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Scientific Name | Haworthia lockwoodii Archibald |
Higher Classification | Monocotyledons |
Family | ASPHODELACEAE |
National Status |
Status and Criteria | Vulnerable A2acd; B1ab(iii,v)+2ab(iii,v) |
Assessment Date | 2022/09/15 |
Assessor(s) | J.H. Vlok & D. Raimondo |
Justification | This species has a limited distribution and has an extent of occurrence (EOO) of 632 km². It is known from between 5 and 10 locations. The population is declining as a result of collecting for the specialist succulent horticultural trade and overgrazing by livestock. A decline of over 30% of the population is suspected to have taken place over a 50 year period as a result of succulent collecting and habitat degradation. It is therefore listed as Vulnerable under criteria A and B. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | This species is endemic to the Western Cape Province, South Africa, and is found in Laingsburg. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Koedoesberge-Moordenaars Karoo, Western Little Karoo, Southern Karoo Riviere, Matjiesfontein Shale Renosterveld, Matjiesfontein Shale Fynbos |
Description | It grows in succulent karoo shrubland, on dry, north-facing slopes, usually in Witteberg quartzite. |
Threats |
| The population is declining rapidly as a result of illegal collection. In 2005, a consignment of illegally harvested plants was seized at Laingsburg and contained over 200 individuals of this species (a number greater than has been recorded in any one subpopulation). Eight plants of this species were again present in confiscations between March 2019 and December 2021, many more are likely to have been removed from the wild but not intercepted by law enforcement efforts. Much of this species' habitat is also very degraded as a result of severe livestock overgrazing. |
Population |
The population is estimated to consist of less than 10 000 individuals from seven subpopulations. It is declining due to illegal collecting and habitat degradation.
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Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Haworthia lockwoodii Archibald | EN B1ab(iii,v)+2ab(iii,v) | 2012.1 | | Haworthia lockwoodii Archibald | EN B1ab(iii,v) | Raimondo et al. (2009) | | Haworthia lockwoodii Archibald | Vulnerable | 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.
Craib, C. 1990. Some rare Haworthias in South Africa. Aloe 27:23-26.
Hilton-Taylor, C. 1996. Red data list of southern African plants. Strelitzia 4. South African National Botanical Institute, Pretoria.
Pilbeam, J.W. 1983. Haworthia and Astroloba, a collector's guide. B.T. Batsford Ltd., London.
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.
Scott, C.L. 1985. The genus Haworthia, a taxonomic revision. Aloe Books, Johannesburg.
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Citation |
| Vlok, J.H. & Raimondo, D. 2022. Haworthia lockwoodii Archibald. National Assessment: Red List of South African Plants version . Accessed on 2025/05/12 |
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