Palestine Buckthorn: The Thorned Rhamnion of the Southern Levant and Christ’s Crown of Thorns
Rhamnus lycioides subsp. graeca
Synonym: Rhamnus palaestina Boiss. / Rhamnus palaestinus
A serious southern Levant Rhamnaceae candidate within the botanical field of the Passion
Palestine Buckthorn is a serious secondary candidate for Christ’s Crown of Thorns within the central Rhamnion-alliance field. Its case rests on a narrow but substantial body of evidence: Rhamnaceae placement, Palestine-linked synonymy, accepted southern Levant distribution, thorn-bearing shrub morphology, and plausible workability as locally gathered branch material. These features make it stronger than unarmed buckthorns and remote devotional ornamentals, while still weaker than the leading traditional candidates.
The accepted modern name is Rhamnus lycioides subsp. graeca (Boiss. & Reut.) Tutin. Kew treats Rhamnus palaestina Boiss. as a synonym of that accepted subspecies, and World Flora Online records the same synonym relationship (Plants of the World Online 2026a; World Flora Online 2026). Kew lists the accepted subspecies as native to Palestine and neighboring eastern Mediterranean territories, including Lebanon-Syria, Cyprus, Türkiye, Greece, and the East Aegean Islands (Plants of the World Online 2026b).
The species should be treated as a botanical-historical candidate rather than a proven traditional identification. No secure ancient Christian, Roman, or Jewish source identifies Palestine Buckthorn as the Crown plant. The Gospels describe a crown made from thorns, but they do not identify the plant species. The evidence for Palestine Buckthorn therefore rests on historical-botanical plausibility: local presence, thorn-bearing branch material, Rhamnaceae placement, and workability.
1. Taxonomy and Naming Relevance
The taxonomic identity should be given precisely:
Accepted name: Rhamnus lycioides subsp. graeca (Boiss. & Reut.) Tutin
Family: Rhamnaceae
Important synonym: Rhamnus palaestina Boiss.
The synonym Rhamnus palaestina matters because it preserves a Palestine-linked botanical identity. It should not be treated as devotional proof. It does not mean “Christ’s thorn,” and it does not carry the explicit Passion association found in names such as spina-christi. Its value is geographical and taxonomic: it places this thorn-bearing buckthorn within the southern Levant candidate field. Kew and World Flora Online both treat Rhamnus palaestina as a synonym of the accepted Rhamnus lycioides subsp. graeca (Plants of the World Online 2026a; World Flora Online 2026).
A second taxonomic caution is necessary. The broader species Rhamnus lycioides is complex and includes multiple subspecies. Crown Flora does not treat every record of Rhamnus lycioides as evidence for the Palestine-linked eastern taxon. This article uses the accepted subspecies name whenever the argument depends on Palestine or the southern Levant (World Flora Online 2026).
2. Rhamnaceae Placement and Rhamnion Relevance
The Rhamnaceae placement gives Palestine Buckthorn immediate relevance. Some of the strongest Crown Flora candidates belong to this family, especially Ziziphus spina-christi and Paliurus spina-christi. Palestine Buckthorn does not share their explicit Christ-thorn name tradition, but it shares the family and adds a Palestine-linked taxonomic profile.
This makes it more important than Rhamnus alaternus as possible Crown material. Rhamnus alaternus is useful for comparison, but its ordinary morphology is described by authoritative floristic sources as unarmed. Palestine Buckthorn, by contrast, is regionally described as a shrub with thorny and tangled stems (Mahmiyat 2026).
The wider flora supports the plausibility of thorn-bearing shrubs in the Passion landscape. Ronel and Lev-Yadun (2012) recorded 294 spiny, thorny, and prickly species in the wild flora of Israel, showing that armed plants are a normal and widespread feature of the regional vegetation. This evidence does not identify Palestine Buckthorn as the Crown plant but it does show that a thorned local shrub belongs within the realistic botanical field.
3. Southern Levant Availability
A serious Crown-of-Thorns candidate must be plausible in the southern Levant. Palestine Buckthorn satisfies that threshold. Kew lists Rhamnus lycioides subsp. graeca as native to Palestine and neighboring eastern Mediterranean territories (Plants of the World Online 2026b).
This evidence is stronger than a vague Mediterranean association. Many plants are Mediterranean in a broad sense; fewer are taxonomically tied to Palestine under an accepted modern treatment. Palestine Buckthorn is therefore stronger geographically than symbolic exotics such as Euphorbia milii, and stronger materially than unarmed Rhamnaceae comparisons such as Rhamnus alaternus.
The geography does not prove first-century Jerusalem use. Native or regional presence is only the first test. It establishes that the plant belongs to the correct botanical world, not that Roman soldiers selected it.
4. Thorn Morphology and Crown Workability
The material case is the heart of the candidate assessment. Regional Palestinian plant sources describe Palestine Buckthorn as a perennial shrub reaching about three meters high, with grey bark, small leaves, and thorny tangled stems (Mahmiyat 2026).
That description matters because a Crown-of-Thorns candidate must provide usable injury-producing structure. Thorny tangled stems could plausibly be cut, bent, bundled, or pressed into a rough mock crown. Such branch material is materially different from serrate leaf margins, which can scratch but do not function like woody thorns.
The limitation is equally important. The exact thorn geometry of Palestine Buckthorn is not as well documented in accessible peer-reviewed species-level literature as the paired thorn systems of Ziziphus spina-christi or Paliurus spina-christi. Its material case is therefore moderate-to-strong rather than leading. It is physically plausible, but the published evidence does not let it outrank the best-documented thorn candidates.
