|
Scientific Name | Ixia dubia Vent. |
Higher Classification | Monocotyledons |
Family | IRIDACEAE |
Synonyms | Gladiolus umbellatus Schrank, Ixia frederickii M.P.de Vos |
National Status |
Status and Criteria | Least Concern |
Assessment Date | 2015/06/13 |
Assessor(s) | D. Raimondo & L. von Staden |
Justification | A widespread species that is still common in spite of extensive habitat loss on the lowlands, and not yet in danger of extinction. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | Piketberg to the Cape Peninsula, Caledon and Hermanus. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Fynbos |
Description | Sandstone and granite flats and slopes. |
Threats |
Habitat loss to urban and agricultural expansion has caused extensive decline across this species' range, and habitat loss continues. Subpopulations on small fragments are further subjected to ongoing habitat degradation as a result of inappropriate fire management, and competition from unmanaged alien invasive plants. |
Population |
The population of this widespread species has been fragmented due to habitat loss on the Cape lowlands, but many recent records indicate that it is still common. Subpopulations in montane areas are still mostly intact, and are fairly well protected.
|
Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | Ixia dubia Vent. | Least Concern | 2015.1 | Ixia dubia Vent. | Declining | Raimondo et al. (2009) | Ixia frederickii M.P.de Vos | Endangered | Hilton-Taylor (1996) | |
Bibliography |
De Vos, M.P. 1999. Ixia. In: O.A. Leistner (ed). Flora of Southern Africa 7 Iridaceae Part 2: Ixioideae, Fascicle 1: Ixieae:3-87. National Botanical Institute, Pretoria.
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. 2016. Systematics of the southern African genus Ixia L. (Iridaceae): 5. Synopsis of section Ixia, including five new species. South African Journal of Botany 104:175-198.
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. 2015. Ixia dubia Vent. National Assessment: Red List of South African Plants version . Accessed on 2025/02/11 |