|
Scientific Name | Erica binaria E.G.H.Oliv. |
Higher Classification | Dicotyledons |
Family | ERICACEAE |
National Status |
Status and Criteria | Vulnerable D2 |
Assessment Date | 2018/05/29 |
Assessor(s) | L. von Staden |
Justification | Erica binaria is a highly localized habitat specialist. It is known from three locations and has an extent of occurrence (EOO) of 239 km². It is potentially threatened by competition from alien invasive plants, and is therefore listed as Vulnerable under criterion D. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | This species is endemic to the mountains of the Western Cape, South Africa, where it is known from isolated subpopulations in Jonkershoek, Simonsberg and the Riviersonderend mountains. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | North Sonderend Sandstone Fynbos, Kogelberg Sandstone Fynbos |
Description | It is localized to rocky summit ridges, 1200-1700 m. |
Threats |
| Erica binaria is potentially threatened by competition from alien invasive plants at all three locations. Dense, unmanaged infestations of escaped pine seedlings have been spreading rapidly on the slopes of Simonsberg and the southern slopes of the Riviersonderend Mountains. Scattered pines are already present in this species' habitat at the summit of Jonaskop in the Riviersonderend Mountains. The lower slopes of the Jonkershoek Valley at Stellenbosch is also under timber plantations, but thus far alien invasions have been managed. |
Population |
This highly localized endemic is currently known from three widely separated subpopulations. It is a habitat specialist of summit ridges, and may be overlooked in more inaccessible areas. The population is not suspected to be declining, but it could rapidly increase its risk of extinction if alien invasive plants are not urgently cleared.
|
Population trend | Stable |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Erica binaria E.G.H.Oliv. | VU D2 | 2020.1 | | Erica binaria E.G.H.Oliv. | Least Concern | 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.
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.
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.
|
Citation |
| von Staden, L. 2018. Erica binaria E.G.H.Oliv. National Assessment: Red List of South African Plants version . Accessed on 2025/04/14 |
Comment on this assessment
