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Scientific Name | Watsonia rogersii L.Bolus |
Higher Classification | Monocotyledons |
Family | IRIDACEAE |
Synonyms | Watsonia middlemostii L.Bolus |
National Status |
Status and Criteria | Near Threatened B1ab(ii,iii) |
Assessment Date | 2006/09/17 |
Assessor(s) | D. Raimondo & R.C. Turner |
Justification | EOO 4700 km², known from 10 locations but suspected to occur at a few more. Four of the 10 known locations are within reserves, but subpopulations outside of the reserves are still declining due to alien plant invasion and urban and agricultural development. This species only occurs on shale bands, a habitat that is particularly threatened by aliens and agriculture. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | Hottentots Holland and Kogelberg, eastwards to Hermanus, and the Riviersonderend Mountains near Villiersdorp. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Fynbos |
Description | Lower slopes or flats at the foot of mountains in rocky sand or clay. |
Population |
Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Watsonia rogersii L.Bolus | NT B1ab(ii,iii) | Raimondo et al. (2009) | | Watsonia rogersii L.Bolus | Rare | Hilton-Taylor (1996) | | Watsonia rogersii L.Bolus | Uncertain | 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.
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.
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 |
| Raimondo, D. & Turner, R.C. 2006. Watsonia rogersii L.Bolus. National Assessment: Red List of South African Plants version . Accessed on 2025/04/19 |
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