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Scientific Name | Wiborgia fusca Thunb. subsp. macrocarpa R.Dahlgren |
Higher Classification | Dicotyledons |
Family | FABACEAE |
National Status |
Status and Criteria | Endangered B1ab(ii,iii,iv,v)+2ab(ii,iii,iv,v) |
Assessment Date | 2020/09/21 |
Assessor(s) | N.A. Helme & D. Raimondo |
Justification | This subspecies is a range-restricted taxon endemic to the Western Cape Province, South Africa, with an extent of occurrence (EOO) of 354 km², and an area of occupancy of 56 km². The three to five remaining locations are declining due to coastal housing development, wheat cultivation and industrial development. It is therefore assessed as Endangered under criterion B. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | This taxon is endemic to the Western Cape Province, at Vredenburg. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Saldanha Limestone Strandveld, Saldanha Flats Strandveld, Saldanha Granite Strandveld |
Description | Plants grow in coastal fynbos, on slopes of granite koppies. |
Threats |
| Habitat loss to coastal development is the most severe ongoing threat to this subspecies, with industrial development on the outskirts of Saldanha and Langebaanweg causing further loss. Habitat loss to wheat cultivation around Vredenburg is largely a historical threat, but it resulted in a severe reduction of the available habitat. |
Population |
This taxon is known from a ±30 km range in the Vredenburg area. It is uncommon and currently known from four subpopulations. Most of the occurrence records are old, dating back to between 1905 and 1972, and are suspected to be extinct. More field surveys and population monitoring is needed to better understand this species' population trend. However population decline is inferred 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 | | Wiborgia fusca Thunb. subsp. macrocarpa R.Dahlgren | EN B1ab(ii,iii,iv,v) | Raimondo et al. (2009) | |
Bibliography |
Dahlgren, R. 1975. Studies on Wiborgia Thunb. and related species of Lebeckia Thunb. (Fabaceae). Opera Botanica 38:1-83.
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 |
| Helme, N.A. & Raimondo, D. 2020. Wiborgia fusca Thunb. subsp. macrocarpa R.Dahlgren. National Assessment: Red List of South African Plants version . Accessed on 2025/04/14 |
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