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Scientific Name | Diplosoma luckhoffii (L.Bolus) Schwantes ex Ihlenf. |
Higher Classification | Dicotyledons |
Family | AIZOACEAE |
Synonyms | Maughaniella luckhoffii (L.Bolus) L.Bolus |
National Status |
Status and Criteria | Near Threatened B1ab(iii,v)+2ab(iii,v) |
Assessment Date | 2018/10/03 |
Assessor(s) | C. Klak, D. Raimondo & L. von Staden |
Justification | Diplosoma luckhoffii is a range-restricted species, with an extent of occurrence (EOO) of 4027 km², and an area of occupancy (AOO) of 100 km². It is known to occur at 15-20 locations and is declining due to habitat loss and degradation, as well as succulent collecting. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Northern Cape, Western Cape |
Range | This species is localized to the Knersvlakte and southern Namaqualand coast around Kotzesrus and Lutzville. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Namaqualand Riviere, Knersvlakte Quartz Vygieveld, Southern Namaqualand Quartzite Klipkoppe Shrubland |
Description | It occurs in saline soils with a cover of quartz pebbles. |
Threats |
| This species is threatened by ongoing habitat loss to mining, succulent collecting and overgrazing. |
Population |
Plants are very cryptic, and easily overlooked. They occur in localized subpopulations in isolated quartz patches, where they can be locally abundant within a limited area. A continuing decline is inferred from ongoing habitat loss and degradation.
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Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Diplosoma luckhoffii (L.Bolus) Schwantes ex Ihlenf. | VU D2 | Raimondo et al. (2009) | | Diplosoma luckhoffii (L.Bolus) Schwantes ex Ihlenf. | Rare | Hilton-Taylor (1996) | | Maughaniella luckhoffii (L.Bolus) L.Bolus | Indeterminate | Hall et al. (1980) | |
Bibliography |
Hall, A.V., De Winter, M., De Winter, B. and Van Oosterhout, S.A.M. 1980. Threatened plants of southern Africa. South African National Scienctific Programmes Report 45. CSIR, Pretoria.
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.
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 |
| Klak, C., Raimondo, D. & von Staden, L. 2018. Diplosoma luckhoffii (L.Bolus) Schwantes ex Ihlenf. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2023/12/08 |
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