Lycopus americanusMuhl. ex W.P.C.Barton

American bugleweed

WFO wfo-0000231365 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Lycopus americanus, photographed by Henry "Nick" Robertson
fig. a Henry "Nick" Robertson, CC BY-SA 4.0 / 2021-09-28 / obs. 160382371
Lycopus americanus, photographed by Ryan Sorrells
fig. b Ryan Sorrells, CC BY 4.0 / obs. 151905809
Lycopus americanus, photographed by Ryan Sorrells
fig. c Ryan Sorrells, CC BY 4.0 / obs. 196670624
Lycopus americanus, photographed by Henry "Nick" Robertson
fig. d Henry "Nick" Robertson, CC BY-SA 4.0 / obs. 164137211
Lycopus americanus, photographed by Henry "Nick" Robertson
fig. e Henry "Nick" Robertson, CC BY-SA 4.0 / obs. 161977838
Lycopus americanus, photographed by Henry "Nick" Robertson
fig. f Henry "Nick" Robertson, CC BY-SA 4.0 / obs. 161605385
Lycopus americanus, photographed by Yann Kemper
fig. g Yann Kemper, CC0 1.0 / obs. 155404734
Lycopus americanus, photographed by Jared Shorma
fig. h Jared Shorma, CC BY 4.0 / obs. 155464110

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 = 574 observations

Peak flowering in Aug, from 574 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 25 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.

  • Lycopus americanus var. laurentianus (Roll.-Germ.) B.Boivin
  • Lycopus americanus var. longii Benner
  • Lycopus americanus var. scabrifolius Fernald
  • Lycopus bracteatus Muhl. ex Link
  • Lycopus europaeus var. integrifolius A.Gray
  • Lycopus europaeus var. sinuatus (Elliott) A.Gray
  • Lycopus heterophyllus Raf.
  • Lycopus integrifolius Raf.
  • Lycopus lacerus Greene
  • Lycopus laurentianus Roll.-Germ.
  • Lycopus longifolius Raf.
  • Lycopus lucidus subsp. americanus (Muhl. ex W.P.C.Barton) Hultén
  • Lycopus lucidus var. americanus (Muhl. ex W.P.C.Barton) A.Gray
  • Lycopus lucidus var. obtusifolius MacMill.
  • Lycopus pauciflorus Raf.
  • Lycopus pensylvanicus Muhl. ex Raf.
  • Lycopus pinnatifidus Raf.
  • Lycopus praealtus Nutt. ex Benth.
  • Lycopus sinuatus Elliott
  • Lycopus sinuatus var. angustifolius Benth.
  • Lycopus sinuatus var. dissectus Benth.
  • Lycopus sinuatus var. intermedius Chapm.
  • Lycopus sinuatus var. vulgaris (Nutt.) Benth.
  • Lycopus vulgaris Nutt.

and 1 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.