|
Scientific Name | Babiana horizontalis G.J.Lewis |
Higher Classification | Monocotyledons |
Family | IRIDACEAE |
National Status |
Status and Criteria | Vulnerable B1ab(iii,v)+2ab(iii,v) |
Assessment Date | 2021/04/30 |
Assessor(s) | P. Goldblatt, P.C.V. Van Wyk & D. Raimondo |
Justification | This is a restricted range endemic to the Richtersveld plant centre of endemism, it has an extent of occurrence (EOO) of 3 193 km², and an area of occupancy (AOO) of 36 km². It is known to occur at seven locations. It is declining in parts of its range due to severe overgrazing, and is listed as Vulnerable under criterion B. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Northern Cape |
Range | It is endemic to South Africa, and is found from the southern Richtersveld to Springbok in the Northern Cape. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Anenous Plateau Shrubland, Southern Richtersveld Scorpionstailveld, Central Richtersveld Mountain Shrubland, Namaqualand Klipkoppe Shrubland, Stinkfonteinberge Quartzite Fynbos |
Description | It occurs in succulent Karoo shrubland, in rock crevices on granite outcrops. |
Threats |
| Parts of this taxon's range is severely overgrazed as a result of livestock overstocking in communally owned areas, however it also occurs on mountain slopes and remote valleys where grazing pressure is currently low. As rangelands closer to settlements and on the western plains of the Richtersveld are increasingly degraded, herders are starting to move their livestock into more remote montane areas in search of grazing, and grazing pressure is likely to increase in future. |
Population |
Seven subpopulations are known. In 1977, it was recorded as being very rare in the Richtersveld, and in 2014, less than 10 plants were observed in Koeskopfontein. This species appears to always occur as scattered individuals. The population is declining due to overgrazing in parts of its range.
|
Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Babiana horizontalis G.J.Lewis | NT B1ab(v) | 2015.1 | | Babiana horizontalis G.J.Lewis | VU D2 | Raimondo et al. (2009) | | Babiana horizontalis G.J.Lewis | Insufficiently Known | Hilton-Taylor (1996) | | Babiana horizontalis G.J.Lewis | Uncertain | Hall et al. (1980) | |
Bibliography |
Goldblatt, P. and Manning, J.C. 2007. A revision of the southern African genus Babiana, Iridaceae, Crocoideae. Strelitzia 18:1-97. South African National Biodiversity Institute, Pretoria.
Goldblatt, P. and Manning, J.C. 2020. Iridaceae of southern Africa. Strelitzia 42. South African National Biodiversity Institute, Pretoria.
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.
Lewis, G.J. 1959. The genus Babiana. Journal of South African Botany Supplement 3:1-149.
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 |
| Goldblatt, P., Van Wyk, P.C.V. & Raimondo, D. 2021. Babiana horizontalis G.J.Lewis. National Assessment: Red List of South African Plants version . Accessed on 2025/04/13 |
Comment on this assessment
