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Scientific Name | Tylecodon kritzingeri Van Jaarsv. |
Higher Classification | Dicotyledons |
Family | CRASSULACEAE |
National Status |
Status and Criteria | Vulnerable D2 |
Assessment Date | 2015/05/12 |
Assessor(s) | P.V. Bruyns, E.J. van Jaarsveld, L. von Staden & P.C.V. Van Wyk |
Justification | A rare, localized species (EOO 189 km²), known from five locations and potentially threatened by habitat degradation due to overgrazing. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Northern Cape |
Range | Central mountains of the Richtersveld. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Rosyntjieberg Succulent Shrubland, Central Richtersveld Mountain Shrubland, Stinkfonteinberge Quartzite Fynbos |
Description | Sheltered, shaded places among rocks and shrubs on middle to upper slopes. |
Threats |
| In the areas where this species occurs, grazing pressure is currently low. However, as rangelands on the plains and closer to settlements are becoming increasingly degraded, herders are starting to move into montane areas in search of better grazing for their livestock. Severe overgrazing has caused a loss of vegetation cover and a decline in species dependent on nurse-shrubs elsewhere in the Richtersveld, and could potentially have a negative impact on this species as well. |
Population |
This species is rarely recorded, but is also easily overlooked (Van Jaarsveld and Koutnik 2004). Subpopulations are small and localized.
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Population trend | Stable |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Tylecodon kritzingeri Van Jaarsv. | VU D2 | 2015.1 | | Tylecodon kritzingeri Van Jaarsv. | Rare | Raimondo et al. (2009) | | Tylecodon kritzingeri Van Jaarsv. | Rare | 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. 1985. Crassulaceae. In: O.A. Leistner (ed). Flora of southern Africa 14,1:1-244. Botanical Research Institute, Pretoria.
Van Jaarsveld, E.J. 1983. Tylecodon kritzingeri: A new Tylecodon (Crassulaceae) from the north western Cape. Journal of South African Botany 49(3):305-309.
Van Jaarsveld, E.J. 1984. Tylecodon kritzingeri. Flowering Plants of Africa 51(1):t. 2006.
Van Jaarsveld, E.J. and Koutnik, D. 2004. Cotyledon and Tylecodon. Umdaus Press, Pretoria.
Williamson, G. 1992. A new species of Tylecodon (Crassulaceae) from Namibia and a new variety from the Richtersveld in South Africa. Aloe 29(3-4):60-63.
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Citation |
| Bruyns, P.V., van Jaarsveld, E.J., von Staden, L. & Van Wyk, P.C.V. 2015. Tylecodon kritzingeri Van Jaarsv. National Assessment: Red List of South African Plants version . Accessed on 2025/05/24 |
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