Haworthia cooperi

Taxonomy
Scientific Name
Haworthia cooperi Baker
Higher Classification
Monocotyledons
Family
ASPHODELACEAE
National Status
Status and Criteria
Data Deficient - Taxonomically Problematic
Assessment Date
2014/03/19
Assessor(s)
L. von Staden, R.R. Klopper & J.C. Manning
Justification
A variable species that is difficult to distinguish from other Haworthia species, particularly H. cymbiformis and H. decipiens. Until taxonomically resolved, the risk of extinction of H. cooperi cannot be assessed.
Distribution
Endemism
South African endemic
Provincial distribution
Eastern Cape
Habitat and Ecology
Major system
Terrestrial
Population
Population trend
Unknown
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 cooperi BakerData Deficient (Taxonomically Problematic) 2014.1
Haworthia cooperi Baker var. doldii M.B.BayerLeast Concern Raimondo et al. (2009)
Haworthia leightonii G.G.Sm. var. davidii BreuerLeast Concern Raimondo et al. (2009)
Haworthia cooperi Baker var. gracilis (Poelln.) M.B.BayerLeast Concern Raimondo et al. (2009)
Haworthia cooperi Baker var. tenera (Poelln.) M.B.BayerLeast Concern Raimondo et al. (2009)
Haworthia cooperi Baker var. viridis (M.B.Bayer) M.B.BayerLeast Concern Raimondo et al. (2009)
Haworthia cooperi Baker var. truncata (H.Jacobsen) M.B.BayerLeast Concern Raimondo et al. (2009)
Haworthia cooperi Baker var. cooperi Least Concern Raimondo et al. (2009)
Haworthia cooperi Baker var. dielsiana (Poelln.) M.B.BayerLeast Concern Raimondo et al. (2009)
Haworthia azurea M.HayashiLeast Concern Raimondo et al. (2009)
Haworthia cooperi Baker var. venusta (C.L.Scott) M.B.BayerCR B1ab(iii,v)+2ab(iii,v)Raimondo et al. (2009)
Haworthia cooperi Baker var. isabellae (Poelln.) M.B.BayerLeast Concern Raimondo et al. (2009)
Haworthia cooperi Baker var. picturata (M.B.Bayer) M.B.BayerLeast Concern Raimondo et al. (2009)
Haworthia cooperi Baker var. gordoniana (Poelln.) M.B.BayerLeast Concern Raimondo et al. (2009)
Haworthia cooperi Baker var. pilifera (Baker) M.B.BayerLeast Concern Raimondo et al. (2009)
Haworthia leightonii G.G.Sm. var. leightonii 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.


Manning, J.C., Boatwright, J.S., Daru, B.H., Maurin, O. and Van der Bank, M. 2014. A molecular phylogeny and generic classification of Asphodelaceae subfamily Alooideae: A final resolution of the prickly issue of polyphyly in the Alooids? Systematic Botany 39(1):55-74.


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.


Citation
von Staden, L., Klopper, R.R. & Manning, J.C. 2014. Haworthia cooperi Baker. National Assessment: Red List of South African Plants version 2017.1. Accessed on 2018/11/19

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Distribution map

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