Taxonomy
Scientific Name
Osteospermum pterigoideum Klatt
Higher Classification
Dicotyledons
Family
ASTERACEAE
Synonyms
Osteospermum decumbens Fourc., Osteospermum lancifolium Norl.
National Status
Status and Criteria
Endangered B1ab(ii,iii,v)+2ab(ii,iii,v)
Assessment Date
2007/05/28
Assessor(s)
D. Raimondo
Justification
EOO 300 km², of six historical locations, four have been lost due to afforestation and crop cultivation. There are only two possibly extant locations remaining, both are threatened by ongoing loss and degradation of habitat due to invasive alien plants.
Distribution
Endemism
South African endemic
Provincial distribution
Eastern Cape, Western Cape
Range
George and Humansdorp.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Tsitsikamma Sandstone Fynbos, South Outeniqua Sandstone Fynbos, North Outeniqua Sandstone Fynbos
Description
Low sandstone slopes.
Threats
Large areas of this species' habitat has been afforested in the past and it is estimated that at least 50% of subpopulations were lost. Around George, habitat has also been lost to crop cultivation. Remaining subpopulations continue to decline due to competition from alien invasive plants as well as ongoing habitat degradation.
Population

A rare and range-restricted species.


Population trend
Decreasing
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Osteospermum pterigoideum KlattEN B1ab(ii,iii,v)Raimondo et al. (2009)
Osteospermum pterigoideum KlattVU D2Victor (2002)
Osteospermum pterigoideum KlattInsufficiently Known Hilton-Taylor (1996)
Osteospermum pterigoideum KlattUncertain 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.


Norlindh, T. 1943. Studies in the Calenduleae. 1: Monograph of the genera Dimorphotheca, Castalis, Osteospermum, Gibbaria and Chrysanthemoides. Gleerup, Lund.


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. 2007. Osteospermum pterigoideum Klatt. National Assessment: Red List of South African Plants version . Accessed on 2025/05/21

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Distribution map


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