Taxonomy
Scientific Name
Bergeranthus addoensis L.Bolus
Higher Classification
Dicotyledons
Family
AIZOACEAE
National Status
Status and Criteria
Near Threatened B1ab(iii)+2ab(iii)
Assessment Date
2018/10/03
Assessor(s)
A.P. Dold, J.E. Victor & L. von Staden
Justification
Bergeranthus addoensis has a restricted range, with an extent of occurrence (EOO) of 2018 km², and an area of occupancy (AOO) of <2000 km². Habitat at 12 known locations is declining due to urban and industrial expansion of Port Elizabeth and Uitenhage, overgrazing and alien plant invasion.
Distribution
Endemism
South African endemic
Provincial distribution
Eastern Cape
Range
This species is endemic to the Eastern Cape, where it occurs between Port Elizabeth, Uitenhage, Kirkwood and Darlington Dam.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Sundays Valley Thicket, Motherwell Karroid Thicket, Albany Alluvial Vegetation, Grass Ridge Bontveld
Description
It is localized to open patches on deep, lime-rich sand and clay loams in mesic and xeric succulent thicket, 10-400 m.
Threats
This species is threatened by urban and industrial expansion of Port Elizabeth and Uitenhage, overgrazing and alien invasive encroachment across the rest of its range.
Population

Bergeranthus addoensis is an uncommon species, occurring in isolated subpopulations. A continuing decline is inferred from ongoing habitat loss and degradation.


Population trend
Decreasing
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Bergeranthus addoensis L.BolusVU B1ab(iii)Raimondo et al. (2009)
Bergeranthus addoensis L.BolusInsufficiently Known 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.


Citation
Dold, A.P., Victor, J.E. & von Staden, L. 2018. Bergeranthus addoensis L.Bolus. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2020/10/28

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Distribution map


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