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Scientific Name | Serruria rebeloi Rourke |
Higher Classification | Dicotyledons |
Family | PROTEACEAE |
Common Names | Clandestine Spiderhead (e) |
National Status |
Status and Criteria | Endangered B1ab(ii,iii,v)+2ab(ii,iii,v) |
Assessment Date | 2020/07/06 |
Assessor(s) | A.G. Rebelo & D. Raimondo |
Justification | Serruria rebeloi is restricted to two mountain ranges in the Agulhas Plain region of South Africa where it has an extent of occurrence (EOO) of 50 km² and an area of occupancy (AOO) of 40 km². Three threat defined locations continue to decline as a result of alien plant invasions and vineyard expansion. Only a small portion of the species' known range is protected. It therefore qualifies for listing as Endangered under criterion B. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | This species is known from Akkedisberg Mountains to the Bredasdorp Mountains, in the Western Cape Province of South Africa. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Overberg Sandstone Fynbos |
Description | It occurs in seeps on gentle sandstone slopes, at 480-600 m.a.s.l. |
Threats |
| The main threat to this species is the ongoing spread of alien invasive hakeas and pines. Habitat transformation for cultivation of vineyards is also a threat and has already resulted in the loss of the subpopulation occurring on the Bredasdrop Mountains. |
Population |
Serruria rebeloi occurs over an 8 km long range on the Akkedisberg Range where around 500 individuals were recorded in 1998. The far western portion of this subpopulation occurs in Salmonsdam Nature Reserve, the majority of the subpopulation is however not protected. A second subpopulation that occurs on the Bredasdorp mountains above Napier was reduced by 20% when it was illegally bulldozed to plant vineyards. The population is suspected to be declining as a result of ongoing loss of habitat to invasive alien plant species.
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Population trend | Decreasing |
Conservation |
| A single small subpopulation has been found in the Salmonsdam Nature Reserve. |
Notes |
| An extremely cryptic, understorey protea that is easily overlooked. |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Serruria rebeloi Rourke | EN B1ac(iv)+2ac(iv) | 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.
Rourke, J.P. 1999. Proteaceae: A new species of Serruria from the southern Cape, South Africa. Bothalia 29(2):263-266.
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Citation |
| Rebelo, A.G. & Raimondo, D. 2020. Serruria rebeloi Rourke. National Assessment: Red List of South African Plants version . Accessed on 2025/07/09 |
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