Scientific Name
Euphorbia rhombifolia Boiss.
Higher Classification
Euphorbia amarifontana N.E.Br., Euphorbia bayeri L.C.Leach, Euphorbia brachiata E.Mey. ex Boiss., Euphorbia caterviflora N.E.Br., Euphorbia chersina N.E.Br., Euphorbia decussata E.Mey. ex Boiss., Euphorbia hastisquama N.E.Br., Euphorbia indecora N.E.Br., Euphorbia mundii in sense of R.A.Dyer, not of N.E.Br. (misapplied name), Euphorbia mundii N.E.Br., Euphorbia perpera N.E.Br., Euphorbia rhombifolia Boiss. var. cymosa N.E.Br., Euphorbia rhombifolia Boiss. var. laxa N.E.Br., Euphorbia rhombifolia Boiss. var. triceps N.E.Br., Euphorbia rudolfii N.E.Br.
Common Names
Bloumelkbos (a), Kirriemoer (a), Moerwortel (a), Moerworteltjie (a), Sikkiri (a), Sikkiriwortel (a), Skaapmelkbos (a), Soetmelkbos (a), Springbokmelkbos (a)
National Status
Status and Criteria
Least Concern
Assessment Date
R.H. Archer, J.H. Vlok, J.E. Victor & D. Raimondo
Euphorbia rhombifolia is widespread, common and not in danger of extinction.
Not endemic to South Africa
Provincial distribution
Eastern Cape, Free State, Northern Cape, Western Cape
This species occurs from southern Namibia to Namaqualand, Bushmanland, the Great Karoo and the Albany area of the Eastern Cape.
Habitat and Ecology
Major system
Major habitats
Matjiesfontein Shale Renosterveld, Albany Arid Thicket, Northern Nababiepsberge Mountain Desert, Southern Nababiepsberge Mountain Desert, Eastern Gariep Plains Desert, Western Gariep Plains Desert, Western Gariep Lowland Desert, Western Gariep Hills Desert, Atlantis Sand Fynbos, Boland Granite Fynbos, Graafwater Sandstone Fynbos, Hantam Plateau Dolerite Renosterveld, Richtersveld Sheet Wash Desert, Roggeveld Shale Renosterveld, Richtersberg Mountain Desert, Montagu Shale Renosterveld, Swartland Shale Renosterveld, Lambert's Bay Strandveld, Stormberg Plateau Grassland, Karoo Escarpment Grassland, Besemkaree Koppies Shrubland, Queenstown Thornveld, Tarkastad Montane Shrubland, Bedford Dry Grassland, Bushmanland Arid Grassland, Kalahari Karroid Shrubland, Bushmanland Basin Shrubland, Nieuwoudtville Shale Renosterveld, Sundays Arid Thicket, Baviaans Valley Thicket, Doubledrift Karroid Thicket, Eastern Gwarrieveld, Escarpment Arid Thicket, Escarpment Valley Thicket, Fish Arid Thicket, Fish Valley Thicket, Gamka Arid Thicket, Grahamstown Grassland Thicket, Mons Ruber Fynbos Thicket, Motherwell Karroid Thicket, Kahams Mountain Desert, Saltaire Karroid Thicket, Western Upper Karoo, Sundays Valley Thicket, Western Gwarrieveld, Willowmore Gwarrieveld, Lower Gariep Alluvial Vegetation, Upper Gariep Alluvial Vegetation, Albany Alluvial Vegetation, Namaqualand Riviere, Southern Karoo Riviere, Tanqua Wash Riviere, Muscadel Riviere, Noms Mountain Desert, Eastern Gariep Rocky Desert, Oudshoorn Karroid Thicket, Namaqualand Inland Duneveld, Tatasberg Mountain Succulent Shrubland, Richtersveld Coastal Duneveld, Riethuis-Wallekraal Quartz Vygieveld, Namaqualand Arid Grassland, Namaqualand Spinescent Grassland, Klawer Sandy Shrubland, Namaqualand Heuweltjie Strandveld, Northern Richtersveld Yellow Duneveld, Southern Richtersveld Yellow Duneveld, Richtersveld Sandy Coastal Scorpionstailveld, Richtersveld Red Duneveld, Gamka Karoo, Namaqualand Coastal Duneveld, Stinkfonteinberge Eastern Apron Shrubland, Hantam Karoo, Roggeveld