
fig. d Jay Pruett, CC BY 4.0 / obs. 185957911
Erechtites hieraciifolius, photographed by Caleb Catto
fig. e Caleb Catto, CC BY 4.0 / obs. 197620730
Erechtites hieraciifolius, photographed by Tom Lazar
fig. f Tom Lazar, CC0 1.0 / obs. 199958421
Erechtites hieraciifolius, photographed by Arturo Santos
fig. g Arturo Santos, CC BY 4.0 / obs. 199550645
Erechtites hieraciifolius, photographed by Arturo Santos
fig. h Arturo Santos, CC BY 4.0 / obs. 199816245

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 = 1,183 observations

Peak flowering in Sep, from 1,183 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 32 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.

  • Erechtites agrestis (Sw.) Standl. & Steyerm.
  • Erechtites cacalioides Less.
  • Erechtites carduifolius (Desf.) DC.
  • Erechtites carduifolius var. carduifolius
  • Erechtites carduifolius var. latifolius Klatt
  • Erechtites elongatus A.Gray
  • Erechtites hieraciifolius Walp.
  • Erechtites hieraciifolius f. hieraciifolius
  • Erechtites hieraciifolius f. minor Waisb.
  • Erechtites hieraciifolius var. cacalioides (Fisch. ex Spreng.) Griseb.
  • Erechtites hieraciifolius var. carduifolia (Desf.) Griseb.
  • Erechtites hieraciifolius var. carduifolius (Desf.) Griseb.
  • Erechtites hieraciifolius var. glabrescens Kuntze
  • Erechtites hieraciifolius var. hieraciifolius
  • Erechtites hieraciifolius var. intermedius Fernald
  • Erechtites hieraciifolius var. praealtus Fernald
  • Erechtites hieraciifolius var. typicus Fernald
  • Erechtites megalocarpa Fernald
  • Erechtites praealtus Raf.
  • Gynura aspera Ridl.
  • Gynura malasica Ridl.
  • Neoceis carduifolia (Desf.) Cass.
  • Neoceis hieraciifolia (L.) Cass.
  • Ptileris hieracifolia (L.) Raf. ex B.D.Jacks.

and 8 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.