Taxonomy
Scientific Name
Staavia zeyheri Sond.
Higher Classification
Dicotyledons
Family
BRUNIACEAE
National Status
Status and Criteria
Critically Endangered B1ab(iii,v)+2ab(iii,v)
Assessment Date
2015/08/06
Assessor(s)
L. von Staden
Justification
A single subpopulation (EOO <1 km²) may have already disappeared due to competition from alien invasive plants.
Distribution
Endemism
South African endemic
Provincial distribution
Western Cape
Range
Riviersonderend Mountains.
Habitat and Ecology
Major system
Terrestrial
Major habitats
South Sonderend Sandstone Fynbos, Cape Lowland Alluvial Vegetation
Description
Southwest-facing, rocky sandstone slopes.
Threats
Threatened by competition from unmanaged alien invasive plants.
Population

This species is known from a single kloof in the Riviersonderend Mountains near the town of Riviersonderend. The population was monitored in the 1970s, when it was noted that the site was becoming densely infested with alien invasive pines. A search in 1995 failed to locate the population, and it has not been seen since. Searches are urgently needed to determine whether this species survives in the wild or not.


Population trend
Decreasing
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Staavia zeyheri Sond.CR DRaimondo et al. (2009)
Staavia zeyheri Sond.Endangered Hilton-Taylor (1996)
Staavia zeyheri Sond.Endangered Hall et al. (1980)
Bibliography

Goldblatt, P. and Manning, J.C. 2000. Cape Plants: A conspectus of the Cape Flora of South Africa. Strelitzia 9. National Botanical Institute, Cape Town.


Hall, A.V., De Winter, M., De Winter, B. and Van Oosterhout, S.A.M. 1980. Threatened plants of southern Africa. South African National Scienctific Programmes Report 45. CSIR, Pretoria.


Hilton-Taylor, C. 1996. Red data list of southern African plants. Strelitzia 4. South African National Botanical Institute, Pretoria.


Pillans, N.S. 1947. A revision of Bruniaceae. Journal of South African Botany 13:121-206.


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.


Sonder, W. 1861. Bruniaceae. In: W.H. Harvey and O.W. Sonder (eds). Flora Capensis II (Leguminosae to Loranthaceae):309-324. Hodges, Smith and Co., Dublin.


Citation
von Staden, L. 2015. Staavia zeyheri Sond. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2022/01/26

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Distribution map


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