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Scientific Name | Erica karwyderi E.G.H.Oliv. |
Higher Classification | Dicotyledons |
Family | ERICACEAE |
National Status |
Status and Criteria | Critically Endangered A2ac; B1ab(i,iii,iv)+2ab(ii,iii,iv); C2a(ii) |
Assessment Date | 2007/02/07 |
Assessor(s) | R.C. Turner & E.G.H. Oliver |
Justification | EOO and AOO <2 km², only one location with fewer than 200 mature individuals remain. This lowland species is on the verge of extinction and continues to decline as a result of livestock grazing, agriculture, alien plant invasion, road construction and the construction of a sewerage farm in the Karwyderskraal hills. It occurred in the Elgin basin, but is now locally extinct due to vineyard and orchard cultivation. We suspect decline of 80% based on loss of habitat over the past three generations (45 years). |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | Elgin Valley and Bot River. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Elgin Shale Fynbos, Elim Ferricrete Fynbos |
Description | Granular, quartzitic sand over ferricrete or shale and ferricrete soils. |
Threats |
| Habitat loss and degradation as a result of crop cultivation, overgrazing, dense alien invasive plant infestations, road construction and infrastructure development. Total habitat loss is estimated to be at least 80% and loss is ongoing. |
Population |
Only one small subpopulation of fewer than 200 plants remain after more than 80% habitat loss, and plants continue to decline due to ongoing habitat loss and degradation.
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Population trend | Decreasing |
Conservation |
| The population occurs on privately owned land and is not conserved. |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Erica karwyderi E.G.H.Oliv. | CR A2ac; B1ab(i,iii,iv)+2ab(ii,iii,iv); C2a(ii) | Raimondo et al. (2009) | |
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.
Oliver, E.G.H. 2000. Systematics of Ericeae (Ericaceae-Ericoideae): species with indehiscent and partially indehiscent fruits. Contributions from the Bolus Herbarium 19:1-483.
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 |
| Turner, R.C. & Oliver, E.G.H. 2007. Erica karwyderi E.G.H.Oliv. National Assessment: Red List of South African Plants version . Accessed on 2025/04/14 |
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