Lachenalia congesta

Taxonomy
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
A range-restricted endemic to the Roggeveld Escarpment (EOO 1633 km²), and known from nine locations. It is declining due to ongoing habitat loss and degradation.
Distribution
Endemism
South African endemic
Provincial distribution
Northern Cape
Range
Roggeveld Escarpment, from west of Middelpos to Sutherland and Komsberg.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Roggeveld Shale Renosterveld, Roggeveld Karoo, Nieuwoudtville-Roggeveld Dolerite Renosterveld
Description
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
Population trend
Decreasing
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Lachenalia congesta W.F.BarkerRare Raimondo et al. (2009)
Lachenalia congesta W.F.BarkerInsufficiently 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.


Citation
Raimondo, D. 2016. Lachenalia congesta W.F.Barker. National Assessment: Red List of South African Plants version 2017.1. Accessed on 2017/10/22

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Distribution map

© D. van der Colff


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