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Scientific Name | Lachenalia congesta W.F.Barker |
Higher Classification | Monocotyledons |
Family | HYACINTHACEAE |
National Status |
Status and Criteria | Vulnerable B1ab(ii,iii)+2ab(ii,iii) |
Assessment Date | 2016/11/14 |
Assessor(s) | D. Raimondo |
Justification | Lachenalia congesta is a range-restricted endemic to the Roggeveld Escarpment. It is known from nine locations and has an extent of occurrence (EOO) of 1633 km². It is declining due to ongoing habitat loss and degradation, and is therefore listed as Vulnerable under the criteria B1ab(ii,iii)+2ab(ii,iii). |
Distribution |
Endemism | South African endemic |
Provincial distribution | Northern Cape |
Range | This species is endemic to South Africa, and is found in the Roggeveld Escarpment, from west of Middelpos to Sutherland and Komsberg. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Roggeveld Karoo, Roggeveld Shale Renosterveld, Nieuwoudtville-Roggeveld Dolerite Renosterveld |
Description | It grows on seasonally moist flats, steeply rolling east-facing mountain slopes and summit ridges in shale gravel or heavy gravelly clay. |
Threats |
| Lachenalia congesta is threatened by ongoing habitat loss and degradation. Overstocking of rangelands is causing degradation due to overgrazing and trampling. A number of subpopulations occur at sites which have been badly overgrazed. There is also ongoing habitat loss to crop cultivation, but at this stage crop cultivation is only effecting a small proportion of the population (estimated <5%). |
Population |
There is no information on the species' population.
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Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Lachenalia congesta W.F.Barker | VU B1ab(ii,iii)+2ab(ii,iii) | 2017.1 | | Lachenalia congesta W.F.Barker | Rare | Raimondo et al. (2009) | | Lachenalia congesta W.F.Barker | Insufficiently Known | Hilton-Taylor (1996) | |
Bibliography |
Duncan, G.D. 1988. Lachenalia handbook. Annals of Kirstenbosch Botanic Garden 17:1-71.
Duncan, G.D. 2012. The genus Lachenalia. Kew Publishing, Royal Botanic Gardens, Kew.
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.
Snijman, D.A. 2013. Plants of the Greater Cape Floristic Region 2: The extra Cape flora. Strelitzia 30. South African National Biodiversity Institute, Pretoria.
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Citation |
| Raimondo, D. 2016. Lachenalia congesta W.F.Barker. National Assessment: Red List of South African Plants version . Accessed on 2025/05/09 |
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