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Scientific Name | Oedera tricephala (DC.) N.G.Bergh |
Higher Classification | Dicotyledons |
Family | ASTERACEAE |
Synonyms | Nestlera angusta Compton, Nestlera tricephala (DC.) Harv., Polychaetia tricephala DC., Relhania tricephala (DC.) K.Bremer |
National Status |
Status and Criteria | Near Threatened B1ab(i,ii,iii,iv,v) |
Assessment Date | 2008/07/05 |
Assessor(s) | D. Raimondo, N.A. Helme & R.C. Turner |
Justification | This species has an extent of occurrence (EOO) of less than 3600 km², known from approximately 10 locations but suspected to occur at 15-20 locations. Although it is abundant at one location, Pypsteelfontein (Waboomsberg), at the other locations it has been impacted by agriculture and road construction. Agricultural expansion is causing a continuing decline and it is therefore assessed as Near Threatened under criterion B. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | It is known to occur from Ceres to Witteberg Mountains. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Ceres Shale Renosterveld |
Description | Plants grow in sandy or clay soil on flats below mountains. |
Threats |
| It is threatened by ongoing habitat loss to crop cultivation and road construction. |
Population |
Population trend | Decreasing |
Conservation |
| It is not currently conserved in any formally protected area. |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Relhania tricephala (DC.) K.Bremer | NT B1ab(i,ii,iii,iv,v) | Raimondo et al. (2009) | | Relhania tricephala (DC.) K.Bremer | Not Threatened | Hilton-Taylor (1996) | | Relhania tricephala (DC.) K.Bremer | Uncertain | 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.
Stafford, G.I., Wikkelso, M.J., Nancke, L., Jager, A.K., Moller, M. and Ronsted, N. 2016. The first phylogenetic hypothesis for the southern African endemic genus Tulbaghia (Amaryllidaceae, Allioideae) based on plastid and nuclear DNA sequences. Botanical Journal of the Linnean Society 181:156–170.
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Citation |
| Raimondo, D., Helme, N.A. & Turner, R.C. 2008. Oedera tricephala (DC.) N.G.Bergh. National Assessment: Red List of South African Plants version . Accessed on 2025/04/14 |
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