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Scientific Name | Hypodiscus sulcatus Pillans |
Higher Classification | Monocotyledons |
Family | RESTIONACEAE |
National Status |
Status and Criteria | Vulnerable B1ab(iii)+2ab(iii) |
Assessment Date | 2013/01/07 |
Assessor(s) | H.P. Linder, D. Raimondo, R.C. Turner, N.A. Helme & L. von Staden |
Justification | A range-restricted species (EOO 689 km²), known from nine locations and declining due to habitat loss to crop cultivation and overgrazing. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | Bontberg Mountain northwest of Touwsrivier to the Witteberge west of Laingsburg. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Matjiesfontein Shale Renosterveld |
Description | Heavy loamy soils, with renosterbos, absent from sandstone-derived soils. |
Threats |
| This species occurs on the arid margins of the fynbos biome, and although only marginally suitable to agriculture, this species' habitat of nutrient richer clay soils are occasionally ploughed. Some locations are also subjected to overgrazing. A number of subpopulations on rocky mountain slopes are however not under any threat. |
Population |
Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Hypodiscus sulcatus Pillans | EN B1ab(ii,iii,v) | 2012.1 | | Hypodiscus sulcatus Pillans | EN B1ab(ii,iii,v) | Raimondo et al. (2009) | | Hypodiscus sulcatus Pillans | Rare | Hilton-Taylor (1996) | | Hypodiscus sulcatus Pillans | Rare | 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.
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 |
| Linder, H.P., Raimondo, D., Turner, R.C., Helme, N.A. & von Staden, L. 2013. Hypodiscus sulcatus Pillans. National Assessment: Red List of South African Plants version . Accessed on 2025/05/22 |
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