Taxonomy
Scientific Name
Othonna petiolaris DC.
Higher Classification
Dicotyledons
Family
ASTERACEAE
National Status
Status and Criteria
Near Threatened B1ab(iii)+2ab(iii)
Assessment Date
2018/10/03
Assessor(s)
D. Raimondo & L. von Staden
Justification
EOO 3195 km², AOO <1000 km², 16-20 locations continue to decline due to ongoing habitat loss.
Distribution
Endemism
South African endemic
Provincial distribution
Northern Cape, Western Cape
Range
Gifberg and northern Cederberg.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Graafwater Sandstone Fynbos, Leipoldtville Sand Fynbos, Cederberg Sandstone Fynbos, Nardouw Sandstone Fynbos, Olifants Sandstone Fynbos, Bokkeveld Sandstone Fynbos
Description
Sandy flats and gentle slopes, sometimes near boulders.
Threats
This species has lost 36% of its habitat to crop cultivation, and rapid loss continues.
Population
Population trend
Decreasing
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Othonna petiolaris DC.EN B1ab(ii,iii,iv,v)Raimondo et al. (2009)
Othonna petiolaris DC.Lower Risk - Least Concern Victor (2002)
Othonna petiolaris DC.Insufficiently Known Hilton-Taylor (1996)
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.


Harvey, W.H. 1894. Compositae. In: W.H. Harvey and O.W. Sonder (eds). Flora Capensis III (Rubiaceae to Campanulaceae):44-530. L. Reeve & Co., Ltd., Ashford.


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


Magoswana, S.L. 2017. Systematics of geophytic Othonna (Senecioneae, Othonninae). Unpublished M.Sc., University of the Western Cape, Cape Town.


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.


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
Raimondo, D. & von Staden, L. 2018. Othonna petiolaris DC. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2020/08/10

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Distribution map


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