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Scientific Name | Pteronia tenuifolia DC. |
Higher Classification | Dicotyledons |
Family | ASTERACEAE |
Synonyms | Pteronia elegans Sch.Bip. ex Walp. |
National Status |
Status and Criteria | Endangered A2bc; B1ab(iii)+2ab(iii) |
Assessment Date | 2009/07/29 |
Assessor(s) | N.A. Helme & D. Raimondo |
Justification | Confined to lowland habitats (EOO <2000 km²). There is an extremely high probability that this species is extinct at four of the six historical locations, due to agriculture, urban expansion and alien plant invasion. Habitat loss has taken place in the past 80 years, less than three generations of this long-lived resprouter (generation length is estimated to be over 50 years). |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | Caledon, Bredasdorp and Hermanus. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Western Ruens Shale Renosterveld, Overberg Sandstone Fynbos, Elim Ferricrete Fynbos, Agulhas Sand Fynbos, Hangklip Sand Fynbos |
Description | Flats, acid sands over clays. |
Threats |
| Threats include agriculture (flowers, vines, cereals and grazing): severe past, present and future threat around Soetanysberg and Caledon; aliens at all localities (mainly Acacia cyclops); and urban expansion (especially at Kleinmond and Hermanus): past, present and future threat. Over 50% of populations have an extremely high probability of being extinct (see notes next to each locality). Transformation has taken place in the past 80 years (plants are resprouters, so three generations is over 100 years). |
Population |
Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Pteronia tenuifolia DC. | EN A2bc; B1ab(iii)+2ab(iii) | Raimondo et al. (2009) | | Pteronia tenuifolia DC. | Lower Risk - Near Threatened | Victor (2002) | | Pteronia tenuifolia DC. | Insufficiently Known | Hilton-Taylor (1996) | | Pteronia tenuifolia DC. | Uncertain | Hall et al. (1980) | |
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.
Hall, A.V., De Winter, M., De Winter, B. and Van Oosterhout, S.A.M. 1980. Threatened plants of southern Africa. South African National Scienctific Programmes Report 45. CSIR, Pretoria.
Hilton-Taylor, C. 1996. Red data list of southern African plants. Strelitzia 4. South African National Botanical 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.
Victor, J.E. 2002. South Africa. In: J.S. Golding (ed), Southern African plant Red Data Lists. Southern African Botanical Diversity Network Report 14 (pp. 93-120), SABONET, Pretoria.
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Citation |
| Helme, N.A. & Raimondo, D. 2009. Pteronia tenuifolia DC. National Assessment: Red List of South African Plants version . Accessed on 2025/04/14 |
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