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Scientific Name | Isolepis venustula Kunth |
Higher Classification | Monocotyledons |
Family | CYPERACEAE |
Synonyms | Isolepis bicolor Nees, Scirpus venustulus (Kunth) Boeck. |
National Status |
Status and Criteria | Vulnerable B1ab(iii,v)+2ab(iii,v) |
Assessment Date | 2013/01/24 |
Assessor(s) | M. Muasya, D. Raimondo & L. von Staden |
Justification | EOO 4667 km², between five and nine locations remain. This species' specialized habitat is being impacted by coastal development and alien plant invasion, causing continuing decline of habitat quality and numbers of mature individuals. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | Yzerfontein to Hermanus. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Cape Flats Dune Strandveld, Langebaan Dune Strandveld, Peninsula Sandstone Fynbos, Peninsula Granite Fynbos, Boland Granite Fynbos, Agulhas Sand Fynbos, Hangklip Sand Fynbos, Cape Flats Sand Fynbos, Hopefield Sand Fynbos, Cape Seashore Vegetation |
Description | Edges of brackish, seasonal coastal pans. |
Threats |
| Ongoing rapid urban expansion and coastal development is threatening subpopulations across this species' range. Extant subpopulations occurring on fragments are declining as development disrupts the fresh water drainage patterns of this species' sensitive wetland habitat. Alien invasive plants are also causing further habitat degradation at the majority of remaining subpopulations. |
Population |
Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Isolepis venustula Kunth | VU B1ab(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.
Muasya, A.M. and Simpson, D.A. 2002. A monograph of the genus Isolepis R.Br. (Cyperaceae). Kew Bulletin 57(2):257-362.
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 |
| Muasya, M., Raimondo, D. & von Staden, L. 2013. Isolepis venustula Kunth. National Assessment: Red List of South African Plants version . Accessed on 2025/04/14 |
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