Taxonomy
Scientific Name
Barleria oxyphylla Lindau
Higher Classification
Dicotyledons
Family
ACANTHACEAE
National Status
Status and Criteria
Endangered B1ab(iii,v)
Assessment Date
2018/07/16
Assessor(s)
L. von Staden & M. Lötter
Justification
Barleria oxyphylla is a range-restricted species, with an extent of occurrence (EOO) of 3342 km². It is known from four locations in South Africa, and is threatened by ongoing habitat loss and degradation across its range in South Africa. It is also threatened outside South Africa, and therefore the national status is not adjusted following IUCN regional assessment guidelines.
Distribution
Endemism
Not endemic to South Africa
Provincial distribution
Mpumalanga
Range
This species is endemic to the Mpumalanga Lowveld and adjacent areas in Mozambique and Swaziland.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Tshokwane-Hlane Basalt Lowveld, Granite Lowveld, Zululand Lowveld
Description
It occurs in Lowveld savanna.
Threats
In South Africa this species has lost habitat to urban and agricultural expansion in the Komatipoort area between the southern boundary of the Kruger National Park and the northern border of Swaziland. It is still present in at least one location near Mananga, where it is threatened by ongoing habitat loss and degradation due to overgrazing, alien plant invasions and spreading informal settlements. The rest of the population of this species in South Africa is protected within the Kruger National Park and Manyeleti private game reserve, where it is threatened by habitat degradation due to overgrazing by game. It is also threatened by habitat loss and degradation in Swaziland and Mozambique.
Population

This species is known from only a few records, and is suspected to be rare. A continuing decline is inferred from ongoing habitat loss and degradation.


Population trend
Decreasing
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Barleria oxyphylla LindauRare Raimondo et al. (2009)
Barleria oxyphylla LindauIndeterminate Hilton-Taylor (1996)
Barleria oxyphylla LindauUncertain Hall et al. (1980)
Bibliography

Hall, A.V., De Winter, M., De Winter, B. and Van Oosterhout, S.A.M. 1980. Threatened plants of southern Africa. South African National Scienctific Programmes Report 45. CSIR, Pretoria.


Hilton-Taylor, C. 1996. Red data list of southern African plants. Strelitzia 4. South African National Botanical Institute, Pretoria.


Obermeyer, A.A. 1933. Revision of the South African species of Barleria. Annals of the Transvaal Museum 15(2):123-180.


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
von Staden, L. & Lötter, M. 2018. Barleria oxyphylla Lindau. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2020/08/11

Comment on this assessment Comment on this assessment
Distribution map

© D.R. McKenzie


Search for images of Barleria oxyphylla on iNaturalist