Taxonomy
Scientific Name
Ledebouria coriacea S.Venter
Higher Classification
Monocotyledons
Family
HYACINTHACEAE
National Status
Status and Criteria
Critically Endangered B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v)
Assessment Date
2016/07/22
Assessor(s)
L. von Staden & A.J. Hankey
Justification
A single, small population numbering fewer than 500 plants continues to decline due to ongoing habitat loss.
Distribution
Endemism
South African endemic
Provincial distribution
Eastern Cape
Range
Port Elizabeth.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Grass Ridge Bontveld
Description
Alluvial sand and fine gravel underlain by calcrete. Plants occur in shaded places under Pteronia shrubs.
Threats
The only known population of this species is threatened by ongoing habitat loss to urban expansion, particularly uncontrolled expansion of informal settlements. It is also losing habitat to ongoing industrial development - the population occurs in an area earmarked for large-scale economic development.
Population

In 1989, the population consisted of five clumps within a 5 km area. The largest clump had about 158 plants, the smallest only 11 plants (Venter 1993). Since then the habitat has been significantly reduced by urban and industrial development, but there are no recent field data on the status of the population. On a visit to the type locality in 2012, two species of Ledebouria were found at the site, but neither of these could be confirmed to be L. coriacea (A.J. Hankey pers. comm. 2016).


Population trend
Decreasing
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Ledebouria coriacea S.VenterCR B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v)2017.1
Bibliography

Venter, S. 1993. A revision of the genus Ledebouria Roth (Hyacinthaceae) in South Africa. Unpublished MSc. Thesis, University of Natal, Pietermaritzburg.


Venter, S. 2008. Synopsis of the genus Ledebouria Roth (Hyacinthaceae) in South Africa. Herbertia 62:85-155.


Citation
von Staden, L. & Hankey, A.J. 2016. Ledebouria coriacea S.Venter. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2020/07/03

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Distribution map


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