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Scientific Name | Tritoniopsis williamsiana Goldblatt |
Higher Classification | Monocotyledons |
Family | IRIDACEAE |
National Status |
Status and Criteria | Rare |
Assessment Date | 2017/10/10 |
Assessor(s) | J.C. Manning & L. von Staden |
Justification | A highly range-restricted species (EOO <10 km²), known from two subpopulations. Its habitat is protected and it is not threatened. It is therefore listed under the IUCN 3.1 Criteria, globally, as Least Concern but is nationally categorised as Rare. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | This species has a very restricted distribution range in south Western Cape, where it occurs from the Kogelberg to Kleinrivier Mountain. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Overberg Sandstone Fynbos, Kogelberg Sandstone Fynbos |
Description | Plants grow in seepage zones on peaty sandstone soil, 300-500 m. |
Threats |
| There are no severe threats to this species. |
Population |
Population trend | Stable |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Tritoniopsis williamsiana Goldblatt | Rare | 2020.1 | | Tritoniopsis williamsiana Goldblatt | Critically 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.
Manning, J.C. and Goldblatt, P. 2012. Plants of the Greater Cape Floristic Region 1: The Core Cape Flora. Strelitzia 29. South African National Biodiversity 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 |
| Manning, J.C. & von Staden, L. 2017. Tritoniopsis williamsiana Goldblatt. National Assessment: Red List of South African Plants version . Accessed on 2025/04/14 |
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