Euphorbia seguierianaNeck.

WFO wfo-0000964653 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 8 separate observations

Euphorbia seguieriana, photographed by Yann Kemper
fig. a Yann Kemper, CC0 1.0 / 2022-06-02 / obs. 202659025
Euphorbia seguieriana, photographed by Yann Kemper
fig. b Yann Kemper, CC0 1.0 / obs. 202749478
Euphorbia seguieriana, photographed by Сергей Голубев
fig. c Сергей Голубев, CC BY 4.0 / obs. 196700753
Euphorbia seguieriana, photographed by Aleksei Baushev
fig. d Aleksei Baushev, CC BY 4.0 / obs. 196461958
Euphorbia seguieriana, photographed by Aleksei Baushev
fig. e Aleksei Baushev, CC BY 4.0 / obs. 196461293
Euphorbia seguieriana, photographed by Galyna Mykytynets
fig. f Galyna Mykytynets, CC BY 4.0 / obs. 170564763
Euphorbia seguieriana, photographed by Galyna Mykytynets
fig. g Galyna Mykytynets, CC BY 4.0 / obs. 171442421
Euphorbia seguieriana, photographed by Galyna Mykytynets
fig. h Galyna Mykytynets, CC BY 4.0 / obs. 172680219

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.

The specimen a real sheet, in a real collection

Herbarium
The New York Botanical Garden
Accession
00469536
Filed as
Euphorbia seguieriana Neck.
Det. by
M. Khutsishvili
Collected
H. I. Stevens 2002-06-05
Origin
GE
The sheet
View the digitised specimen (CC BY 4.0)

A real pressed plant, in a real collection, under the accession number above. Not an illustration of one. The holding institution does not serve this sheet’s image to third parties, so there is no photograph here. The record is real and the link goes to it. Where we hold no openly licensed sheet for a species this section is simply absent, and where a sheet never recorded who determined it, that field stays empty rather than being filled in. Roughly half of all herbarium sheets never recorded a determiner, which is ordinary.

Native range 35 botanical countries

Regions where Euphorbia seguieriana is native: Afghanistan, Iran, Irkutsk, Kazakhstan, Krasnoyarsk, North Caucasus, Transcaucasus, Türkiye, Turkmenistan, Uzbekistan, West Siberia, Xinjiang, Pakistan, Albania, Austria, Belgium, Bulgaria, Corse, Czechia-Slovakia, East European Russia, France, Germany, Greece, Hungary, Italy, Krym, Netherlands, NW. Balkan Pen., Poland, Romania, South European Russia, Spain, Switzerland, Türkiye-in-Europe, Ukraine AfghanistanIranIrkutskKazakhstanKrasnoyarskNorth CaucasusTranscaucasusTürkiyeTurkmenistanUzbekistanWest SiberiaXinjiangPakistanAlbaniaAustriaBelgiumBulgariaCorseCzechia-SlovakiaEast European RussiaFranceGermanyGreeceHungaryItalyKrymNetherlandsNW. Balkan Pen.PolandRomaniaSouth European RussiaSpainSwitzerlandTürkiye-in-EuropeUkraine
Native distribution of Euphorbia seguieriana, 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
Albania ALB EUROPE
Austria AUT
Belgium BGM
Bulgaria BUL
Corse COR
Czechia-Slovakia CZE
East European Russia RUE
France FRA
Germany GER
Greece GRC
Hungary HUN
Italy ITA
Krym KRY
Netherlands NET
NW. Balkan Pen. YUG
Poland POL
Romania ROM
South European Russia RUS
Spain SPA
Switzerland SWI
Türkiye-in-Europe TUE
Ukraine UKR
Afghanistan AFG ASIA-TEMPERATE
Iran IRN
Irkutsk IRK
Kazakhstan KAZ
Krasnoyarsk KRA
North Caucasus NCS
Transcaucasus TCS
Türkiye TUR
Turkmenistan TKM
Uzbekistan UZB
West Siberia WSB
Xinjiang CHX
Pakistan PAK ASIA-TROPICAL

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 75 in flower of 108 examined

Peak flowering in May. Each bar is the share of Euphorbia seguieriana 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. 75 of 108 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 6 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.

Where it actually grows measured, from 1,975 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low -13.9 °C -4.8 °C 1.0 °C
Warmest month, mean daily high 23.6 °C 26.4 °C 30.6 °C
Annual rainfall 340 mm 540 mm 906 mm
Rainfall in the driest quarter 60 mm 97 mm 176 mm

It is found where winters bring hard frost. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 1,975 research-grade observations of Euphorbia seguieriana that carry a coordinate, and this is the range those places actually span. The 5th and 95th percentiles are used rather than the minimum and maximum, because a single cultivated specimen in a heated conservatory should not widen a tropical plant's range to the Arctic.

This is not a hardiness zone. A USDA zone is the average annual extreme minimum temperature. The figure above is the mean daily minimum of the coldest month, which is a different quantity and is typically far warmer. Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one. Climate from CHELSA V2.1 (Karger et al. 2017); occurrences from 10.15468/dl.cgje2x.

Also published as 60 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.

  • Esula gerardiana Fourr.
  • Euphorbia caiogala Ehrh.
  • Euphorbia campestris Cham. & Schltdl.
  • Euphorbia firma Ledeb.
  • Euphorbia gerardiana Jacq.
  • Euphorbia gerardiana prol. loiseleurii Rouy
  • Euphorbia gerardiana subsp. saxicola (Velen.) Velen.
  • Euphorbia gerardiana var. arenivaga Martrin-Donos
  • Euphorbia gerardiana var. dentata Chabert
  • Euphorbia gerardiana var. dolomitica Liou
  • Euphorbia gerardiana var. firma (Ledeb.) Boiss.
  • Euphorbia gerardiana var. hohenackeri Boiss.
  • Euphorbia gerardiana var. homophylla (Lange ex Schrank) Nyman
  • Euphorbia gerardiana var. intermedia Savul.
  • Euphorbia gerardiana var. lanceolata Cariot
  • Euphorbia gerardiana var. latifolia J.J.Schmitz & Regel
  • Euphorbia gerardiana var. loiseleurii (Rouy) Douin
  • Euphorbia gerardiana var. minor Duby
  • Euphorbia gerardiana var. multicaulis (Thuill.) Chabert
  • Euphorbia gerardiana var. saxicola Velen.
  • Euphorbia gerardiana var. sturii Holuby
  • Euphorbia hohenackeri
  • Euphorbia homophylla Lange ex Boiss.
  • Euphorbia linariifolia Lam.

and 36 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.
  3. 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.