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Scientific Name | Diosma strumosa I.Williams |
Higher Classification | Dicotyledons |
Family | RUTACEAE |
National Status |
Status and Criteria | Endangered B1ab(i,ii,iii,iv,v)+2ab(ii,iii,iv,v); C2a(i) |
Assessment Date | 2012/08/06 |
Assessor(s) | J.H. Vlok, D. Raimondo, V. Zikishe & T. Trinder-Smith |
Justification | E00 115 km², a population of fewer than 200 mature individuals at two to three locations continue to decline due to heavy grazing of livestock as well as too frequent fire. The largest subpopulation has less than 100 mature individuals in an area smaller than two hectares. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | Barrydale. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Western Little Karoo, Montagu Shale Renosterveld |
Description | Renosterveld on Bokkeveld shale. |
Threats |
| Threatened by severe overgrazing, and too frequent fire: this species is a slow growing reseeder vulnerable to depletion of its seed bank as a result of prolonged overburning. |
Population |
Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Diosma strumosa I.Williams | EN A2c; B1ab(iii); D | Raimondo et al. (2009) | | Diosma strumosa I.Williams | VU D2 | Victor (2002) | | Diosma strumosa I.Williams | Indeterminate | 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.
Vlok, J. and Schutte-Vlok, A.L. 2010. Plants of the Klein Karoo. Umdaus Press, Hatfield.
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Citation |
| Vlok, J.H., Raimondo, D., Zikishe, V. & Trinder-Smith, T. 2012. Diosma strumosa I.Williams. National Assessment: Red List of South African Plants version . Accessed on 2025/04/14 |
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