Taxonomy
Scientific Name
Lachenalia lactosa G.D.Duncan
Higher Classification
Monocotyledons
Family
HYACINTHACEAE
National Status
Status and Criteria
Vulnerable B1ab(ii,iii,iv,v)+2ab(ii,iii,iv,v)
Assessment Date
2020/03/04
Assessor(s)
G.D. Duncan, D. Raimondo & H. Mtshali
Justification
Lachenalia lactosa is a range restricted species with an extent of occurrence (EOO) of 450 km². It is known from six to seven locations, and is declining due to ongoing habitat loss and competition from alien invasive plants.
Distribution
Endemism
South African endemic
Provincial distribution
Western Cape
Range
This species is endemic to a small area in the Western Cape, where it occurs from Kleinmond and Bot River to Elim.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Elim Ferricrete Fynbos, Hangklip Sand Fynbos, Overberg Sandstone Fynbos, Kogelberg Sandstone Fynbos
Description
It occurs on sandy coastal flats or gentle slopes in fynbos.
Threats
Around Kleinmond, this species is threatened by urban expansion. Two subpopulations have been recorded on the urban edge. In the Bot River Valley, it has lost habitat to agriculture, and habitat loss continues due to development of housing estates. A subpopulation recorded in the 1960s on the road between Baardskeerdersbos and Elim is now possibly locally extinct due to habitat loss to expanding crop fields. It is also threatened by competition from alien invasive plants across its range.
Population

Plants occur singly or in small clumps, and are declining due to ongoing habitat loss and degradation.


Population trend
Decreasing
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Lachenalia lactosa G.D.DuncanEN B1ab(ii,iii,iv,v)Raimondo et al. (2009)
Bibliography

Duncan, G. 1998. Five new species of Lachenalia (Hyacinthaceae) from arid areas of Namibia and South Africa. Bothalia 28(2):131-139.


Duncan, G.D. 2012. The genus Lachenalia. Kew Publishing, Royal Botanic Gardens, Kew.


Goldblatt, P. and Manning, J.C. 2000. Cape Plants: A conspectus of the Cape Flora of South Africa. Strelitzia 9. National Botanical Institute, Cape Town.


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., Raimondo, D. & Mtshali, H. 2020. Lachenalia lactosa G.D.Duncan. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2020/10/28

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Distribution map

© I. Ebrahim

© I. Ebrahim


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