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Scientific Name | Tetragonia pillansii Adamson |
Higher Classification | Dicotyledons |
Family | AIZOACEAE |
National Status |
Status and Criteria | Vulnerable B1ab(iii)+2ab(iii) |
Assessment Date | 2018/05/28 |
Assessor(s) | N.A. Helme & L. von Staden |
Justification | Tetragonia pillansii is a range-restricted species, with an extent of occurrence (EOO) of 2081 km². It is known from six to eight locations and is threatened by ongoing habitat loss and degradation due to mining at three of these. It is therefore listed as Vulnerable under criterion B. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Northern Cape, Western Cape |
Range | This species is endemic to the west coast of South Africa, from Kleinsee to Nuwerus. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Namaqualand Inland Duneveld, Namaqualand Coastal Duneveld, Namaqualand Strandveld, Namaqualand Riviere |
Description | It is found on sand flats and riverbeds near the coast. |
Threats |
| Tetragonia pillansii is threatened by ongoing habitat loss to open cast mining of coastal dunes throughout its range. |
Population |
There is no information available on the population of this species.
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Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Tetragonia pillansii Adamson | VU D2 | Raimondo et al. (2009) | |
Bibliography |
Adamson, R.S. 1955. The South African species of Aizoaceae. II. Tetragonia. Journal of South African Botany 21(3):109-149.
Hartmann, H.E.K. 2002. Illustrated handbook of succulent plants: Aizoaceae A-E. Springer, Berlin.
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.
Snijman, D.A. 2013. Plants of the Greater Cape Floristic Region 2: The extra Cape flora. Strelitzia 30. South African National Biodiversity Institute, Pretoria.
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Citation |
| Helme, N.A. & von Staden, L. 2018. Tetragonia pillansii Adamson. National Assessment: Red List of South African Plants version . Accessed on 2025/04/14 |
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