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Scientific Name | Serruria confragosa Rourke |
Higher Classification | Dicotyledons |
Family | PROTEACEAE |
Common Names | Wavy Spiderhead (e) |
National Status |
Status and Criteria | Rare |
Assessment Date | 2020/07/07 |
Assessor(s) | A.G. Rebelo, N.A. Helme & D. Raimondo |
Justification | Serruria confragosa is a range-restricted endemic from the mountains of the Western Cape Province in South Africa, it has an extent of occurrence (EOO) of 41 km² and an area of occupancy (AOO) of 32 km². There are three subpopulations known but these are not declining as all occur in protected areas. It is is thus listed as a range restricted species and has the national category of Rare, it qualifies under the IUCN category of Least Concern. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | This species is known from Koue Bokkeveld and Groot Winterhoek Mountains in the Western Cape Province of South Africa. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Winterhoek Sandstone Fynbos |
Description | It occurs on rocky outcrops in sandstone fynbos. Mature individuals are killed by fires, and only seeds survive. Seeds are released after ripening, and dispersed by ants to their underground nests, where they are protected from predation and fire. It is pollinated by insects. |
Threats |
| No threats as the entire population falls within protected areas. |
Population |
Three subpopulations are known, one from Visgat, another one from Grasberg and the last from the ridge above Diepkloof. Subpopulations consist of clumped stands of plants numbering between 40 and 100 plants, the Grasberg and Visgat subpopulations each have over 500 plants. The size of the Diepkloof subpopulation is unknown. Subpopulations fluctuate linked to fires but fluctuations are not extreme.
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Population trend | Stable |
Conservation |
| Koue Bokkeveld Mountain Catchment Reserve. |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Serruria confragosa Rourke | EN B1ac(iv)+2ac(iv) | Raimondo et al. (2009) | | Serruria confragosa Rourke | Rare | Hilton-Taylor (1996) | |
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.
Hilton-Taylor, C. 1996. Red data list of southern African plants. Strelitzia 4. South African National Botanical Institute, Pretoria.
Manning, J.C. and Goldblatt, P. 2012. Plants of the Greater Cape Floristic Region 1: The Core Cape Flora. Strelitzia 29. South African National Biodiversity 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., Helme, N.A. & Raimondo, D. 2020. Serruria confragosa Rourke. National Assessment: Red List of South African Plants version . Accessed on 2025/04/13 |
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