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Scientific Name | Restio sabulosus Pillans |
Higher Classification | Monocotyledons |
Family | RESTIONACEAE |
Synonyms | Ischyrolepis sabulosa (Pillans) H.P.Linder |
National Status |
Status and Criteria | Endangered A2a; B1ab(ii,iii,iv,v) |
Assessment Date | 2007/04/20 |
Assessor(s) | D. Raimondo & J.E. Victor |
Justification | EOO 720 km², known from the Cape Flats and a few subpopulations on the Agulhas Plain (a 140 km disjunction). Severely threatened by dense invasive alien plant infestations at all subpopulations. More than half of historical sites have been lost since 1965 due to urban expansion (generation length 20 years). |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | Cape Peninsula and Bredasdorp. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Overberg Dune Strandveld, Cape Flats Dune Strandveld, Cape Flats Sand Fynbos |
Description | Restricted to habitats which are waterlogged in winter, often growing partially submerged in water, 5-20 m. |
Threats |
| This species has declined extensively on the Cape Flats due to habitat loss to urban expansion, with at least 50% of known subpopulations now locally extinct. Remaining subpopulations on the Cape Flats and Agulhas Plain are threatened by competition from alien invasive plants, which typically affect surface water availability in densely invaded areas. |
Population |
Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Ischyrolepis sabulosa (Pillans) H.P.Linder | EN A2a; B1ab(ii,iii,iv,v) | Raimondo et al. (2009) | | Ischyrolepis sabulosa (Pillans) H.P.Linder | Endangered | Hilton-Taylor (1996) | | Restio sabulosus Pillans | Endangered | Hall et al. (1980) | |
Bibliography |
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.
Linder, H.P. 2011. The African Restionaceae: an Interactive Key identification and description system. Version 6. http://www.systbot.uzh.ch/Bestimmungsschluessel/Restionaceae_en.html. Downloaded.
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. & Victor, J.E. 2007. Restio sabulosus Pillans. National Assessment: Red List of South African Plants version . Accessed on 2025/04/13 |
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