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Scientific Name | Trachyandra erythrorrhiza (Conrath) Oberm. |
Higher Classification | Monocotyledons |
Family | ASPHODELACEAE |
Synonyms | Anthericum erythrorrhizum Conrath |
National Status |
Status and Criteria | Least Concern |
Assessment Date | 2013/10/03 |
Assessor(s) | L. Mills & D. Raimondo |
Justification | EOO 31 999 km², there is ongoing habitat loss due to urban and agricultural expansion and alien plant invasion. However, this taxon occurs at more than 30 locations and subpopulations are not severely fragmented. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Free State, Gauteng, Mpumalanga |
Range | Johannesburg, Pretoria, Wakkerstroom and Sasolburg. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Grassland |
Description | Black turf marshes. |
Threats |
| Threatened by habitat loss and fragmentation due to urban development, crop cultivation and invasive plant species. |
Population |
In 2009 this taxon was listed as Near Threatened as it was then known from fewer than 20 locations, since 2005 as a result of intensive surveys in Gauteng, 17 new subpopulations have been found. We suspect that should similar surveys be conducted in the Free State and Mpumalanga many more subpopulations will be discovered. Subpopulation abundance data exists for 25 known populations, of these only six have low numbers of individuals (less than 100). It is likely that even small subpopulations of this species will remain viable as they have no specialist pollinator requirements. The population is not severely fragmented.
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Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Trachyandra erythrorrhiza (Conrath) Oberm. | Least Concern | 2014.1 | | Trachyandra erythrorrhiza (Conrath) Oberm. | NT B1ab(ii,iii,iv,v) | 2013.1 | | Trachyandra erythrorrhiza (Conrath) Oberm. | NT B1ab(ii,iii,iv,v) | Raimondo et al. (2009) | | Trachyandra erythrorrhiza (Conrath) Oberm. | VU A3ce+4ce; B2ab(ii,iii,iv,v); C1+2a(i); D2 | Pfab and Victor (2002) | | Trachyandra erythrorrhiza (Conrath) Oberm. | Insufficiently Known | Hilton-Taylor (1996) | |
Bibliography |
Hilton-Taylor, C. 1996. Red data list of southern African plants. Strelitzia 4. South African National Botanical Institute, Pretoria.
Obermeyer, A.A. 1962. A revision of the South African species of Anthericum, Chlorophytum and Trachyandra. Bothalia 7:669-767.
Pfab, M.F. and Victor, J.E. 2002. Threatened plants of Gauteng, South Africa. South African Journal of Botany 68:370-375.
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.
Retief, E. and Herman, P.P.J. 1997. Plants of the northern provinces of South Africa: keys and diagnostic characters. Strelitzia 6. National Botanical Institute, Pretoria.
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Citation |
| Mills, L. & Raimondo, D. 2013. Trachyandra erythrorrhiza (Conrath) Oberm. National Assessment: Red List of South African Plants version . Accessed on 2024/09/08 |
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