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Scientific Name | Aristea zeyheri Baker |
Higher Classification | Monocotyledons |
Family | IRIDACEAE |
National Status |
Status and Criteria | Vulnerable D2 |
Assessment Date | 2021/03/05 |
Assessor(s) | P. Goldblatt, J.E. Victor & P.P. Nzuza |
Justification | The species is endemic to the Western Cape and has a very restricted distribution to seasonally damp areas. It has an area of occupancy of less than 20 km², and is known from four locations that are potentially threatened by alien invasive plants. It is therefore listed as Vulnerable under criterion D. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | The species is restricted to the southwestern comer of the Western Cape Province in South Africa, where it occurs from the Cape Peninsula to Hermanus. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Peninsula Sandstone Fynbos, Overberg Sandstone Fynbos, Kogelberg Sandstone Fynbos, Hangklip Sand Fynbos, Atlantis Sand Fynbos |
Description | It is found on sandstone slopes, usually in damp sites. |
Threats |
| Plantations may have been a threat in the past (probably more than three generations ago). This species is currently not threatened, however alien invasive plants are present in low densities in some parts of the range and are likely to be a threat in the near future if left unmanaged. |
Population |
This species can be common in wet areas after fire. It is known from four subpopulations. The population size is unknown, but it is thought to be stable. Monitoring is required to determine population size and trend.
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Population trend | Stable |
Conservation |
| It is conserved in Vogelgat Nature Reserve and Cape Point Nature Reserve. |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Aristea zeyheri Baker | Rare | Raimondo et al. (2009) | |
Bibliography |
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.
Goldblatt, P. and Manning, J.C. 2020. Iridaceae of southern Africa. Strelitzia 42. South African National Biodiversity 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., Victor, J.E. & Nzuza, P.P. 2021. Aristea zeyheri Baker. National Assessment: Red List of South African Plants version . Accessed on 2024/12/07 |
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