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Scientific Name | Tylecodon schaeferianus (Dinter) Toelken |
Higher Classification | Dicotyledons |
Family | CRASSULACEAE |
Synonyms | Adromischus hoerleinianus (Dinter) Poelln., Adromischus hoerleinianus (Dinter) Poelln. var. schaeferi Dinter, Adromischus keilhackii Werderm., Adromischus schaeferianus (Dinter) A.Berger, Adromischus schaeferianus (Dinter) A.Berger var. keilhackii (Werderm.) Poelln., Cotyledon hoerleiniana Dinter, Cotyledon hoerleiniana Dinter var. schaeferi Dinter, Cotyledon schaeferi Dinter, Cotyledon schaeferiana Dinter, Cotyledon sinus-alexandri Poelln. |
National Status |
Status and Criteria | Vulnerable B1ab(iii,v)+2ab(iii,v) |
Assessment Date | 2015/05/13 |
Assessor(s) | L. von Staden & P.C.V. Van Wyk |
Justification | This species has a restricted range in South Africa (national EOO 1710 km²), where it continues to decline due to habitat loss to mining at five to seven known locations. |
Distribution |
Endemism | Not endemic to South Africa |
Provincial distribution | Northern Cape |
Range | Coastal areas of southern Namibia and the Richtersveld between Lüderitz and Alexander Bay. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Western Gariep Lowland Desert, Western Gariep Plains Desert |
Description | Exposed sandy or gravelly flats or shaded, south-facing rocky slopes. |
Threats |
| This species occurs on shales associated with diamond bearing gravel, and as a result, most of its habitat around Alexander Bay has been destroyed through mining or prospecting activities. Loss and degradation continues. In Namibia, this species is also confined to diamond mining areas, and is likely to also be threatened by habitat destruction. |
Population |
Subpopulations are small, this species occurs in isolated clumps of a few plants, separated by large distances (P.C.V. van Wyk pers. obs.).
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Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Tylecodon schaeferianus (Dinter) Toelken | VU B1ab(iii,v)+2ab(iii,v) | 2015.1 | | Tylecodon schaeferianus (Dinter) Toelken | Least Concern | Raimondo et al. (2009) | | Tylecodon schaeferianus (Dinter) Toelken | Not Threatened | Hilton-Taylor (1996) | | Tylecodon schaeferianus (Dinter) Toelken | Uncertain | Hall et al. (1980) | |
Bibliography |
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.
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. 1978. New taxa and new combinations in Cotyledon and allied genera. Bothalia 12(3):377-393.
Tölken, H.R. 1985. Crassulaceae. In: O.A. Leistner (ed). Flora of southern Africa 14,1:1-244. Botanical Research Institute, Pretoria.
Van Jaarsveld, E.J. and Koutnik, D. 2004. Cotyledon and Tylecodon. Umdaus Press, Pretoria.
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Citation |
| von Staden, L. & Van Wyk, P.C.V. 2015. Tylecodon schaeferianus (Dinter) Toelken. National Assessment: Red List of South African Plants version . Accessed on 2025/06/08 |
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