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Scientific Name | Euphorbia heptagona L. |
Higher Classification | Dicotyledons |
Family | EUPHORBIACEAE |
Synonyms | Anthacantha desmetiana Lem., Euphorbia atrispina N.E.Br., Euphorbia atrispina N.E.Br. var. viridis A.C.White, R.A.Dyer & B.Sloane, Euphorbia enopla Boiss., Euphorbia enopla Boiss. var. viridis A.C.White, R.A.Dyer & B.Sloane, Euphorbia enopla in sense of A.Berger var. dentata A.Berger, not of Boiss. (misapplied name), Euphorbia enopla in sense of A.Berger, not of Boiss. (misapplied name), Euphorbia heptagona L. var. dentata (A.Berger) N.E.Br., Euphorbia heptagona L. var. fulvispina A.Berger, Euphorbia heptagona L. var. ramosa A.C.White, R.A.Dyer & B.Sloane, Euphorbia heptagona L. var. subsessilis A.C.White, R.A.Dyer & B.Sloane, Euphorbia heptagona L. var. viridis A.C.White, R.A.Dyer & B.Sloane, Euphorbia morinii A.Berger |
Common Names | Boknoors (a), Klipnoors (a) |
National Status |
Status and Criteria | Least Concern |
Assessment Date | 2020/11/25 |
Assessor(s) | R.H. Archer, J.E. Victor & L. von Staden |
Justification | Euphorbia heptagona is widespread with an extent of occurrence (EOO) of 43 436 km². It is not in danger of extinction, and is therefore listed as Least Concern. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Eastern Cape, Western Cape |
Range | This species is endemic to South Africa, and is found from Touwsrivier to Montagu and Jansenville. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Sundays Valley Thicket, Eastern Gwarrieveld, Escarpment Arid Thicket, Escarpment Valley Thicket, Fish Valley Thicket, Gamka Arid Thicket, Gamka Valley Thicket, Baviaans Valley Thicket, Sundays Arid Thicket, Western Little Karoo, Western Gwarrieveld, Willowmore Gwarrieveld, Southern Karoo Riviere, Eastern Little Karoo, Prince Albert Succulent Karoo, Steytlerville Karoo, Oudshoorn Karroid Thicket |
Description | It occurs on stony, north-facing slopes. |
Threats |
| Threats to Euphorbia heptagona includes habitat degradation, habitat loss, harvesting and invasive alien species. |
Population |
There is no information available on the population of this species.
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Population trend | Stable |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Euphorbia heptagona L. | Least Concern | 2014.1 | | Euphorbia atrispina N.E.Br. var. viridis A.C.White, R.A.Dyer & B.Sloane | Least Concern | Raimondo et al. (2009) | | Euphorbia enopla Boiss. var. viridis A.C.White, R.A.Dyer & B.Sloane | Least Concern | Raimondo et al. (2009) | | Euphorbia heptagona L. var. dentata (A.Berger) N.E.Br. | Least Concern | Raimondo et al. (2009) | | Euphorbia heptagona L. var. subsessilis A.C.White, R.A.Dyer & B.Sloane | Least Concern | Raimondo et al. (2009) | | Euphorbia enopla Boiss. var. enopla | Least Concern | Raimondo et al. (2009) | | Euphorbia heptagona L. var. heptagona | Least Concern | Raimondo et al. (2009) | | Euphorbia heptagona L. var. ramosa A.C.White, R.A.Dyer & B.Sloane | Least Concern | Raimondo et al. (2009) | | Euphorbia heptagona L. var. viridis A.C.White, R.A.Dyer & B.Sloane | Least Concern | Raimondo et al. (2009) | | Euphorbia atrispina N.E.Br. var. atrispina | Least Concern | Raimondo et al. (2009) | |
Bibliography |
Bruyns, P.V. 2012. Nomenclature and typification of southern African species of Euphorbia. Bothalia 42(2):217-245.
Manning, J.C. and Goldblatt, P. 2012. Plants of the Greater Cape Floristic Region 1: The Core Cape Flora. Strelitzia 29. South African National Biodiversity Institute, Pretoria.
Raimondo, D., von Staden, L., Foden, W., Victor, J.E., Helme, N.A., Turner, R.C., Kamundi, D.A. and Manyama, P.A. 2009. Red List of South African Plants. Strelitzia 25. South African National Biodiversity Institute, Pretoria.
Vlok, J. and Schutte-Vlok, A.L. 2010. Plants of the Klein Karoo. Umdaus Press, Hatfield.
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Citation |
| Archer, R.H., Victor, J.E. & von Staden, L. 2020. Euphorbia heptagona L. National Assessment: Red List of South African Plants version . Accessed on 2025/03/22 |
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