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Scientific Name | Oedera spinescens (DC.) N.G.Bergh |
Higher Classification | Dicotyledons |
Family | ASTERACEAE |
Synonyms | Nestlera dregeana Harv., Nestlera spinescens (DC.) Druce, Relhania lanata Compton, Rosenia spinescens DC. |
National Status |
Status and Criteria | Least Concern |
Assessment Date | 2019/11/08 |
Assessor(s) | D. Raimondo |
Justification | Oedera spinescens is a relatively widespread Karoo endemic with an extent of occurrence (EOO) of 37 626 km². It is known from 15 subpopulations and likely still undercollected. Some subpopulations are experiencing habitat degradation as a result of livestock overgrazing but overall decline to the population is not suspected to be severe. This species is therefore assessed as Least Concern. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | This species is endemic to South Africa, and is found from Whitehill to Murraysburg. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Western Little Karoo, Koedoesberge-Moordenaars Karoo, Upper Karoo Hardeveld, Gamka Karoo, Matjiesfontein Quartzite Fynbos, Southern Karoo Riviere, Western Gwarrieveld |
Description | It grows in stony clay flats and slopes. |
Threats |
| Some of the subpopulations of this species occur at sites where livestock overgrazing is causing habitat degradation. Many of the recent records also note that there are no threats to the vegetation where the species was collected, these sites are many in the dolerite hills or on mountain slopes. |
Population |
There is no information available on the population of this species.
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Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Rosenia spinescens DC. | Least Concern | Raimondo et al. (2009) | |
Bibliography |
Bergh, N.G., Bentley, J. and Verboom, G.A. 2018. Classification of the Relhania generic group (Asteraceae, Gnaphalieae) revisited using molecular phylogenetic analysis. Phytotaxa 344(2):101-132.
Magee, A.R. and Boatwright, J.S. (eds). In prep. Plants of the Karoo: A Conspectus of the Nama-Karoo and Adjacent Summer-Rainfall Regions of the Northern and Western Cape Provinces. Strelitzia.
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.
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Citation |
| Raimondo, D. 2019. Oedera spinescens (DC.) N.G.Bergh. National Assessment: Red List of South African Plants version . Accessed on 2025/05/19 |
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