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Scientific Name | Stenostelma umbelluliferum (Schltr.) S.P.Bester & Nicholas |
Higher Classification | Dicotyledons |
Family | APOCYNACEAE |
Synonyms | Schizoglossum umbelluliferum Schltr. |
National Status |
Status and Criteria | Near Threatened B1ab(ii,iii,iv,v) |
Assessment Date | 2007/09/12 |
Assessor(s) | J.E. Victor, S.P. Bester & M.F. Pfab |
Justification | EOO 9700 km² and suspected to occur at 13 locations, declining as a result of urban expansion. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Gauteng, North West |
Range | Pretoria North and adjacent areas in North West Province. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Savanna |
Description | Deep black turf in open woodland mainly in the vicinity of drainage lines. |
Threats |
| Most of this species' habitat has been transformed due to urban expansion on the northern boundary of Pretoria, and habitat loss is ongoing. In North West province, habitat loss is also ongoing due to expanding open-cast mining of platinum and chrome, as well as crop cultivation: this species' habitat is very fertile and highly sought after agricultural land. |
Population |
Stenostelma umbelluliferum is a very cryptic species, and was not recorded for more than a century before it was rediscovered in 2003. Initially it was thought to be very rare, however, field surveys located many large subpopulations that were previously overlooked. It also appears that the species is favoured by disturbance, as repeated surveys in frequently disturbed areas recorded marked increases in the number of mature individuals after disturbance events.
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Population trend | Decreasing |
Conservation |
| No recorded from any formally protected areas. |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Stenostelma umbelluliferum (Schltr.) S.P.Bester & Nicholas | NT B1ab(ii,iii,iv,v) | Raimondo et al. (2009) | |
Bibliography |
Brown, N.E. 1909. Asclepiadeae. In: W.T. Thiselton-Dyer (ed). Flora Capensis IV Section I (Vacciniaceae to Gentianeae):518-1036. Lovell Reeve & Co., Ltd., London.
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.
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Citation |
| Victor, J.E., Bester, S.P. & Pfab, M.F. 2007. Stenostelma umbelluliferum (Schltr.) S.P.Bester & Nicholas. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2022/05/19 |
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