Nemesia saccata

Taxonomy
Scientific Name
Nemesia saccata E.Mey. ex Benth.
Higher Classification
Dicotyledons
Family
SCROPHULARIACEAE
National Status
Status and Criteria
Vulnerable B1ab(iii,v)
Assessment Date
2015/07/06
Assessor(s)
K.E. Steiner, D. Raimondo, L. von Staden & P.C.V. Van Wyk
Justification
EOO 8304 km², plants at between five and 10 locations continue to decline due to overgrazing and habitat loss to mining.
Distribution
Endemism
South African endemic
Provincial distribution
Northern Cape
Range
Alexander Bay to Hondeklipbaai.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Namaqualand Strandveld, Southern Richtersveld Yellow Duneveld, Northern Richtersveld Yellow Duneveld, Namaqualand Sand Fynbos, Namaqualand Arid Grassland, Riethuis-Wallekraal Quartz Vygieveld, Northern Richtersveld Scorpionstailveld, Namaqualand Klipkoppe Shrubland, Alexander Bay Coastal Duneveld
Description
Sandy areas near the coast.
Threats
Threatened by severe overgrazing on the coastal plain on the Richtersveld. Nemesia species are highly palatable (J.H. Vlok pers. comm.), and this species has become very rare in the Richtersveld as a result of overgrazing, On the coast between Port Nolloth and Hondeklipbaai, open-cast mining is causing severe, ongoing habitat destruction and degradation.
Population

This species is extremely rarely seen (K.E. Steiner pers. comm.). Searches over many years in the Richtersveld have failed to locate any individuals (P.C.V. van Wyk pers. comm.). Most recent records are from the Namaqua National Park, where this species' habitat is protected, and the largest subpopulation remains. Elsewhere it is declining due to ongoing habitat loss and degradation.


Population trend
Decreasing
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Nemesia saccata E.Mey. ex Benth.VU B1ab(iii,v)2015.1
Nemesia saccata E.Mey. ex Benth.Rare Raimondo et al. (2009)
Nemesia saccata E.Mey. ex Benth.Rare Hilton-Taylor (1996)
Bibliography

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.


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
Steiner, K.E., Raimondo, D., von Staden, L. & Van Wyk, P.C.V. 2015. Nemesia saccata E.Mey. ex Benth. National Assessment: Red List of South African Plants version 2017.1. Accessed on 2019/06/19

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Distribution map


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