Lachenalia macgregoriorum

Taxonomy
Scientific Name
Lachenalia macgregoriorum W.F.Barker
Higher Classification
Monocotyledons
Family
HYACINTHACEAE
National Status
Status and Criteria
Critically Endangered (Possibly Extinct)
Assessment Date
2015/11/18
Assessor(s)
G.D. Duncan & L. von Staden
Justification
Known from a single subpopulation, where it was last seen in 1962. It has not been relocated despite several searches, and may possibly be extinct in the wild.
Distribution
Endemism
South African endemic
Provincial distribution
Northern Cape
Range
Nieuwoudtville.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Nieuwoudtville-Roggeveld Dolerite Renosterveld
Description
Karoo shrubland on red clay soils in dolerite rock cracks.
Threats
It is not certain what caused the disappearance of the only known population, but the area has been grazed by livestock for many years, and is partially invaded by alien invasive grasses.
Population

This species was collected once, in 1962, at a well-known locality on the Bokkeveld Escarpment near Nieuwoudtville. Despite many subsequent botanical surveys of the area, as well as numerous targeted searches, it has never been seen again. Similar habitat elsewhere on the Bokkeveld Escarpment is also botanically well-explored. The population is either extinct, or requires very specific conditions to flower. Plants remain in cultivation at Kirstenbosch Botanical Garden (Duncan 2012).


Population trend
Unknown
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Lachenalia macgregoriorum W.F.BarkerVU D2Raimondo et al. (2009)
Lachenalia macgregoriorum W.F.BarkerRare 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.


Hilton-Taylor, C. Unpublished. Succulent Karoo Red Data List (version 1997 - in preparation). SANBI.


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
Duncan, G.D. & von Staden, L. 2015. Lachenalia macgregoriorum W.F.Barker. National Assessment: Red List of South African Plants version 2017.1. Accessed on 2017/09/19

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Distribution map


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