Taxonomy
Scientific Name
Staavia trichotoma (Thunb.) Pillans
Higher Classification
Dicotyledons
Family
BRUNIACEAE
National Status
Status and Criteria
Data Deficient - Insufficient Information
Assessment Date
2016/11/15
Assessor(s)
L. von Staden
Justification
A rare, range-restricted and very poorly known species last recorded in the wild in 1940. It is too poorly known to assess its risk of extinction, but is possibly threatened or even extinct.
Distribution
Endemism
South African endemic
Provincial distribution
Western Cape
Range
Mountains between Villiersdorp and Genadendal.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Fynbos
Description
Sandstone slopes above 1000 m.
Threats
This species appears to be extremely rare, and it has not been recorded in the wild in more than 70 years. The population has possibly declined - Hall et al. (1980) thought that it is extinct - but the reasons for decline is not known. Montane fynbos habitat is still intact across this species' range. Possibly it may have been affected by too frequent fire.
Population

This species is known from only a few collections and was last recorded in the wild in 1940. Wildepaardeberg on the northern slopes of Jonaskop in the Riviersonderend Mountains is botanically very well explored, but there has been no recent collections. Staavia is taxonomically problematic, and it is possible that this species may be overlooked and misidentified as other species. It is also likely that subpopulations are very small, localized and easily overlooked.


Population trend
Unknown
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Staavia trichotoma (Thunb.) PillansExtinct Hall et al. (1980)
Bibliography

Claßen-Bockhoff, R., Oliver, E.G.H., Hall, A.V. and Quint, M. 2011. A new classification of the South African endemic family Bruniaceae based on molecular and morphological data. Taxon 60(4):1138-1155.


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.


Manning, J.C. and Goldblatt, P. 2012. Plants of the Greater Cape Floristic Region 1: The Core Cape Flora. Strelitzia 29. South African National Biodiversity Institute, Pretoria.


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


Citation
von Staden, L. 2016. Staavia trichotoma (Thunb.) Pillans. 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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