Schlechteranthus maximilianii

Taxonomy
Scientific Name
Schlechteranthus maximilianii Schwantes
Higher Classification
Dicotyledons
Family
AIZOACEAE
National Status
Status and Criteria
Vulnerable D2
Assessment Date
2016/10/25
Assessor(s)
L. von Staden
Justification
A localized, range-restricted species (EOO 213 km²), occurring at three to five locations, and potentially threatened by habitat loss to mining and overgrazing.
Distribution
Endemism
South African endemic
Provincial distribution
Northern Cape
Range
Southern Richtersveld, Lekkersing to Port Nolloth.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Vyftienmyl se Berge Succulent Shrubland, Lekkersing Succulent Shrubland, Central Richtersveld Mountain Shrubland
Description
Stony, quartzitic slopes, 270-400 m.
Threats
The most severe threat to plant species in the Richtersveld is widespread habitat degradation due to overstocking of communal rangelands. In many accessible areas, such as plains and lower mountain slopes close to settlements, overgrazing has caused a significant loss of species diversity and shrub cover. Succulent shrublands in the northern part of this species' range around Lekkersing is severely degraded due to overgrazing. This species is not browsed, and its preference for rocky slopes provides it some protection against the effects of trampling and erosion. A subpopulation on Vyftienmyl-se-Berg is protected from grazing. Another potential threat to this species is habitat loss to mining - at least one subpopulation has been recorded near a mining area, and could decline, should the mine expand.
Population

S. maximilianii is a highly range-restricted species, and is localized to quartz outcrops, where it is occasional to locally common.


Population trend
Stable
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Schlechteranthus maximilianii SchwantesLeast Concern Raimondo et al. (2009)
Bibliography

Klak, C. and Bruyns, P. 2016. Expansion of Schlechteranthus (Ruschioideae, Aizoaceae) to include Polymita, with a new species from Namaqualand, South Africa. South African Journal of Botany 103:70-77.


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.


Citation
von Staden, L. 2016. Schlechteranthus maximilianii Schwantes. National Assessment: Red List of South African Plants version 2017.1. Accessed on 2017/11/20

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Distribution map


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