Taxonomy
Scientific Name
Bergeranthus nanus A.P.Dold & S.A.Hammer
Higher Classification
Dicotyledons
Family
AIZOACEAE
National Status
Status and Criteria
Near Threatened D2
Assessment Date
2019/10/21
Assessor(s)
A.P. Dold, D. Raimondo & L. von Staden
Justification
Bergeranthus nanus is a range-restricted species with an extent of occurrence (E00) of 1642 km². It is known from seven locations and is potentially threatened by overgrazing.
Distribution
Endemism
South African endemic
Provincial distribution
Eastern Cape
Range
This species is endemic to the eastern Great Escarpment between Graaff-Reinet and Cradock and extending to the Great Winterberg.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Upper Karoo Hardeveld, Karoo Escarpment Grassland, Amathole Mistbelt Grassland, Amathole Montane Grassland
Description
It occurs in exposed intrusive dolerite sills in nama karoo and montane grassland, 1173-1800 m.
Threats
This species is potentially threatened by livestock grazing and trampling.
Population

It was previously a poorly known species, but extensive field surveys of the mountains around Graaff-Reinet and the Great Winterberg Mountains from 2007-2012 encountered a number of previously unrecorded subpopulations. It is now know from seven distinct subpopulations. The population is not suspected to be declining, but may be impacted if grazing pressure increases.


Population trend
Stable
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Bergeranthus nanus A.P.Dold & S.A.HammerVU D2Raimondo et al. (2009)
Bergeranthus nanus A.P.Dold & S.A.HammerVulnerable Hilton-Taylor (1996)
Bibliography

Clark, V.R., Barker, N.P. and Mucina, L. 2009. The Sneeuberg: A new centre of floristic endemism on the Great Escarpment, South Africa. South African Journal of Botany 75(2):196-238.


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., Raimondo, D. & von Staden, L. 2019. Bergeranthus nanus A.P.Dold & S.A.Hammer. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2020/10/20

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Distribution map


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