Bupleurum tenuissimumL.

WFO wfo-0000575882 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 8 separate observations

Bupleurum tenuissimum, photographed by Mehdi Chetibi
fig. a Mehdi Chetibi, CC BY 4.0 / 2021-11-26 / obs. 170454391
Bupleurum tenuissimum, photographed by Robert H. Wardell
fig. b Robert H. Wardell, CC0 1.0 / obs. 100499716
Bupleurum tenuissimum, photographed by Robert H. Wardell
fig. c Robert H. Wardell, CC0 1.0 / obs. 94777787
Bupleurum tenuissimum, photographed by Crap Fou
fig. d Crap Fou, CC BY 4.0 / obs. 24026351
Bupleurum tenuissimum, photographed by Alice Shanks
fig. e Alice Shanks, CC BY 4.0 / obs. 6671284
Bupleurum tenuissimum, photographed by gjecology
fig. f gjecology, CC BY 4.0 / obs. 151655485
Bupleurum tenuissimum, photographed by Robert H. Wardell
fig. g Robert H. Wardell, CC0 1.0 / obs. 95755342
Bupleurum tenuissimum, photographed by Andre Hosper
fig. h Andre Hosper, CC BY 4.0 / obs. 23755412

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 31 botanical countries

Regions where Bupleurum tenuissimum is native: Algeria, Morocco, Tunisia, North Caucasus, Transcaucasus, Türkiye, Albania, Austria, Baltic States, Bulgaria, Corse, Czechia-Slovakia, Denmark, France, Germany, Great Britain, Greece, Hungary, Italy, Krym, Netherlands, NW. Balkan Pen., Poland, Portugal, Romania, Sardegna, Sicilia, Spain, Sweden, Türkiye-in-Europe, Ukraine AlgeriaMoroccoTunisiaNorth CaucasusTranscaucasusTürkiyeAlbaniaAustriaBaltic StatesBulgariaCorseCzechia-SlovakiaDenmarkFranceGermanyGreeceHungaryItalyKrymNetherlandsNW. Balkan Pen.PolandPortugalRomaniaSiciliaSpainSwedenTürkiye-in-EuropeUkraine Sardegna
Native distribution of Bupleurum tenuissimum, 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. Regions too small to draw at this scale are marked with a dot.
RegionTDWG codeContinent
Albania ALB EUROPE
Austria AUT
Baltic States BLT
Bulgaria BUL
Corse COR
Czechia-Slovakia CZE
Denmark DEN
France FRA
Germany GER
Great Britain GRB
Greece GRC
Hungary HUN
Italy ITA
Krym KRY
Netherlands NET
NW. Balkan Pen. YUG
Poland POL
Portugal POR
Romania ROM
Sardegna SAR
Sicilia SIC
Spain SPA
Sweden SWE
Türkiye-in-Europe TUE
Ukraine UKR
Algeria ALG AFRICA
Morocco MOR
Tunisia TUN
North Caucasus NCS ASIA-TEMPERATE
Transcaucasus TCS
Türkiye TUR

Not drawn on the map: Great Britain. We hold no public-domain boundary for this region, so it is listed rather than guessed at.

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 225 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low -4.8 °C 0.6 °C 6.0 °C
Warmest month, mean daily high 19.3 °C 25.7 °C 28.1 °C
Annual rainfall 522 mm 633 mm 933 mm
Rainfall in the driest quarter 71 mm 105 mm 153 mm

It is found where winters bring light 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 225 research-grade observations of Bupleurum tenuissimum 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 29 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.

  • Agostana tenuissima Bute ex Gray
  • Bupleurum columnae Guss.
  • Bupleurum gerardii G.Gaertn., B.Mey. & Scherb.
  • Bupleurum junceum Pollich
  • Bupleurum junceum var. pollechii (J.F.Gmel.) Spreng.
  • Bupleurum pollichii C.C.Gmel.
  • Bupleurum procumbens Desf.
  • Bupleurum tenue Salisb.
  • Bupleurum tenuissimum f. brevibracteatum H.Wolff
  • Bupleurum tenuissimum f. columnae (Guss.) Lange
  • Bupleurum tenuissimum f. longibracteatum H.Wolff
  • Bupleurum tenuissimum f. paniculatum H.Wolff
  • Bupleurum tenuissimum f. subracemosum H.Wolff
  • Bupleurum tenuissimum subsp. columnae (Guss.) Nyman
  • Bupleurum tenuissimum subsp. eutenuissimum H.Wolff
  • Bupleurum tenuissimum subsp. nanum DC.
  • Bupleurum tenuissimum var. columnae (Guss.) Godr.
  • Bupleurum tenuissimum var. compactum Caruel
  • Bupleurum tenuissimum var. flagelliformis Lange
  • Bupleurum tenuissimum var. genuinum Godr.
  • Bupleurum tenuissimum var. nanum DC.
  • Bupleurum tenuissimum var. procumbens (Desf.) H.Wolff
  • Isophyllum tenuissimum J.Presl & C.Presl
  • Odontites procumbens Spreng.

and 5 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.