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Scientific Name | Isoetes stephanseniae A.V.Duthie |
Higher Classification | Ferns |
Family | ISOETACEAE |
Synonyms | Isoetes capensis A.V.Duthie var. stephanseniae (A.V.Duthie) Schelpe & N.C.Anthony as 'stephansenii' |
National Status |
Status and Criteria | Critically Endangered B1ab(ii,iii,iv,v)+2ab(ii,iii,iv,v) |
Assessment Date | 2006/06/07 |
Assessor(s) | J.P. Roux & D. Raimondo |
Justification | EOO and AOO<4 km², known from two historical locations, one of which was lost to the development of Stellenbosch University. The remaining subpopulation is threatened by alien plant invasion and eutrophication from an adjacent sewerage farm. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | Stellenbosch. |
Habitat and Ecology |
Major system | Freshwater |
Major habitats | Swartland Granite Renosterveld, Boland Granite Fynbos |
Description | Vernal pools on granite. |
Threats |
| Invasive Alien Species (direct effects) |
Population |
Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Isoetes stephansiniae A.V.Duthie | CR B1ab(ii,iii,iv,v)+2ab(ii,iii,iv,v) | Raimondo et al. (2009) | | Isoetes capensis A.V.Duthie var. stephanseniae (A.V.Duthie) Schelpe & N.C.Anthony | Indeterminate | Hilton-Taylor (1996) | | Isoetes stephanseniae A.V.Duthie | Indeterminate | 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.
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 |
| Roux, J.P. & Raimondo, D. 2006. Isoetes stephanseniae A.V.Duthie. National Assessment: Red List of South African Plants version . Accessed on 2025/06/29 |
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