Mentha pulegiumL.

Pennyroyal

WFO wfo-0000241235 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Mentha pulegium, photographed by Dylan Wishart
fig. a Dylan Wishart, CC BY 4.0 / 2022-05-03 / obs. 195286680
Mentha pulegium, photographed by Sean Haight
fig. b Sean Haight, CC0 1.0 / obs. 177762549
Mentha pulegium, photographed by naturewatchwidow
fig. c naturewatchwidow, CC BY 4.0 / obs. 176107678
Mentha pulegium, photographed by William G. Borges
fig. d William G. Borges, CC BY 4.0 / obs. 180620596
Mentha pulegium, photographed by Sean Haight
fig. e Sean Haight, CC0 1.0 / obs. 176914317
Mentha pulegium, photographed by Gabriel Laufer
fig. f Gabriel Laufer, CC0 1.0 / obs. 175251545
Mentha pulegium, photographed by Florencia Grattarola
fig. g Florencia Grattarola, CC BY 4.0 / obs. 174182939
Mentha pulegium, photographed by Alice Shanks
fig. h Alice Shanks, CC BY 4.0 / obs. 172207917

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 = 1,622 observations

Peak flowering in Jul, from 1,622 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 88 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.

  • Calamintha fenzlii Vis.
  • Melissa pulegium (L.) Griseb.
  • Mentha albarracinensis Pau
  • Mentha aromatica Salisb.
  • Mentha aucheri Pérard
  • Mentha daghestanica Boriss.
  • Mentha erinoides Heldr.
  • Mentha exigua L.
  • Mentha gibraltarica Willd.
  • Mentha gryparia Heldr.
  • Mentha hirtiflora Opiz ex Heinr.Braun
  • Mentha montana Lowe ex Benth.
  • Mentha numidica Poir.
  • Mentha pulegioides Dumort.
  • Mentha pulegium f. alba Rainha
  • Mentha pulegium f. albiflora Cheshm.
  • Mentha pulegium f. anodonta Topitz
  • Mentha pulegium f. brusanensis Topitz
  • Mentha pulegium f. cephalonia Heinr.Braun
  • Mentha pulegium f. cermatisa Topitz
  • Mentha pulegium f. communis Topitz
  • Mentha pulegium f. foetida Topitz
  • Mentha pulegium f. hellenica Topitz
  • Mentha pulegium f. macrostylos Topitz

and 64 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.