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Scientific Name | Mesembryanthemum expansum L. |
Higher Classification | Dicotyledons |
Family | AIZOACEAE |
Synonyms | Mesembryanthemum expansum L., not of Thunb., Pentacoilanthus expansus (L.) Rappa & Camorrone, Sceletium expansum (L.) L.Bolus, Sceletium regium L.Bolus |
National Status |
Status and Criteria | Vulnerable B1ab(ii,iii,iv,v) |
Assessment Date | 2006/04/23 |
Assessor(s) | C. Klak & D. Raimondo |
Justification | This species has an extent of occurrence (EOO) of less than 2200 km². Less than 10 locations are declining due to ongoing habitat loss to rooibos tea cultivation around Clanwilliam. It therefore qualifies as Vulnerable under criterion B. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | This species occurs from Malmesbury to Clanwilliam. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Doringrivier Quartzite Karoo, Citrusdal Vygieveld, Piketberg Sandstone Fynbos, Graafwater Sandstone Fynbos, Hawequas Sandstone Fynbos |
Description | Plants grow on arid succulent fynbos on rocky sandstone slopes. |
Threats |
| It is threatened by agriculture, particularly rooibos tea farming in the Clanwilliam area, Nardouwsberg and Pakhuispass. Wheat farming and wine farming is a threat at the Riebek Kasteel locality (Domitilla Raimondo, pers. obs. 2006). |
Population |
Population trend | Decreasing |
Conservation |
| It is not currently conserved in any formally protected area. |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Sceletium expansum (L.) L.Bolus | VU B1ab(ii,iii,iv,v) | Raimondo et al. (2009) | | Sceletium expansum (L.) L.Bolus | Not Threatened | Hilton-Taylor (1996) | | Sceletium expansum (L.) L.Bolus | Indeterminate | Hall et al. (1980) | |
Bibliography |
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.
Hall, A.V., De Winter, M., De Winter, B. and Van Oosterhout, S.A.M. 1980. Threatened plants of southern Africa. South African National Scienctific Programmes Report 45. CSIR, Pretoria.
Hilton-Taylor, C. 1996. Red data list of southern African plants. Strelitzia 4. South African National Botanical Institute, Pretoria.
Klak, C., Bruyns, P.V. and Hedderson, T.A.J. 2007. A phylogeny and new classification for Mesembryanthemoideae (Aizoaceae). Taxon 56(3):737-756.
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.
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Citation |
| Klak, C. & Raimondo, D. 2006. Mesembryanthemum expansum L. National Assessment: Red List of South African Plants version . Accessed on 2025/04/13 |
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