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Scientific Name | Octopoma nanum (L.Bolus) Klak |
Higher Classification | Dicotyledons |
Family | AIZOACEAE |
Synonyms | Octopoma tanquanum Klak, Ruschia nana L.Bolus |
National Status |
Status and Criteria | Vulnerable B1ab(iv,v) |
Assessment Date | 2012/10/09 |
Assessor(s) | J.H. Vlok & L. von Staden |
Justification | EOO 4059 km², a localized habitat specialist with fewer than 10 known locations and declining due to overgrazing by livestock and game. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Northern Cape, Western Cape |
Range | Tanqua Karoo and western Little Karoo between Karoopoort, Laingsburg and Barrydale. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Western Little Karoo, Tanqua Karoo, Montagu Shale Renosterveld, Matjiesfontein Shale Renosterveld, Roggeveld Shale Renosterveld, Tanqua Wash Riviere |
Description | Flats and gentle slopes with loamy soils and sparse quartz gravel. |
Threats |
| Threatened in the past by severe overgrazing by livestock, however, many stock farms in the western Little Karoo are now being converted to game farms. Octopoma species are also browsed by game, and in cases of overstocking, subpopulations have been decimated by browsing game (J.H. Vlok, pers. obs.). |
Population |
Locally common, but restricted to a localized, specialized habitat.
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Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Ruschia nana L.Bolus | Data Deficient (Taxonomically Problematic) | 2012.1 | | Octopoma tanquanum Klak | VU B1ab(iv,v)+2ab(iv,v) | 2012.1 | | Ruschia nana L.Bolus | Data Deficient (Taxonomically Problematic) | Raimondo et al. (2009) | |
Bibliography |
Klak, C. 2010. Three new species and two new combinations in the Aizoaceae from the Western and Northern Cape of South Africa. South African Journal of Botany 76(2):299-307.
Klak, C. 2011. Aizoaceae: New combinations in Antimima and Octopoma (Ruschioideae). Bothalia 41(2):292-294.
Snijman, D.A. 2013. Plants of the Greater Cape Floristic Region 2: The extra Cape flora. Strelitzia 30. South African National Biodiversity Institute, Pretoria.
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Citation |
| Vlok, J.H. & von Staden, L. 2012. Octopoma nanum (L.Bolus) Klak. National Assessment: Red List of South African Plants version . Accessed on 2025/04/14 |
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