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Scientific Name | Tylecodon mallei G.Will. |
Higher Classification | Dicotyledons |
Family | CRASSULACEAE |
National Status |
Status and Criteria | Vulnerable D2 |
Assessment Date | 2015/05/13 |
Assessor(s) | L. von Staden |
Justification | A rare, range-restricted habitat specialist, known from two locations and potentially threatened by habitat degradation due to overgrazing. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Northern Cape |
Range | Southern Richtersveld between Eksteenfontein and Steinkopf. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Kosiesberg Succulent Shrubland |
Description | Shaded, sheltered crevices in rocks near hill summits. |
Threats |
| This species occurs in montane areas where the 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 succulents dependent on nurse-shrubs elsewhere in the Richtersveld, and could potentially have a negative impact on this species as well. Its preference for rock crevices may offer it some protection against the effects of grazing-related degradation. |
Population |
A rare and poorly known species, with only two known collections, but also possibly overlooked.
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Population trend | Stable |
Notes |
| Van Jaarsveld and Koutnik (2004) considers this species synonymous with Tylecodon bayeri, however, Bruyns in Snijman (2013) recognises it as a distinct species. |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Tylecodon mallei G.Will. | VU D2 | 2015.1 | | Tylecodon mallei G.Will. | Least Concern | Raimondo et al. (2009) | |
Bibliography |
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.
Williamson, G. 1995. Two new Tylecodon species (Crassulaceae) from the southern Namib Desert (Namibia) and the Richtersveld (Cape Province, Republic of South Africa). Cactus and Succulent Journal (USA) 67(2):114-118.
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Citation |
| von Staden, L. 2015. Tylecodon mallei G.Will. National Assessment: Red List of South African Plants version . Accessed on 2025/04/14 |
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