Willdenowia purpurea

Taxonomy
Scientific Name
Willdenowia purpurea Pillans
Higher Classification
Monocotyledons
Family
RESTIONACEAE
National Status
Status and Criteria
Endangered B1ab(iii,v)+2ab(iii,v)
Assessment Date
2015/12/07
Assessor(s)
H.P. Linder & L. von Staden
Justification
A range-restricted species (EOO 11 km²), known from two locations and declining due to ongoing habitat loss and degradation as well as competition from alien invasive plants.
Distribution
Endemism
South African endemic
Provincial distribution
Western Cape
Range
Lower slopes of the Franschhoek Mountains in the Theewaterskloof Valley between Viljoen's Pass and Franschhoek Pass.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Kogelberg Sandstone Fynbos
Description
Sandy flats, possibly somewhat damp in winter, at the base of the sandstone slopes, 350-600 m.
Threats
This species has declined due to habitat loss to dam construction and timber plantations at the type locality on Viljoen's Pass. It is also likely to have lost habitat to the construction of the Theewaterskloof Dam, as well as to fruit orchards in the area between Viljoen's Pass and Franschhoek Pass. Near Franschhoek Pass it is threatened by competition from spreading, unmanaged alien invasive plants.
Population

A range-restricted and localized habitat specialist.


Population trend
Decreasing
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Willdenowia purpurea PillansVU D2Raimondo et al. (2009)
Willdenowia purpurea PillansRare Hilton-Taylor (1996)
Willdenowia purpurea PillansRare 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.


Linder, H.P. 2011. The African Restionaceae: an Interactive Key identification and description system. Version 6. http://www.systbot.uzh.ch/Bestimmungsschluessel/Restionaceae_en.html. Downloaded.


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
Linder, H.P. & von Staden, L. 2015. Willdenowia purpurea Pillans. National Assessment: Red List of South African Plants version 2017.1. Accessed on 2017/03/27

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Distribution map


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