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Scientific Name | Geissorhiza aspera Goldblatt |
Higher Classification | Monocotyledons |
Family | IRIDACEAE |
Synonyms | Geissorhiza secunda (P.J.Bergius) Ker Gawl. |
Common Names | Blou Sysie (a) |
National Status |
Status and Criteria | Least Concern |
Assessment Date | 2021/08/17 |
Assessor(s) | T. Patel |
Justification | This species is widespread and common, with an extent of occurrence (EOO) of 98 748 km², and an area of occupancy (AOO) of 1272 km². It is able to survive disturbance, and the population has a stable trend. It is therefore listed as Least Concern. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | A widespread species endemic to the Western Cape province of South Africa, extending from the Cape Peninsula east to the Langeberg at Tradouw Pass and north through the Olifants River Valley as far as the Gifberg, with an isolated subpopulation in the high country west of Bitterfontein in Namaqualand. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Fynbos, Succulent Karoo |
Description | It usually occurs on sandy slopes and flats, sometimes on granitic gravel. |
Threats |
| This species has lost habitat to agriculture, infrastructure, too frequent fires, competition from alien invasive species, mining and harvesting. |
Population |
The population is considered stable as despite losing habitat it is also able to survive in disturbed areas. It is known from more than 300 locations and remains common.
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Population trend | Stable |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Geissorhiza aspera Goldblatt | Least Concern | 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.
Vlok, J. and Schutte-Vlok, A.L. 2010. Plants of the Klein Karoo. Umdaus Press, Hatfield.
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Citation |
| Patel, T. 2021. Geissorhiza aspera Goldblatt. National Assessment: Red List of South African Plants version . Accessed on 2024/09/14 |
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