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Scientific Name | Watsonia dubia Eckl. ex Klatt |
Higher Classification | Monocotyledons |
Family | IRIDACEAE |
National Status |
Status and Criteria | Endangered D |
Assessment Date | 2007/01/31 |
Assessor(s) | I. Ebrahim & D. Raimondo |
Justification | This Northern Swartland endemic has lost over 80% of its habitat to crop cultivation over the past 120 years. There are only three remaining lowland locations where this species occurs and fewer than 250 mature individuals are extant. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | Citrusdal to Wellington. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Swartland Granite Renosterveld, Swartland Alluvium Fynbos, Breede Alluvium Fynbos |
Description | Granite and clay on lowland slopes in renosterveld. |
Threats |
| Only three locations remain after more than 80% of this species' habitat has been converted to crop fields. Two subpopulations are protected, one in a private and the other in a provincial nature reserve, and the third is on a privately owned farm where habitat loss to agricultural expansion is ongoing. |
Population |
About 100 plants is protected in a private nature reserve, and a few more occur in a nearby provincial nature reserve. A third subpopulation of between 100 and 200 plants occur on a privately owned farm near Wolseley.
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Population trend | Stable |
Conservation |
| Protected in the Elandsberg Private Nature Reserve and Voëlvlei Provincial Nature Reserve. |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Watsonia dubia Eckl. ex Klatt | EN D | Raimondo et al. (2009) | | Watsonia dubia Eckl. ex Klatt | Endangered | Hilton-Taylor (1996) | | Watsonia dubia Eckl. ex Klatt | 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 |
| Ebrahim, I. & Raimondo, D. 2007. Watsonia dubia Eckl. ex Klatt. National Assessment: Red List of South African Plants version . Accessed on 2025/05/09 |
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