|
Scientific Name | Ixia thomasiae Goldblatt |
Higher Classification | Monocotyledons |
Family | IRIDACEAE |
National Status |
Status and Criteria | Endangered B1ab(ii,iii,iv,v)+2ab(ii,iii,iv,v) |
Assessment Date | 2012/11/05 |
Assessor(s) | L. von Staden & N.A. Helme |
Justification | A rare, and highly restricted species (EOO 2 km²), known from two to three locations and declining due to ongoing habitat loss to crop cultivation. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Northern Cape |
Range | Central Roggeveld Escarpment west of Middelpos. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Roggeveld Shale Renosterveld |
Description | Heavy clay soils on valley floors. |
Threats |
| Since 1996, there has been extensive expansion of crop fields within the very limited range of this species, and loss is continuing. |
Population |
This species is rare, and to date has only been found on two farms (Goldblatt and Manning 2011).
|
Population trend | Decreasing |
Notes |
| Plants from further north towards Calvinia previously included in this species have now been identified as a separate species, Ixia alata. |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Ixia thomasiae Goldblatt | Least Concern | 2012.1 | | Ixia thomasiae Goldblatt | Least Concern | Raimondo et al. (2009) | | Ixia thomasiae Goldblatt | Rare | Hilton-Taylor (1996) | |
Bibliography |
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.
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.
Snijman, D.A. 2013. Plants of the Greater Cape Floristic Region 2: The extra Cape flora. Strelitzia 30. South African National Biodiversity Institute, Pretoria.
|
Citation |
| von Staden, L. & Helme, N.A. 2012. Ixia thomasiae Goldblatt. National Assessment: Red List of South African Plants version . Accessed on 2025/05/09 |
Comment on this assessment
