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Scientific Name | Astridia herrei L.Bolus |
Higher Classification | Dicotyledons |
Family | AIZOACEAE |
National Status |
Status and Criteria | Critically Endangered B1ab(iii,v) |
Assessment Date | 2015/06/10 |
Assessor(s) | P.C.V. Van Wyk & D. Raimondo |
Justification | Known only from one location (EOO 21 km²) and declining as a result of livestock overgrazing and trampling. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Northern Cape |
Range | Richtersveld, area around Cornell's Kop. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Western Gariep Hills Desert |
Description | Rocky slopes in Western Gariep Hills Desert and Richtersveld Mountain Shrubland. |
Threats |
| Severe overstocking of communally owned rangelands have led to extensive degradation of this species habitat. Overgrazing and trampling is so severe, it has led to a loss of shrub cover, on which many succulent species such as this one are dependent for shelter from hot desert conditions. Areas of exposed soil are increasingly lost to wind and water erosion, reducing the possibility for native vegetation to regenerate. |
Population |
Ongoing decline in the only known population of this species due to habitat degradation has been observed.
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Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Astridia herrei L.Bolus | CR B1ab(iii,v) | 2015.1 | | Astridia herrei L.Bolus | Rare | Raimondo et al. (2009) | | Astridia herrei L.Bolus | Insufficiently Known | Hilton-Taylor (1996) | |
Bibliography |
Glen, H.F. 1986. Numerical taxonomic studies in the subtribe Ruschiinae (Mesembryanthemaceae) - Astridia, Acrodon and Ebracteola. Bothalia 16(2):203-226.
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.
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Citation |
| Van Wyk, P.C.V. & Raimondo, D. 2015. Astridia herrei L.Bolus. National Assessment: Red List of South African Plants version . Accessed on 2025/04/14 |
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