Brachystelma dimorphum subsp. gratum

Taxonomy
Scientific Name
Brachystelma dimorphum R.A.Dyer subsp. gratum R.A.Dyer
Higher Classification
Dicotyledons
Family
APOCYNACEAE
National Status
Status and Criteria
Critically Endangered B1ab(iii,v)+2ab(iii,v)
Assessment Date
2016/08/24
Assessor(s)
L. von Staden
Justification
Plants at a single known location (EOO and AOO <10 km²) are threatened by ongoing habitat loss and degradation.
Distribution
Endemism
South African endemic
Provincial distribution
Free State
Range
Welkom.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Highveld Salt Pans, Highveld Alluvial Vegetation
Description
Clay pans in open grassland.
Threats
Areas surrounding salt pans near Welkom are increasingly degraded due to urban and industrial expansion, mining, agriculture, alien invasive plants and pollution.
Population

This taxon is known from only one collection, dating from 1978. Surveys of the type locality and other similar habitat in the area are needed to relocate it in the wild, and to more accurately determine the size and status of the population.


Population trend
Decreasing
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Brachystelma dimorphum R.A.Dyer subsp. gratum R.A.DyerVU B2ab(iii)2014.1
Brachystelma dimorphum R.A.Dyer subsp. gratum R.A.DyerRare 2013.1
Brachystelma dimorphum R.A.Dyer subsp. gratum R.A.DyerRare Raimondo et al. (2009)
Brachystelma dimorphum R.A.Dyer subsp. gratum R.A.DyerVU D2Victor (2002)
Brachystelma dimorphum R.A.Dyer subsp. gratum R.A.DyerIndeterminate Hilton-Taylor (1996)
Bibliography

Dyer, R.A. 1979. ASCLEPIADACEAE: New records of Brachystelma. Bothalia 12(4):627-629.


Dyer, R.A. 1980. Brachystelma, Ceropegia and Riocreuxia. In: O.A. Leistner (ed). Flora of Southern Africa 27 Part 4:1-88. Botanical Research Institute, Pretoria.


Dyer, R.A. 1983. Ceropegia, Brachystelma and Riocreuxia in southern Africa. A.A. Balkema, Rotterdam, Netherlands.


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


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.


Victor, J.E. 2002. South Africa. In: J.S. Golding (ed), Southern African plant Red Data Lists. Southern African Botanical Diversity Network Report 14 (pp. 93-120), SABONET, Pretoria.


Citation
von Staden, L. 2016. Brachystelma dimorphum R.A.Dyer subsp. gratum R.A.Dyer. National Assessment: Red List of South African Plants version 2017.1. Accessed on 2017/03/25

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Distribution map


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