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Scientific Name | Sorocephalus scabridus Meisn. |
Higher Classification | Dicotyledons |
Family | PROTEACEAE |
Common Names | Tulbagh Clusterhead (e) |
National Status |
Status and Criteria | Critically Endangered B1ac(iv) |
Assessment Date | 2019/01/30 |
Assessor(s) | A.G. Rebelo, H. Mtshali & L. von Staden |
Justification | EOO 20 km², fire related population fluctuations occur in small subpopulations at one known location. Potentially threatened by too frequent fire. Dormant subpopulations are easily overlooked in surveys. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | Olifants River and Groot Winterhoek Mountains. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Winterhoek Sandstone Fynbos |
Description | Deeper sandy flats among rocks on montane plateaus, 900-1850 m. Mature individuals are killed by fires, and only seeds survive. Seeds are relased after ripening, and dispersed by ants to their underground nests, where they are protected from predation and fire. It is pollinated by insects. |
Threats |
| Habitat degradation, Intrinsic Factors |
Population |
Population trend | Fluctuating |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Sorocephalus scabridus Meisn. | CR B1ac(iv) | Raimondo et al. (2009) | | Sorocephalus scabridus Meisn. | Vulnerable | Hilton-Taylor (1996) | | Sorocephalus scabridus Meisn. | Vulnerable | Hall et al. (1980) | |
Bibliography |
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.
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.
Rebelo, T. 2001. Sasol Proteas: A field guide to the proteas of southern Africa. (2nd ed.). Fernwood Press, Vlaeberg, Cape Town.
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Citation |
| Rebelo, A.G., Mtshali, H. & von Staden, L. 2019. Sorocephalus scabridus Meisn. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2022/05/16 |
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