Bupleurum petraeumL.

WFO wfo-0000575651 Accepted WFO 2026-06 5 photographs CC BY

Plate 1 figs. a–e · 2 observations

This species has been photographed under an open licence only 2 times, so some figures below are different views of the same plant, taken on the same day, rather than different individuals. They are usually different parts of it: the leaf, the flower, the bark.

Bupleurum petraeum, photographed by Ljaž
fig. a Ljaž, CC BY 4.0 / 2021-09-25 / obs. 159555917
Bupleurum petraeum, photographed by Ljaž
fig. b Ljaž, CC BY 4.0 / obs. 151791721
Bupleurum petraeum, photographed by Ljaž
fig. c Ljaž, CC BY 4.0 / obs. 159555960
Bupleurum petraeum, photographed by Ljaž
fig. d Ljaž, CC BY 4.0 / obs. 151791785
Bupleurum petraeum, photographed by Ljaž
fig. e Ljaž, CC BY 4.0 / obs. 151791860

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 4 botanical countries

Regions where Bupleurum petraeum is native: Austria, France, Italy, NW. Balkan Pen. AustriaFranceItalyNW. Balkan Pen.
Native distribution of Bupleurum petraeum, 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
France FRA
Italy ITA
NW. Balkan Pen. YUG

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.

Where it actually grows measured, from 74 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low -14.9 °C -10.9 °C -8.0 °C
Warmest month, mean daily high 14.0 °C 16.0 °C 19.0 °C
Annual rainfall 1,202 mm 1,810 mm 3,252 mm
Rainfall in the driest quarter 189 mm 276 mm 506 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 74 research-grade observations of Bupleurum petraeum 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.

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.

  • Bupleurum baumgartenianum Schur
  • Bupleurum bicalyculatum Bellardi
  • Bupleurum denticulatum Bellard ex Spreng.
  • Bupleurum graminifolium Vahl
  • Bupleurum graminifolium var. bicalyculatum (Bell.) DC.
  • Bupleurum graminifolium var. dolichotum (Briq.) Rouy & E.G.Camus
  • Bupleurum graminifolium var. globosum (Briq.) Rouy & E.G.Camus
  • Bupleurum graminifolium var. lonchophorum (Briq.) Rouy & E.G.Camus
  • Bupleurum incurvum Bellardi
  • Bupleurum petraeum f. dolichatum (Briq.) H.Wolff
  • Bupleurum petraeum f. globosum (Briq.) H.Wolff
  • Bupleurum petraeum f. incurvum (Bell.) H.Wolff
  • Bupleurum petraeum f. lonchophorum (Briq.) H.Wolff
  • Bupleurum petraeum subvar. dolichatum Briq.
  • Bupleurum petraeum subvar. globosum Briq.
  • Bupleurum petraeum subvar. incurvum (Bellardi) Briq.
  • Bupleurum petraeum subvar. lonchophorum Briq.
  • Bupleurum petraeum var. dolichatum (Briq.) Rouy & E.G.Camus
  • Bupleurum petraeum var. dolichotum Briq.
  • Bupleurum petraeum var. globosum Briq.
  • Bupleurum petraeum var. glogosum (Briq.) Rouy & E.G.Camus
  • Bupleurum petraeum var. incurvum (Bell.) Rouy & E.G.Camus
  • Bupleurum petraeum var. lonchophorum Briq.
  • Bupleurum petraeum var. lonchophorum (Briq.) Rouy & E.G.Camus

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.
  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.