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Scientific Name | Tritonia securigera (Aiton) Ker Gawl. subsp. watermeyeri (L.Bolus) J.C.Manning & Goldblatt |
Higher Classification | Monocotyledons |
Family | IRIDACEAE |
Synonyms | Montbretia watermeyeri (L.Bolus) Sealy, Tritonia watermeyeri L.Bolus |
National Status |
Status and Criteria | Least Concern |
Assessment Date | 2021/07/09 |
Assessor(s) | P. Goldblatt, J.C. Manning, K. Naidoo, R.C. Turner & T. Patel |
Justification | This taxon has an extent of occurrence (EOO) of 4 967 km², and an area of occupancy (AOO) of 56 km². It is known from not more than 20 subpopulations. It is a naturally rare taxon that occurs in localized subpopulations with few individuals. A small proportion of habitat (6%) has been lost to crop cultivation, but the majority of this taxon's habitat is not threatened. It is not in danger of extinction, and is therefore listed as Least Concern. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | It is endemic to South Africa, and is found from west of Robertson to Montagu through Barrydale and to Anysberg. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Western Little Karoo, Montagu Shale Renosterveld |
Description | It occurs on stony clay flats and lower slopes in succulent karoo. |
Threats |
| This taxon has lost a small proportion of its habitat (6% loss, calculated using landcover data in GIS) to agriculture in the past. The rest of its habitat remains intact, and it is not threatened. |
Population |
It is known from less than 20 subpopulations, with a stable population trend.
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Population trend | Stable |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Tritonia securigera (Aiton) Ker Gawl. subsp. watermeyeri (L.Bolus) J.C.Manning & Goldblatt | Rare | Raimondo et al. (2009) | | Tritonia watermeyeri L.Bolus | Rare | Hilton-Taylor (1996) | |
Bibliography |
De Vos, M.P. 1983. The African genus Tritonia Ker Gawler (Iridaceae): Part II. Sections Subcallosae and Montbretia. Journal of South African Botany 49:347-422.
Goldblatt, P. and Manning, J.C. 2020. Iridaceae of southern Africa. Strelitzia 42. South African National Biodiversity Institute, Pretoria.
Hilton-Taylor, C. 1996. Red data list of southern African plants. Strelitzia 4. South African National Botanical Institute, Pretoria.
Manning, J., Goldblatt, P. and Snijman, D. 2002. The color encyclopedia of Cape bulbs. Timber Press, Portland/Cambridge.
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 |
| Goldblatt, P., Manning, J.C., Naidoo, K., Turner, R.C. & Patel, T. 2021. Tritonia securigera (Aiton) Ker Gawl. subsp. watermeyeri (L.Bolus) J.C.Manning & Goldblatt. National Assessment: Red List of South African Plants version . Accessed on 2025/04/13 |
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