|
Scientific Name | Ixia tenuifolia Vahl |
Higher Classification | Monocotyledons |
Family | IRIDACEAE |
Synonyms | Ixia framesii L.Bolus |
National Status |
Status and Criteria | Endangered B1ab(i,iii,iv,v) |
Assessment Date | 2012/11/01 |
Assessor(s) | D. Raimondo & L. von Staden |
Justification | EOO 18 km², plants at two to three remaining locations continue to decline due to competition from alien invasive plants. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | Malmesbury to Darling and Kalbaskraal. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Atlantis Sand Fynbos |
Description | Seasonally moist loamy flats. |
Threats |
| Expansion of crop cultivation has reduced this species' habitat in the past. Currently, all known remaining subpopulations are threatened by competition from alien invasive plants. |
Population |
Historically, this species has always had a very restricted range (original EOO 31 km²), and this has now been much reduced by habitat loss and degradation. Currently, two to three subpopulations remain. One is protected within the Riverlands Provincial Nature Reserve, where alien invasive plants have been cleared, but ongoing management is required to prevent reinvasion. Two other sites are overrun with invasive wattles. At one of these, the species was last recorded in 1995, and it is uncertain whether this subpopulation survives.
|
Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Ixia tenuifolia Vahl | EN B1ab(i,iii,iv,v) | Raimondo et al. (2009) | | Ixia tenuifolia Vahl | Endangered | Hilton-Taylor (1996) | | Ixia framesii L.Bolus | Endangered | Hall et al. (1980) | |
Bibliography |
Goldblatt, P. and Manning, J.C. 2000. Cape Plants: A conspectus of the Cape Flora of South Africa. Strelitzia 9. National Botanical Institute, Cape Town.
Goldblatt, P. and Manning, J.C. 2011. Systematics of the southern African genus Ixia (Iridaceae). 3. Sections Hyalis and Morphixia. Bothalia 41(1):83-134.
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.
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 |
| Raimondo, D. & von Staden, L. 2012. Ixia tenuifolia Vahl. National Assessment: Red List of South African Plants version . Accessed on 2025/08/20 |
Comment on this assessment
