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Scientific Name | Diosma subulata J.C.Wendl. |
Higher Classification | Dicotyledons |
Family | RUTACEAE |
National Status |
Status and Criteria | Vulnerable B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v) |
Assessment Date | 2013/02/20 |
Assessor(s) | V. Zikishe |
Justification | E00 391 km², seven remaining locations continue to decline due to coastal development, too infrequent fire and competition from alien invasive plants. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | Hawston to Uilkraalsmond. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Overberg Dune Strandveld, Agulhas Limestone Fynbos, Elim Ferricrete Fynbos |
Description | Deep sandy soils in depressions between stabilised dunes no more than 2.5 km from the coast. |
Threats |
| The main threat to this species is ongoing habitat loss to coastal development, as well as competition from unmanaged alien invasive plants. Increasing fragmentation of its habitat also leads to exclusion of fire: this species is a reseeder that needs fire to regenerate. |
Population |
Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Diosma subulata J.C.Wendl. | VU B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v) | 2014.1 | | Diosma subulata J.C.Wendl. | Least Concern | 2013.1 | | Diosma subulata J.C.Wendl. | Least Concern | Raimondo et al. (2009) | |
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.
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.
Williams, I. 1974. Studies in the genera of the Diosmeae (Rutaceae): 4. Journal of South African Botany 40:275-290.
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.
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Citation |
| Zikishe, V. 2013. Diosma subulata J.C.Wendl. National Assessment: Red List of South African Plants version . Accessed on 2025/04/14 |
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