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Scientific Name | Haworthia bayeri J.D.Venter & S.A.Hammer |
Higher Classification | Monocotyledons |
Family | ASPHODELACEAE |
Synonyms | Haworthia correcta in sense of C.L.Scott, not of Poelln. (misapplied name), Haworthia hayashi M.Hayashi, Haworthia indigoa M.Hayashi, Haworthia laeta M.Hayashi, Haworthia truterorum Breuer & Marx, Haworthia willowmorensis in sense of C.L.Scott, not of Poelln. (misapplied name) |
National Status |
Status and Criteria | Endangered A2a; B1ab(ii,iii,iv,v) |
Assessment Date | 2012/08/01 |
Assessor(s) | J.H. Vlok, D.A. Kamundi & D. Raimondo |
Justification | EOO 1500 km², subpopulations are small and isolated. There has been a 50% decline in the number of individuals at all known subpopulations over the past 20 years, as a result of succulent collecting and habitat degradation from firewood extraction and livestock grazing and trampling (generation length suspected to be a minimum of 10 years). |
Distribution |
Endemism | South African endemic |
Provincial distribution | Eastern Cape, Western Cape |
Range | Oudtshoorn to Uniondale. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Eastern Little Karoo, Uniondale Shale Renosterveld, Kango Limestone Renosterveld, Muscadel Riviere |
Description | Gravel apronveld and renosterveld-spekboomveld transitions. |
Threats |
| Threatened by ongoing habitat loss and degradation, particularly as a result of ostrich farming but also due to unsustainable firewood collection. A 50% population decline has also been observed due to illegal removal of wild plants for the succulent trade over the past 20 years. |
Population |
Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Haworthia bayeri J.D.Venter & S.A.Hammer | EN A2a; B1ab(ii,iii,iv,v) | 2014.1 | | Haworthia bayeri J.D.Venter & S.A.Hammer | EN A2a; B1ab(ii,iii,iv,v) | Raimondo et al. (2009) | | Haworthia hayashi M.Hayashi | Least Concern | Raimondo et al. (2009) | |
Bibliography |
Bayer, M.B. 1999. Haworthia Revisited: A revision of the genus. Umdaus Press, Hatfield.
Bayer, M.B. and Manning, J.C. 2012 (Updated online 2013). The Haworthia nomenclator: A list of accepted species with some guidelines for infraspecific names. Haworthia Update 7(4):30-40.
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.
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 |
| Vlok, J.H., Kamundi, D.A. & Raimondo, D. 2012. Haworthia bayeri J.D.Venter & S.A.Hammer. National Assessment: Red List of South African Plants version . Accessed on 2025/05/13 |
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