Taxonomy
Scientific Name
Helictotrichon quinquesetum (Steud.) Schweick.
Higher Classification
Monocotyledons
Family
POACEAE
Synonyms
Avena quinqueseta Steud., Avenastrum quinquesetum Stapf, Trisetum steudelii Nees
National Status
Status and Criteria
Critically Endangered (Possibly Extinct)
Assessment Date
2015/11/03
Assessor(s)
N.A. Helme & D. Raimondo
Justification
Known from two collections on Table Mountain made during the 1800s, but not seen since despite numerous searches. It is likely to be extinct.
Distribution
Endemism
South African endemic
Provincial distribution
Western Cape
Range
Cape Peninsula, Table Mountain.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Peninsula Sandstone Fynbos
Description
Unknown.
Threats
Unknown.
Population
Population trend
Unknown
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Helictotrichon quinquesetum (Steud.) Schweick.Critically Endangered (Possibly Extinct) Raimondo et al. (2009)
Helictotrichon quinquesetum (Steud.) Schweick.Insufficiently Known Hilton-Taylor (1996)
Helictotrichon quinquesetum (Steud.) Schweick.Uncertain Hall et al. (1980)
Bibliography

Gibbs Russell, G.E., Watson, L., Koekemoer, M., Smook, L., Barker, N.P., Anderson, H.M. and Dallwitz, M.J. 1990. Grasses of southern Africa. Memoirs of the Botanical Survey of South Africa 58:1-437. Botanical Research Institute, Pretoria.


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.


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.


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.


Schweickerdt, H.G. 1939. A revision of the South African species of Helictotrichon, Bess. ex. Schultes. Bothalia 3:185-198.


Stapf, O. 1900. Gramineae. In: W.T. Thiselton-Dyer (ed). Flora Capensis VII (Pontederiaceae to Gramineae):310-750. L. Reeve & Co., Ltd., Ashford.


Citation
Helme, N.A. & Raimondo, D. 2015. Helictotrichon quinquesetum (Steud.) Schweick. National Assessment: Red List of South African Plants version . Accessed on 2025/05/13

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Distribution map


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