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Scientific Name | Haworthia wittebergensis W.F.Barker |
Higher Classification | Monocotyledons |
Family | ASPHODELACEAE |
National Status |
Status and Criteria | Rare |
Assessment Date | 2020/11/24 |
Assessor(s) | J.H. Vlok, D. Raimondo & L. von Staden |
Justification | Haworthia wittebergensis is a range-restricted, but locally fairly common habitat specialist that is not threatened. It has an extent of occurrence (EOO) of 305 km². It is therefore listed under the IUCN 3.1 Criteria, globally, as Least Concern but is nationally categorised as Rare. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | This species is endemic to South Africa, and is found from Witteberg Mountains to Anysberg. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Matjiesfontein Quartzite Fynbos |
Description | It grows in quartzite rock crevices in dry mountain fynbos. |
Threats |
| Haworthia wittebergensis is occasionally collected for the succulent trade - a collector was caught once with 500 plants. However, the impact of collecting is sporadic, and with this species being fairly common and most of its habitat inaccessible, collecting is not suspected to be causing severe enough declines to put this species at risk of extinction in the wild. Parts of the habitat is degraded due to overgrazing, but this seems to have little effect on the species (J.H. Vlok pers. obs.). |
Population |
A narrow endemic, but fairly common in suitable habitat (J.H. Vlok pers. obs.), much of which is poorly explored and inaccessible. It is slow growing and difficult to keep in cultivation (Bayer 1982). Plants are cryptic and the few known records are likely to be an underestimation of the number of subpopulations and locations.
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Population trend | Stable |
Notes |
| An indisputably discrete species (Bayer 1982), not easily confused with any other species of Haworthia. |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Haworthia wittebergensis W.F.Barker | Rare | 2014.1 | | Haworthia wittebergensis W.F.Barker | Least Concern | 2013.1 | | Haworthia wittebergensis W.F.Barker | Least Concern | Raimondo et al. (2009) | | Haworthia wittebergensis W.F.Barker | Rare | Hilton-Taylor (1996) | |
Bibliography |
Bayer, M.B. 1982. The new Haworthia handbook. National Botanical Gardens of South Africa.
Bayer, M.B. 1999. Haworthia Revisited: A revision of the genus. Umdaus Press, Hatfield.
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.
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Citation |
| Vlok, J.H., Raimondo, D. & von Staden, L. 2020. Haworthia wittebergensis W.F.Barker. National Assessment: Red List of South African Plants version . Accessed on 2025/04/13 |
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