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Scientific Name | Othonna rufibarbis Harv. |
Higher Classification | Dicotyledons |
Family | ASTERACEAE |
National Status |
Status and Criteria | Vulnerable B1ab(ii,iii,iv,v)+2ab(ii,iii,iv,v) |
Assessment Date | 2011/06/18 |
Assessor(s) | D. Raimondo |
Justification | A poorly known species, EOO 1 496 km², and historically recorded from four locations, two of which have gone extinct due to the development of the city of Port Elizabeth. Recently recorded from three new locations in the vicinity of Cape St. Francis, it is estimated that between five and 10 locations exist for this species. Decline due to housing development and invasive alien plants is ongoing. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Eastern Cape |
Range | Oyster Bay to Addo. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Humansdorp Shale Renosterveld, St Francis Dune Thicket |
Description | Tertiary sands in coastal habitats and in transition soils between tertiary sands and shale. |
Threats |
| This species has lost habitat and subpopulations in the past to urban development and crop cultivation. Loss of habitat as a result of coastal development is ongoing. Invasive alien plant species threaten subpopulations that occur on tertiary sands. |
Population |
Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Othonna rufibarbis Harv. | Threatened | Raimondo et al. (2009) | |
Bibliography |
Bond, P. and Goldblatt, P. 1984. Plants of the Cape flora: a descriptive catalogue. Journal of South African Botany Supp. Vol. 13:1-455.
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 |
| Raimondo, D. 2011. Othonna rufibarbis Harv. National Assessment: Red List of South African Plants version . Accessed on 2025/05/15 |
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