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Scientific Name | Othonna ciliata L.f. |
Higher Classification | Dicotyledons |
Family | ASTERACEAE |
National Status |
Status and Criteria | Vulnerable B1ab(iii,v) |
Assessment Date | 2018/09/27 |
Assessor(s) | L. von Staden |
Justification | Othonna ciliata has an extent of occurrence (EOO) of 5342 km². Ten severely fragmented subpopulations continue to decline due to ongoing habitat loss and degradation. Therefore, it is listed as Vulnerable under criterion B. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | This species is endemic to South Africa, and is found from Ceres to the Cape Peninsula and Sir Lowry's Pass. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Swartland Shale Renosterveld, Swartland Granite Renosterveld, Swartland Silcrete Renosterveld, Cape Winelands Shale Fynbos, Boland Granite Fynbos, Cape Flats Sand Fynbos, Atlantis Sand Fynbos, Swartland Alluvium Fynbos, Lourensford Alluvium Fynbos, Ceres Shale Renosterveld, Peninsula Granite Fynbos |
Description | It occurs in shales and sandy flats. |
Threats |
| Othonna ciliata has lost more than 75% of its habitat to urban and agricultural expansion, and habitat loss continues. Subpopulations on small remnants are threatened by competition from unmanaged alien invasive plants, overgrazing, and inappropriate fire management. |
Population |
Recent field observations indicate that this species persists at 14 locations. There are 10 subpopulations, the largest is on the Tygerberg and consists of 500-700 plants. Other subpopulations are much smaller, consisting of between 10 and 100 plants, and all are isolated, and therefore the population is considered severely fragmented. The population continues to decline due to ongoing habitat loss and degradation.
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Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Othonna ciliata L.f. | VU B1ab(ii,iii,v) | 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.
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 ciliata L.f. National Assessment: Red List of South African Plants version . Accessed on 2025/05/21 |
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