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Scientific Name | Acrodon purpureostylus (L.Bolus) Burgoyne |
Higher Classification | Dicotyledons |
Family | AIZOACEAE |
Synonyms | Cerochlamys purpureostyla (L.Bolus) H.E.K.Hartmann, Erepsia purpureostyla (L.Bolus) Schwantes, Mesembryanthemum purpureostylum L.Bolus, Ruschia forficata L.Bolus (in part), Ruschia purpureostyla (L.Bolus) Bruyns |
National Status |
Status and Criteria | Endangered C2a(i) |
Assessment Date | 2012/12/14 |
Assessor(s) | J.H. Vlok, P.M. Burgoyne, C. Klak, D. Raimondo, N.A. Helme & L. von Staden |
Justification | A range-restricted species (EOO 711 km²) with a small population, estimated to consist of fewer than 2500 mature individuals. At least 30% of this species' habitat is already transformed, mainly for crop cultivation, and loss is continuing. Currently, 11 subpopulations are known, with five consisting of fewer than 100 mature individuals, and it is estimated that no subpopulation contains more than 250 mature individuals. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | Robertson to Potberg. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Breede Shale Renosterveld, Ruens Silcrete Renosterveld, Cape Lowland Alluvial Vegetation |
Description | Dry gravel loams, often stony slopes or flats on shale. |
Threats |
| Between Robertson, McGregor and Bonnievale, plants occur in small remaining fragments of natural vegetation after extensive loss to expanding crop fields, and habitat loss is continuing. A number of these fragments are also being degraded by heavy overgrazing due to overstocking of livestock. On the northern slopes of the Potberg, plants are threatened by habitat degradation due to overgrazing as well as competition from unmanaged invasive alien plants. |
Population |
This species is quite rare, and subpopulations are small: for five out of 11 known subpopulations fewer than 100 plants were counted, and for three others, abundance was described as uncommon, occasional or localized. It is estimated that the population consists of fewer than 2500 mature individuals and that no subpopulation has more than 250 mature individuals.
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Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Acrodon purpureostylus (L.Bolus) Burgoyne | EN B1ab(ii,iii,iv,v) | Raimondo et al. (2009) | |
Bibliography |
Burgoyne, P. 1998. Finding a place in the sun: where does Ruschia purpureostyla belong? Aloe 35(2):60-61.
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.
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 |
| Vlok, J.H., Burgoyne, P.M., Klak, C., Raimondo, D., Helme, N.A. & von Staden, L. 2012. Acrodon purpureostylus (L.Bolus) Burgoyne. National Assessment: Red List of South African Plants version . Accessed on 2025/05/17 |
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