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Scientific Name | Watsonia wilmsii L.Bolus |
Higher Classification | Monocotyledons |
Family | IRIDACEAE |
National Status |
Status and Criteria | Least Concern |
Assessment Date | 2018/09/29 |
Assessor(s) | L. von Staden |
Justification | Watsonia wilmsii is a range-restricted, but locally common species known from 15-20 locations. It has an extent of occurrence (EOO) of 812 km², and has lost habitat to timber plantations in the past, but its remaining habitat is now protected, and it is no longer declining. It is listed as Least Concern. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Mpumalanga |
Range | This species is endemic to South Africa, and is found in Mpumalanga Drakensberg escarpment east of Lydenburg. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Long Tom Pass Montane Grassland, Northern Escarpment Dolomite Grassland, Lydenburg Thornveld |
Description | It is found on rocky slopes in montane grassland above 1500 m. |
Threats |
Historically, Watsonia wilmsii has lost about 40% of its habitat to timber plantations. Six locations known through historical records are now locally extinct. Most of its remaining habitat is however now protected, and there is no significant ongoing habitat loss. |
Population |
This species is fairly common on the Mpumalanga escarpment between Lydenburg and Sabie. There is no significant ongoing population decline.
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Population trend | Stable |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | Watsonia wilmsii L.Bolus | Least Concern | Raimondo et al. (2009) | Watsonia wilmsii L.Bolus | Rare | Hilton-Taylor (1996) | Watsonia wilmsii L.Bolus | Rare | Hall et al. (1980) | |
Bibliography |
Goldblatt, P. 1989. The genus Watsonia. A systematic monograph. Annals of Kirstenbosch Botanic Gardens 19:1-148. National Botanic Gardens, Cape Town.
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.
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Citation |
von Staden, L. 2018. Watsonia wilmsii L.Bolus. National Assessment: Red List of South African Plants version . Accessed on 2025/05/09 |