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Scientific Name | Othonna arborescens L. |
Higher Classification | Dicotyledons |
Family | ASTERACEAE |
Common Names | Bobbejaankool (a) |
National Status |
Status and Criteria | Least Concern |
Assessment Date | 2018/05/15 |
Assessor(s) | L. von Staden |
Justification | Othonna arborescens is a range-restricted, but still relatively common species, in spite of extensive historical habitat loss in the southern part of its range. It has an extent of occurrence (EOO) of 4814 km². It continues to decline, but is not yet in danger of extinction, and is therefore listed as Least Concern. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | This species is endemic to South Africa, and is found from St Helena Bay to the Cape Peninsula. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Cape Flats Dune Strandveld, Saldanha Granite Strandveld, Peninsula Granite Fynbos, Atlantis Sand Fynbos, Cape Seashore Vegetation, Langebaan Dune Strandveld, Saldanha Limestone Strandveld, Saldanha Flats Strandveld, Swartland Granite Renosterveld, Hangklip Sand Fynbos, Cape Flats Sand Fynbos, Hopefield Sand Fynbos |
Description | It occurs in coastal dunes or rocks. |
Threats |
| Othonna arborescens has lost habitat to urban expansion on the Cape Flats and Cape Peninsula in the past. It continues to be threatened by coastal development on the Vredenburg Peninsula. Subpopulations around Mamre and Atlantis are also threatened by competition from alien invasive plants. |
Population |
It is a very common species on dunes along the Cape West Coast. In spite of extensive habitat loss, a large number of recent records indicate that it still persists in at least 20 locations. Sporadic losses of individuals to development continues.
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Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Othonna arborescens L. | 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.
Harvey, W.H. 1894. Compositae. In: W.H. Harvey and O.W. Sonder (eds). Flora Capensis III (Rubiaceae to Campanulaceae):44-530. L. Reeve & Co., Ltd., Ashford.
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.
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 |
| von Staden, L. 2018. Othonna arborescens L. National Assessment: Red List of South African Plants version . Accessed on 2025/04/13 |
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