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Scientific Name | Agathosma bicornuta R.A.Dyer |
Higher Classification | Dicotyledons |
Family | RUTACEAE |
National Status |
Status and Criteria | Endangered A2ac; B1ab(i,ii,iii,iv,v) |
Assessment Date | 2006/01/17 |
Assessor(s) | A.P. Dold, T. Trinder-Smith & J.E. Victor |
Justification | A population reduction of at least 50% is estimated based on the local extinction of 50% of subpopulations known through historical records due to overgrazing and too frequent fire in the past 40 years (generation length 20 years). EOO <600 km², four remaining locations continue to decline due to ongoing habitat degradation as a result of overgrazing. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Eastern Cape |
Range | Grahamstown. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Saltaire Karroid Thicket, Grahamstown Grassland Thicket, Albany Bontveld |
Description | Transition between grassy fynbos (on Ecca quartz) and Nama Karoo (on Dwyka formation) on south-facing ridges. |
Threats |
| At least two subpopulations have been lost to severe habitat degradation as a result of overstocking of rangelands with goats and too frequent burning of rangelands. |
Population |
Plants occur in small, scattered subpopulations localized to ecotones.
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Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Agathosma bicornuta R.A.Dyer | EN A2ac; B1ab(i,ii,iii,iv,v) | Raimondo et al. (2009) | |
Bibliography |
Bolus Herbarium. The genus Agathosma, specimen data from the Bolus Herbarium Collections database. University of Cape Town, Cape Town. Downloaded on 2007.
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 |
| Dold, A.P., Trinder-Smith, T. & Victor, J.E. 2006. Agathosma bicornuta R.A.Dyer. National Assessment: Red List of South African Plants version . Accessed on 2024/09/15 |
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