Chaiturus marrubiastrum(L.) Ehrh. ex Rchb.

lion's tail

WFO wfo-0000836548 Accepted WFO 2026-06 8 photographs CC BY / CC BY-SA

Plate 1 figs. a–h · 8 separate observations

Chaiturus marrubiastrum, photographed by Jeff D Hansen
fig. a Jeff D Hansen, CC BY 4.0 / 2021-08-06 / obs. 149043587

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.

Native range 25 botanical countries

Regions where Chaiturus marrubiastrum is native: Altay, Kazakhstan, Kirgizstan, North Caucasus, Transcaucasus, Türkiye, Uzbekistan, West Siberia, Xinjiang, Austria, Belarus, Bulgaria, Central European Russia, Czechia-Slovakia, East European Russia, Germany, Greece, Italy, Krym, NW. Balkan Pen., Poland, Romania, South European Russia, Spain, Ukraine AltayKazakhstanKirgizstanNorth CaucasusTranscaucasusTürkiyeUzbekistanWest SiberiaXinjiangAustriaBelarusBulgariaCentral European RussiaCzechia-SlovakiaEast European RussiaGermanyGreeceItalyKrymNW. Balkan Pen.PolandRomaniaSouth European RussiaSpainUkraine
Native distribution of Chaiturus marrubiastrum, after Kew’s World Checklist of Vascular Plants. Introduced, extinct and doubtful records are excluded, so this is where the plant is from, not everywhere it now grows.
RegionTDWG codeContinent
Austria AUT EUROPE
Belarus BLR
Bulgaria BUL
Central European Russia RUC
Czechia-Slovakia CZE
East European Russia RUE
Germany GER
Greece GRC
Italy ITA
Krym KRY
NW. Balkan Pen. YUG
Poland POL
Romania ROM
South European Russia RUS
Spain SPA
Ukraine UKR
Altay ALT ASIA-TEMPERATE
Kazakhstan KAZ
Kirgizstan KGZ
North Caucasus NCS
Transcaucasus TCS
Türkiye TUR
Uzbekistan UZB
West Siberia WSB
Xinjiang CHX

Region boundaries approximated from Natural Earth (public domain) and mapped to TDWG World Geographical Scheme for Recording Plant Distributions (WGSRPD) level-3 botanical countries (Brummitt 2001). Indicative, not the official WGSRPD geometry.

Flowering 63 in flower of 94 examined

Proportion of examined Chaiturus marrubiastrum in flower, by month
Month In flower Examined Share 95% interval
Jan 0 3 too few examined
Feb 0 0 too few examined
Mar 0 0 too few examined
Apr 0 6 0% 0% to 39%
May 0 0 too few examined
Jun 0 6 0% 0% to 39%
Jul 26 27 96% 82% to 99%
Aug 21 23 91% 73% to 98%
Sep 13 19 68% 46% to 85%
Oct 2 5 40% 12% to 77%
Nov 1 5 20% 4% to 62%
Dec 0 0 too few examined

Peak flowering in Jul. Each bar is the share of Chaiturus marrubiastrum observations in which someone actually recorded the reproductive state and found the plant in flower, not the raw number of flowering records. That distinction matters: people observe plants far more in spring than in winter, so a bare count of flowering records partly measures when people go outside. Dividing by the number examined removes that. 63 of 94 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 5 months have fewer than 5 examined observations, so no proportion is drawn for them. This is still a global aggregate and not a forecast for your garden: the same species flowers on different dates in different hemispheres. Where a species has fewer than 30 flowering records we do not draw this chart at all. Computed from 10.15468/dl.cgje2x.

Also published as 7 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.

  • Cardiaca marrubiastrum (L.) Schreb.
  • Chaiturus leonuroides Willd.
  • Chaiturus morrubifolius St.-Lag.
  • Leonurus marrubiastrum L.
  • Leonurus marrubiastrum var. simplicissimus K.Koch
  • Leonurus marrubifolius St.-Lag.
  • Leonurus parviflorus Salisb.

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.
  3. Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. Retrieved 2026-07-13.
  4. Kew, World Checklist of Vascular Plants (WCVP v16). native distribution by TDWG level-3 botanical country, and life form. CC BY 3.0. Retrieved 2026-06-04.

We publish what we can source and we say so when we cannot. This page has no care advice and no toxicity claim, because we do not yet have those from a source we can cite.