Marrubium vulgareL.

White Horehound

WFO wfo-0000236711 Accepted WFO 2026-06 7 photographs CC0 / CC BY

Plate 1 figs. a–g

Marrubium vulgare, photographed by Daniel S.
fig. a Daniel S., CC BY 4.0 / 2022-06-11 / obs. 205335580
Marrubium vulgare, photographed by mark-groeneveld
fig. b mark-groeneveld, CC BY 4.0 / obs. 202173659
Marrubium vulgare, photographed by mark-groeneveld
fig. c mark-groeneveld, CC BY 4.0 / obs. 198987320
Marrubium vulgare, photographed by Annika Lindqvist
fig. d Annika Lindqvist, CC BY 4.0 / obs. 203416701
Marrubium vulgare, photographed by Reid Hardin
fig. e Reid Hardin, CC BY 4.0 / obs. 196076618
Marrubium vulgare, photographed by Annika Lindqvist
fig. f Annika Lindqvist, CC BY 4.0 / obs. 197279326
Marrubium vulgare, photographed by Quentin Groom
fig. g Quentin Groom, CC0 1.0 / obs. 197832146

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 = 955 observations

Peak flowering in May, from 955 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 19 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.

  • Marrubium album Garsault
  • Marrubium apulum Ten.
  • Marrubium ballotoides Boiss. & Balansa
  • Marrubium germanicum Schrank ex Steud.
  • Marrubium hamatum Kunth
  • Marrubium hyperleucum Candargy
  • Marrubium hyperleucum var. brevidens Candargy
  • Marrubium hyperleucum var. comosum Candargy
  • Marrubium uncinatum Stokes
  • Marrubium vaillantii Coss. & Germ.
  • Marrubium vulgare subsp. apulum (Ten.) H.Lindb.
  • Marrubium vulgare subsp. oligodon Barratte
  • Marrubium vulgare var. apulum (Ten.) Trevir.
  • Marrubium vulgare var. caucasicum K.Koch
  • Marrubium vulgare var. gossypinum Nábelek
  • Marrubium vulgare var. lanatum Benth.
  • Marrubium vulgare var. microphyllum Baguet
  • Marrubium vulgare var. vaillantii (Coss. & Germ.) P.Fourn.
  • Prasium marrubium E.H.L.Krause

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.