Taxonomy
Scientific Name
Diosma haelkraalensis I.Williams
Higher Classification
Dicotyledons
Family
RUTACEAE
National Status
Status and Criteria
Endangered B1ab(ii,iii,iv,v)
Assessment Date
2012/07/27
Assessor(s)
T. Trinder-Smith, D. Raimondo & V. Zikishe
Justification
EOO 1110 km², three remaining locations continue to decline due to competition from alien invasive plants.
Distribution
Endemism
South African endemic
Provincial distribution
Western Cape
Range
Pearly Beach to Hagelkraal.
Habitat and Ecology
Major system
Terrestrial
Major habitats
De Hoop Limestone Fynbos, Agulhas Limestone Fynbos, Agulhas Sand Fynbos
Description
Crevices on limestone outcrops.
Threats
This highly range-restricted species is currently threatened by competition from unmanaged alien invasive plants. One location has been earmarked as a possible site for the development of a nuclear power plant.
Population
Population trend
Decreasing
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Diosma haelkraalensis I.WilliamsEN B1ab(ii,iii,iv,v)Raimondo et al. (2009)
Diosma haelkraalensis I.WilliamsVU D2Victor (2002)
Diosma haelkraalensis I.WilliamsRare 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.


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.


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.


Williams, I. 1979. Studies in the genera of the Diosmeae (Rutaceae): 8. Journal of South African Botany 45(2):147-184.


Williams, I. 1982. Studies in the genera of the Diosmeae (Rutaceae): 14. A review of the genus Diosma L. Journal of South African Botany 48(3):329-407.


Citation
Trinder-Smith, T., Raimondo, D. & Zikishe, V. 2012. Diosma haelkraalensis I.Williams. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2023/02/02

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Distribution map

© C. Paterson-Jones

© I. Ebrahim


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