Schoenus riparius

Taxonomy
Scientific Name
Schoenus riparius T.L.Elliott & Muasya
Higher Classification
Monocotyledons
Family
CYPERACEAE
Synonyms
Tetraria paludosa Levyns
National Status
Status and Criteria
Critically Endangered (Possibly Extinct)
Assessment Date
2006/10/30
Assessor(s)
G.A. Verboom & D. Raimondo
Justification
This species has not been collected for over 50 years and its two recorded sites are highly transformed by urban expansion and alien plant invasion. Thorough searches are required before this species can be declared extinct. It is therefore assessed as Critically Endangered Possibly Extinct.
Distribution
Endemism
South African endemic
Provincial distribution
Western Cape
Range
This species occurs in the Cape Peninsula, in Camps Bay.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Peninsula Granite Fynbos
Description
Plants grow in marshy lower slopes below 500 m.
Threats
It is only known from the type, collected in 1945. The lower slopes and flats of Camps Bay have been extensively transformed as a result of urban development, and recent searches have failed to locate any surviving individuals. Stream sides and damp areas further up the slopes are also infested by alien invasive plants.
Population
Population trend
Unknown
Conservation
Its habitat falls within the urban edge of Cape Town and so it is not included in the Table Mountain National Park and is not conserved.
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Tetraria paludosa LevynsCritically Endangered (Possibly Extinct) Raimondo et al. (2009)
Tetraria paludosa LevynsData Deficient Victor (2002)
Tetraria paludosa LevynsIndeterminate Hilton-Taylor (1996)
Bibliography

Elliott, T.L. and Muasya, A.M. 2017. Taxonomic realignment in the southern African Tetraria (Cyperaceae, tribe Schoeneae; Schoenus clade). South African Journal of Botany 112:354-360.


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.


Helme, N.A. and Trinder-Smith, T.H. 2006. The endemic flora of the Cape Peninsula, South Africa. South African Journal of Botany 72(2):205-210.


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


Levyns, M.R. 1947. Tetraria and related genera, with special reference to the flora of the Cape Peninsula. Journal of South African Botany 13:73-93.


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.


Victor, J.E. 2002. South Africa. In: J.S. Golding (ed), Southern African plant Red Data Lists. Southern African Botanical Diversity Network Report 14 (pp. 93-120), SABONET, Pretoria.


Citation
Verboom, G.A. & Raimondo, D. 2006. Schoenus riparius T.L.Elliott & Muasya. National Assessment: Red List of South African Plants version . Accessed on 2025/05/13

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Distribution map


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