Indigofera asantasanensis

Taxonomy
Scientific Name
Indigofera asantasanensis Schrire & V.R.Clark
Higher Classification
Dicotyledons
Family
FABACEAE
National Status
Status and Criteria
Vulnerable D2
Assessment Date
2019/11/09
Assessor(s)
V.R. Clark & D. Raimondo
Justification
Indigofera asantasanensis is a range-restricted species, with an extent of occurrence (EOO) of 20 km² and an area of occupancy (AOO) of 12 km². It occurs at two locations where it is potentially threatened by invasive alien grasses and climate change.
Distribution
Endemism
South African endemic
Provincial distribution
Eastern Cape
Range
This species is confined to the summit plateau of the Toorberg-Koudeveld-Meelberg in the western Sneeuberg, between 1700-2150m.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Karoo Escarpment Grassland
Description
It is found exclusively on the dolerite-derived loamy-clays and black turf soils on mountain plateaux in Karoo Escarpment Grassland.
Threats
This species' habitat is currently used for game farming, which appears to pose no apparent threat to the population. Local infestations of alien invasive grasses on neighbouring properties could potentially outcompete the localized population of this species, should it spread into its habitat. As it is a high-altitude habitat specialist, it is also potentially threatened by climate change.
Population

Subpopulations are large. The population is not suspected to be declining.


Population trend
Stable
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Indigofera asantasanensis Schrire & V.R.ClarkVU D22017.1
Bibliography

Clark, V.R., Schrire, B.D. and Barker, N.P. 2015. Two new species of Indigofera L. (Leguminosae) from the Sneeuberg Centre of Floristic Endemism, Great Escarpment (Eastern and Western Cape, South Africa). PhytoKeys 48:29-41.


Citation
Clark, V.R. & Raimondo, D. 2019. Indigofera asantasanensis Schrire & V.R.Clark. 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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