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Scientific Name | Crassula plegmatoides Friedrich |
Higher Classification | Dicotyledons |
Family | CRASSULACEAE |
Synonyms | Crassula arta in sense of H.Jacobsen, Friedrich, Higgins, not of Schönland (misapplied name), Crassula deltoidea in sense of Schönland & Baker f., not of Thunb. (misapplied name), Crassula pseudocolumnaris Dinter |
National Status |
Status and Criteria | Vulnerable B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v) |
Assessment Date | 2015/05/15 |
Assessor(s) | D. Raimondo & L. von Staden |
Justification | A range-restricted species (EOO 1988 km²), known from seven locations in South Africa and declining across its range due to habitat loss to mining. |
Distribution |
Endemism | Not endemic to South Africa |
Provincial distribution | Northern Cape |
Range | Coastal areas of southern Namibia and the Richtersveld. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Namaqualand Coastal Duneveld, Northern Richtersveld Yellow Duneveld, Richtersveld Coastal Duneveld, Western Gariep Lowland Desert |
Description | Quartzite gravels on gentle slopes. |
Threats |
| This species is threatened by ongoing habitat loss an degradation as a result of open-cast mining across its range in South Africa and Namibia. In places such as around the Buchuberg, degradation extends far beyond the mining sites due to windblown dust from mining disturbance and exposed mine dumps covering large areas, burying this species' quartz gravel habitat in sand. East of Alexander Bay it is also threatened by trampling and degradation due to severe overstocking of livestock. |
Population |
Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Crassula plegmatoides Friedrich | VU D2 | Raimondo et al. (2009) | | Crassula plegmatoides Friedrich | Rare/Vulnerable | Hilton-Taylor (1996) | |
Bibliography |
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.
Tölken, H.R. 1977. A revision of the genus Crassula in Southern Africa. Contributions from the Bolus Herbarium 8(1&2):1-595.
Tölken, H.R. 1985. Crassulaceae. In: O.A. Leistner (ed). Flora of southern Africa 14,1:1-244. Botanical Research Institute, Pretoria.
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Citation |
| Raimondo, D. & von Staden, L. 2015. Crassula plegmatoides Friedrich. National Assessment: Red List of South African Plants version . Accessed on 2025/04/14 |
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