Taxonomy
Scientific Name
Ledebouria crispa S.Venter
Higher Classification
Monocotyledons
Family
HYACINTHACEAE
National Status
Status and Criteria
Endangered B1ab(iii)+2ab(iii)
Assessment Date
2008/04/02
Assessor(s)
L. von Staden & P.J.D. Winter
Justification
EOO 300 km², AOO < 300 km², two to five known locations continue to decline due to ongoing habitat loss to expanding urban and rural settlements, quarrying and overgrazing by livestock.
Distribution
Endemism
South African endemic
Provincial distribution
Limpopo
Range
Hills south and east of Polokwane.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Polokwane Plateau Bushveld
Description
Hills in Polokwane Plateau Bushveld.
Threats
This species occurs in a small area enclosed by expanding urban and rural settlements, and the area has been transformed by agriculture. However, this species is unlikely to have lost significant proportions of its habitat to agricultural expansion due to its occurrence on rocky hills unsuitable for cultivation, but the habitat is impacted by overgrazing and trampling (R. van Tonder, unpublished data). It is likely to be declining due to ongoing habitat loss to development of rural settlements. Many of the hills in this area are used for quarries. Quarrying is likely to cause continuing decline of at least one subpopulation, where hill on which it grows has already been largely destroyed (R. van Tonder unpublished data). In addition, this species is highly sought after in horticultural collections. Plants are selling for around 85 US$ on the internet (A.J. Hankey pers. comm. 2016). Illegal collection of wild plants is a very severe threat to the highly localized population.
Population

Scattered groups of 5-40 individuals (Venter & Edwards 1998). Ledebourias tend to occur in patches, and there may be many patches at the localities given above. It is, therefore, very hard to estimate the total population and surveys are needed.


Population trend
Decreasing
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Ledebouria crispa S.VenterEN B1ab(iii)Raimondo et al. (2009)
Ledebouria crispa S.VenterInsufficiently Known Hilton-Taylor (1996)
Bibliography

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.


Venter, S. and Edwards, T.J. 1998. A revision of Ledebouria (Hyacinthaceae) in South Africa. 2. Two new species, L. crispa and L. parvifolia, and L. macowanii re-instated. Bothalia 28(2):179-182.


Citation
von Staden, L. & Winter, P.J.D. 2008. Ledebouria crispa S.Venter. National Assessment: Red List of South African Plants version . Accessed on 2024/04/17

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Distribution map


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