The workability verdict is restrained:
Palestine Buckthorn has credible thorn-material plausibility because it is a thorny, tangled southern Levant shrub. It remains below candidates with stronger published thorn architecture and stronger Christian tradition.
5. Gospel Wording and Historical Limits
The Gospel accounts describe soldiers making a crown from thorns and placing it on Jesus during the mock coronation. They do not name the plant species. This silence is decisive for method. Palestine Buckthorn is compatible with the broad textual category of thorn material, but it is not proven by the text.
The species case must therefore be made from historical botany. The relevant questions are whether the plant belonged to the southern Levant flora, whether it had thorn-bearing branch material, whether that material could plausibly be shaped into a crude crown, and whether any tradition or ancient identification strengthens the case.
Palestine Buckthorn passes the botanical plausibility tests. It fails the direct-identification test because no ancient source names it as the Crown plant.
6. Christian Tradition and Shroud Evidence
Palestine Buckthorn’s weakest category is Christian tradition. It lacks the strong pilgrimage memory associated with Ziziphus spina-christi. It lacks the explicit Christ-thorn scientific name of Paliurus spina-christi. It has no major continuous devotional tradition identifying it as the Crown material.
It should also remain separate from Shroud-based arguments. The major Shroud-botany discussions focus on other taxa, especially Gundelia tournefortii and Ziziphus spina-christi. Palestine Buckthorn should not borrow that evidence. Its case rests on southern Levant botany and thorned morphology.
This absence weakens the traditional case but does not erase the botanical case. Since the Gospels do not name the plant, legitimate candidates must be judged through circumstantial historical botany.
7. Comparative Crown Flora Placement
Palestine Buckthorn belongs among the stronger secondary candidates.
Ziziphus spina-christi remains stronger because it combines Holy Land presence, Rhamnaceae placement, woody paired thorns, older naming history, and Christian memory.
Paliurus spina-christi remains stronger in explicit Christ-thorn naming and thorn architecture.
Sarcopoterium spinosum remains strong as practical local spiny shrub material, though it belongs outside Rhamnaceae.
Gundelia tournefortii remains important as a Shroud-associated spiny-mass candidate, while retaining the necessary caution that it lacks uncontested physical proof from the Shroud itself.
Rhamnus alaternus is weaker as Crown material because its ordinary morphology is unarmed.
Palestine Buckthorn’s distinct place is clear: it is a thorn-bearing Rhamnus of the southern Levant. That combination is strong enough to require serious Crown Flora treatment.
8. Crown Flora Verdict
Palestine Buckthorn is a serious Rhamnion-alliance Crown-of-Thorns candidate. Its strongest evidence is botanical: Rhamnaceae placement, Palestine-linked synonymy, accepted native presence in Palestine under Rhamnus lycioidessubsp. graeca, and regional description as a thorny, tangled shrub. Its material profile is strong enough for serious consideration because thorned tangled stems could plausibly supply rough crown-making material.
Its weaknesses are equally clear. No ancient source names it as the Crown plant. It lacks major Christian pilgrimage memory. Its thorn geometry is not documented with the same force as Ziziphus spina-christi or Paliurus spina-christi. It should therefore be treated as a strong secondary candidate rather than a leading traditional identification.
Final Crown Flora classification:
Strong Rhamnion-alliance candidate; strong southern Levant botanical candidate; moderate-to-strong thorn-material candidate; weak traditional Crown-of-Thorns candidate.
Evidence Summary
Accepted taxonomy: Rhamnus lycioides subsp. graeca is the accepted name; Rhamnus palaestina Boiss. is treated as a synonym by Kew and World Flora Online (Plants of the World Online 2026a; World Flora Online 2026).
Family placement: The plant belongs to Rhamnaceae, the family that includes major Crown Flora candidates such as Ziziphus spina-christi and Paliurus spina-christi.
Southern Levant relevance: Kew lists the accepted subspecies as native to Palestine and neighboring eastern Mediterranean territories (Plants of the World Online 2026b).
Morphology: Regional Palestinian plant sources describe Palestine Buckthorn as a shrub up to about three meters high, with thorny and tangled stems (Mahmiyat 2026).
Regional thorn ecology: Peer-reviewed work on the Israeli flora records 294 spiny, thorny, and prickly wild plant species, supporting the ecological normality of thorn-bearing plants in the region (Ronel and Lev-Yadun 2012).
Textual evidence: The Gospels describe a crown made from thorns but do not identify the plant species. Palestine Buckthorn is compatible with the broad textual category, while remaining unproven by the text.
Christian tradition: Weak. No secure ancient or continuous Christian source identifies Palestine Buckthorn as the Crown of Thorns plant.
Overall strength: Strong secondary candidate: serious within the Rhamnion alliance, below the leading traditional candidates, above unarmed or exotic symbolic plants.
References
Mahmiyat. 2026. “Palestine Buckthorn.” Plants of Palestine. https://www.mahmiyat.ps/en/flora-and-fauna/290.html
Plants of the World Online. 2026a. “Rhamnus palaestina Boiss.” Royal Botanic Gardens, Kew. https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:718538-1
Plants of the World Online. 2026b. “Rhamnus lycioides subsp. graeca (Boiss. & Reut.) Tutin.” Royal Botanic Gardens, Kew. https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:60453535-2
Ronel, M., and S. Lev-Yadun. 2012. “The Spiny, Thorny and Prickly Plants in the Flora of Israel.” Botanical Journal of the Linnean Society 168(3): 344–352. https://doi.org/10.1111/j.1095-8339.2011.01211.x
World Flora Online. 2026. “Rhamnus palaestina Boiss.” World Flora Online. https://www.worldfloraonline.org/taxon/wfo-0000460300