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Scientific Name | Pelargonium greytonense J.J.A.van der Walt |
Higher Classification | Dicotyledons |
Family | GERANIACEAE |
National Status |
Status and Criteria | Vulnerable B1ab(iii)+2ab(iii) |
Assessment Date | 2019/03/28 |
Assessor(s) | L. von Staden |
Justification | A highly range-restricted species with an extent of occurrence (EOO) of 34 km². It is known from seven locations and is declining due to competition from alien invasive plants. It therefore qualifies as Vulnerable under criterion D. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | This species occurs in the southern slopes of the Riviersonderend Mountains. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | South Sonderend Sandstone Fynbos, Central Ruens Shale Renosterveld |
Description | Plants grow in ravines on south facing sandstone slopes. |
Threats |
| The lower southern slopes of the Riviersonderend Mountains have been converted to timber plantations, but plantations are largely confined to richer shale soils, and is thus unlikely to have significantly impacted this species. There has been no new plantations established since 1990, but escaped pine seedlings have been spreading across the southern sandstone slopes of the Riviersonderend Mountains around Greyton and Genadendal to such an extent that the lower slopes are now entirely covered in alien invasive pines, that are outcompeting native species. Towards the eastern side of the Riviersonderend Mountains invasive pines are not yet as dense, but continue to spread. |
Population |
This species was said to be common on the south-facing slopes of the Riviersonderend Mountains in the 1980s (Van der Walt 1984). There are a few recent records, and localities known through historical records need to be resurveyed. A continuing population decline is inferred from ongoing spread of alien invasive pines.
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Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Pelargonium greytonense J.J.A.van der Walt | VU B1ab(iii)+2ab(iii) | 2020.1 | | Pelargonium greytonense J.J.A.van der Walt | Least Concern | Raimondo et al. (2009) | |
Bibliography |
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.
Van der Walt, J.J.A. 1984. A new species of Pelargonium (Geraniaceae) from the south-western Cape. South African Journal of Botany 3(4):256-258.
Van der Walt, J.J.A. and Vorster, P.J. 1988. Pelargoniums of southern Africa Volume III. Annals of Kirstenbosch Botanic Garden 16:1-149. National Botanic Gardens, Kirstenbosch.
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Citation |
| von Staden, L. 2019. Pelargonium greytonense J.J.A.van der Walt. National Assessment: Red List of South African Plants version . Accessed on 2025/05/10 |
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