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Scientific Name | Haworthia mutica Haw. |
Higher Classification | Monocotyledons |
Family | ASPHODELACEAE |
Synonyms | Haworthia groenewaldii Breuer, Haworthia otzenii G.G.Sm. |
National Status |
Status and Criteria | Data Deficient - Taxonomically Problematic |
Assessment Date | 2014/03/24 |
Assessor(s) | L. von Staden, R.R. Klopper & J.C. Manning |
Justification | Haworthia mutica is a variable species that is difficult to distinguish from other haworthias, particularly H. retusa, which occurs further east, as well as some forms of H. mirabilis and H. pygmaea. Until taxonomically resolved, its risk of extinction cannot be assessed. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | Bredasdorp to Heidelberg. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Fynbos |
Description | Rocky shale ridges. |
Threats |
| Agriculture, particularly wheat and fruit cultivation, as well as road construction have lead to extensive habitat loss in the past. Decline due to agricultural expansion is ongoing. |
Population |
Population trend | Decreasing |
Notes |
| Haworthia has been plagued with an overprolification of names, recognising variation over similarity, and causing much confusion (Bayer and Manning 2012). The genus needs to be revised using population-level molecular techniques in order for species concepts to be resolved (J.C. Manning pers. comm. 2014). |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Haworthia mutica Haw. | Data Deficient (Taxonomically Problematic) | 2014.1 | | Haworthia mutica Haw. var. mutica | VU A2bc; B1ab(ii,iii,iv,v) | Raimondo et al. (2009) | | Haworthia mutica Haw. var. mutica | 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.
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.
Hilton-Taylor, C. 1996. Red data list of southern African plants. Strelitzia 4. South African National Botanical Institute, Pretoria.
Manning, J.C. and Goldblatt, P. 2012. Plants of the Greater Cape Floristic Region 1: The Core Cape Flora. Strelitzia 29. South African National Biodiversity 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 |
| von Staden, L., Klopper, R.R. & Manning, J.C. 2014. Haworthia mutica Haw. National Assessment: Red List of South African Plants version . Accessed on 2025/07/15 |
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