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Scientific Name | Geissorhiza unifolia Goldblatt |
Higher Classification | Monocotyledons |
Family | IRIDACEAE |
National Status |
Status and Criteria | Rare |
Assessment Date | 2021/10/28 |
Assessor(s) | N.A. Helme, L. von Staden & T. Patel |
Justification | This is a rare and very localized habitat specialist with an extent of occurrence (EOO) of 416 km² and an area of occupancy (AOO) of 20 km². It is known from four subpopulations which occur in protected high altitude habitat where it is not threatened. It is therefore listed globally under the IUCN 3.1. criteria as Least Concern but is nationally categorised as Rare. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | It is endemic to the Western Cape province of South Africa, and is found in the northern Cederberg and northern Koue Bokkeveld mountains. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Winterhoek Sandstone Fynbos, Cederberg Sandstone Fynbos, Western Altimontane Sandstone Fynbos |
Description | It occurs at high elevations, on thin soils over damp ledges and crevices on upper sandstone slopes and cliffs, mostly on south-facing slopes. |
Threats |
| This species has no threats. |
Population |
The population has a stable trend and is not in danger of extinction. It is known from four subpopulations.
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Population trend | Stable |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Geissorhiza unifolia Goldblatt | Rare | Raimondo et al. (2009) | |
Bibliography |
Goldblatt, P. 1985. Systematics of the southern African genus Geissorhiza (Iridaceae-Ixioideae). Annals of the Missouri Botanical Garden 72(2):277-447.
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.
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 |
| Helme, N.A., von Staden, L. & Patel, T. 2021. Geissorhiza unifolia Goldblatt. National Assessment: Red List of South African Plants version . Accessed on 2024/09/14 |
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