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Scientific Name | Bergeranthus albomarginatus A.P.Dold & S.A.Hammer |
Higher Classification | Dicotyledons |
Family | AIZOACEAE |
National Status |
Status and Criteria | Vulnerable D2 |
Assessment Date | 2022/09/23 |
Assessor(s) | A.P. Dold & J.E. Victor |
Justification | A highly localised Eastern Cape endemic with an area of occupancy (AOO) of 8 km². It is known from a single location where it is potentially threatened by road expansion and flooding of the river valley. The species population is not declining. It is therefore assessed as Vulnerable under criterion D. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Eastern Cape |
Range | This species is restricted in Kat river Dam, near Fort Beaufort. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Fish Valley Thicket |
Description | It grows in valley thicket on exposed intrusive dolerite sill, at 800 m.a.s.l. |
Threats |
| Road construction and river valley flooding are two potential threats to the species' two known subpopulations. The type locality is particularly near the Kat River Valley, where flooding has historically been documented to have reduced it. The expansion of a road may have an impact on the nearby subpopulation. |
Population |
This species is extremely rare, with only one subpopulation known. The population is stable and has a population size of less than 1000 mature individuals.
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Population trend | Stable |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Bergeranthus albomarginatus A.P.Dold & S.A.Hammer | VU D2 | Raimondo et al. (2009) | | Bergeranthus albomarginatus A.P.Dold & S.A.Hammer | Vulnerable | Hilton-Taylor (1996) | |
Bibliography |
Dold, A.P., Hammer, S.A. and Barker, N.P. 2005. Leaves of grass: A taxonomic revision of the genus Bergeranthus Schwantes (Aizoaceae). Haseltonia 11:78-97.
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.
Victor, J.E. and Dold, A.P. 2003. Threatened plants of the Albany Centre of Floristic Endemism, South Africa. South African Journal of Science 99:437-446.
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Citation |
| Dold, A.P. & Victor, J.E. 2022. Bergeranthus albomarginatus A.P.Dold & S.A.Hammer. National Assessment: Red List of South African Plants version . Accessed on 2025/04/13 |
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