Karoo, Doringrivier Quartzite Karoo, Little Karoo Quartz Vygieveld, Eastern Little Karoo, Prince Albert Succulent Karoo, Steytlerville Karoo, Swartruggens Quartzite Karoo, Agter-Sederberg Shrubland, Tanqua Escarpment Shrubland, Tanqua Karoo, Koedoesberge-Moordenaars Karoo, Namaqualand Strandveld, Central Richtersveld Mountain Shrubland, Western Little Karoo, Upper Karoo Hardeveld, Northern Upper Karoo, Eastern Upper Karoo, Northern Knersvlakte Vygieveld, Knersvlakte Quartz Vygieveld, Vanrhynsdorp Gannabosveld, Kobee Succulent Shrubland, Namaqualand Klipkoppe Shrubland, Namaqualand Shale Shrubland, Namaqualand Blomveld, Namaqualand Heuweltjieveld, Rosyntjieberg Succulent Shrubland, Kamiesberg Mountains Shrubland, Northern Richtersveld Scorpionstailveld, Kosiesberg Succulent Shrubland, Southern Richtersveld Scorpionstailveld, Southern Richtersveld Inselberg Shrubland, Anenous Plateau Shrubland, Umdaus Mountains Succulent Shrubland, Eenriet Plains Succulent Shrubland, Bushmanland Inselberg Shrubland, Aggeneys Gravel Vygieveld, Upper Annisvlakte Succulent Shrubland, Goariep Mountain Succulent Shrubland, Lekkersing Succulent Shrubland, Eastern Lower Karoo, Platbakkies Succulent Shrubland
It occurs on stony slopes and flats.
Population trend
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Euphorbia rhombifolia Boiss.Least Concern 2014.1
Euphorbia chersina N.E.Br.Least Concern Raimondo et al. (2009)
Euphorbia amarifontana N.E.Br.Least Concern Raimondo et al. (2009)
Euphorbia rudolfii N.E.Br.Data Deficient (Taxonomically Problematic) Raimondo et al. (2009)
Euphorbia rhombifolia Boiss.Least Concern Raimondo et al. (2009)
Euphorbia bayeri L.C.LeachCR A2c; B1ab(ii,iii,iv,v)+2ab(ii,iii,iv,v); C2a(ii)Raimondo et al. (2009)
Euphorbia decussata E.Mey. ex Boiss.Least Concern Raimondo et al. (2009)
Euphorbia mundii N.E.Br.Least Concern Raimondo et al. (2009)
Euphorbia brachiata E.Mey. ex Boiss.Least Concern Raimondo et al. (2009)
Euphorbia caterviflora N.E.Br.Least Concern Raimondo et al. (2009)
Euphorbia perpera N.E.Br.Least Concern Raimondo et al. (2009)
Euphorbia rudolfii N.E.Br.Insufficiently Known Hilton-Taylor (1996)
Euphorbia bayeri L.C.LeachVulnerable Hilton-Taylor (1996)

Bruyns, P.V. 2012. Nomenclature and typification of southern African species of Euphorbia. Bothalia 42(2):217-245.

Bruyns, P.V., Mapaya, R.J. and Hedderson, T. 2006. A new subgeneric classification for Euphorbia (Euphorbiaceae) in southern Africa based on ITS and psbA-trnH sequence data. Taxon 55(2):397-420.

Goldblatt, P. and Manning, J.C. 2000. Cape Plants: A conspectus of the Cape Flora of South Africa. Strelitzia 9. National Botanical Institute, Cape Town.

Hilton-Taylor, C. 1996. Red data list of southern African plants. Strelitzia 4. South African National Botanical 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.

Snijman, D.A. 2013. Plants of the Greater Cape Floristic Region 2: The extra Cape flora. Strelitzia 30. South African National Biodiversity Institute, Pretoria.

Archer, R.H., Vlok, J.H., Victor, J.E. & Raimondo, D. 2017. Euphorbia rhombifolia Boiss. National Assessment: Red List of South African Plants version . Accessed on 2024/06/14

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Distribution map

© L. von Staden

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