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Scientific Name | Psoralea alata (Thunb.) T.M.Salter |
Higher Classification | Dicotyledons |
Family | FABACEAE |
Synonyms | Hallia alata Thunb. |
National Status |
Status and Criteria | Vulnerable B1ab(ii,iii,iv,v) |
Assessment Date | 2012/05/14 |
Assessor(s) | L. von Staden & N.A. Helme |
Justification | A widespread (EOO 10 566 km²), but localized wetland habitat specialist that has declined due to extensive habitat loss and fragmentation as a result of urban development and agricultural expansion. An estimated 10-15 severely fragmented subpopulations remain, and this species continues to decline due to ongoing habitat loss and degradation and competition from unmanaged alien invasive plants. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Northern Cape, Western Cape |
Range | Nieuwoudtville to the Cape Peninsula. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Swartland Shale Renosterveld, Citrusdal Shale Renosterveld, Peninsula Shale Renosterveld, Vanrhynsdorp Shale Renosterveld, Swartland Granite Renosterveld, Cape Winelands Shale Fynbos, Peninsula Granite Fynbos, Boland Granite Fynbos, Hangklip Sand Fynbos, Cape Flats Sand Fynbos, Lourensford Alluvium Fynbos, Swartland Alluvium Fynbos, Breede Alluvium Fynbos, Kouebokkeveld Alluvium Fynbos |
Description | Seasonally damp clay soils on lowlands and flats. |
Threats |
| Threatened by extensive habitat loss to urban expansion and crop cultivation in the past: very little of this species' natural habitat remains. Surviving subpopulations are confined to small fragments where they are threatened by ongoing habitat loss, competition from alien invasive plants, degradation due to inappropriate fire management, pollution and disturbance of natural water dynamics of seasonal wetlands. |
Population |
Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Psoralea alata (Thunb.) T.M.Salter | Least Concern | 2011.1 | | Psoralea alata (Thunb.) T.M.Salter | Least Concern | 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.
Harvey, W.H. 1861. Leguminosae. In: W.H. Harvey and O.W. Sonder (eds). Flora Capensis II (Leguminosae to Loranthaceae):1-285. Hodges, Smith and Co., Dublin.
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 |
| von Staden, L. & Helme, N.A. 2012. Psoralea alata (Thunb.) T.M.Salter. National Assessment: Red List of South African Plants version . Accessed on 2024/10/08 |
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