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Scientific Name | Drosanthemum crassum L.Bolus |
Higher Classification | Dicotyledons |
Family | AIZOACEAE |
National Status |
Status and Criteria | Near Threatened B1ab(i,ii,iii,iv,v) |
Assessment Date | 2015/12/14 |
Assessor(s) | L. von Staden |
Justification | EOO 8391 km², this species is still fairly common, but declining across its range due to habitat loss and overgrazing. It is estimated to occur at between 10 and 15 locations. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | Tanqua Karoo to Little Karoo. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Western Little Karoo, Tanqua Karoo, Eastern Little Karoo, Muscadel Riviere |
Description | Karroid scrub in loamy sand. |
Threats |
| Threatened by habitat loss to agricultural expansion (mainly vineyards and orchards) around Calitzdorp, Barrydale and Oudtshoorn, where loamy alluvial soils on floodplains are extensively cultivated. It is also threatened by overgrazing across its range, as most areas in the Little Karoo are affected by overgrazing. |
Population |
This species is abundant in loamy soils in Apronveld and Gannaveld. Plants are highly palatable, and its presence indicates areas where grazing is well managed (Vlok and Schutte-Vlok 2010).
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Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Drosanthemum crassum L.Bolus | NT B1ab(i,ii,iii,iv,v) | 2017.1 | | Drosanthemum crassum L.Bolus | Threatened | 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.
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.
Vlok, J. and Schutte-Vlok, A.L. 2010. Plants of the Klein Karoo. Umdaus Press, Hatfield.
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Citation |
| von Staden, L. 2015. Drosanthemum crassum L.Bolus. National Assessment: Red List of South African Plants version . Accessed on 2025/04/14 |
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