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Scientific Name | Hesperantha quadrangula Goldblatt |
Higher Classification | Monocotyledons |
Family | IRIDACEAE |
National Status |
Status and Criteria | Rare |
Assessment Date | 2021/06/21 |
Assessor(s) | P. Goldblatt, K. Naidoo, R.C. Turner & T. Patel |
Justification | This species has an extent of occurrence (EOO) of 1,356 km² and an area of occupancy (AOO) of 16 km². It is known from four locations and primarily occurs on slopes with no known threats. It is therefore listed as Least Concern globally according to the IUCN 3.1 Criteria but is considered Rare on a national level. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Northern Cape |
Range | It is endemic to South Africa, and is restricted to the western Karoo in Northern Cape. It is recorded only from the Hantamsberg at Calvinia and on the Roggeveld Escarpment northwest of Middelpos. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Roggeveld Karoo, Hantam Karoo |
Description | It occurs on rocky dolerite or sandstone slopes and plateaus. |
Threats |
| This species has no known direct threats. It occurs in arid areas that are not easy to plough. |
Population |
It is known from four locations, with an unknown population size. The population trend is stable.
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Population trend | Stable |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Hesperantha quadrangula Goldblatt | Rare | Raimondo et al. (2009) | | Hesperantha quadrangula Goldblatt | Rare | Hilton-Taylor (1996) | |
Bibliography |
Goldblatt, P. 1984. A revision of Hesperantha (Iridaceae) in the winter rainfall area of southern Africa. Journal of South African Botany 50:14-141.
Goldblatt, P. 2003. A synoptic review of the African genus Hesperantha (Iridaceae: Crocoideae). Annals of the Missouri Botanical Garden 90(3):390-443.
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.
Snijman, D.A. 2013. Plants of the Greater Cape Floristic Region 2: The extra Cape flora. Strelitzia 30. South African National Biodiversity Institute, Pretoria.
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Citation |
| Goldblatt, P., Naidoo, K., Turner, R.C. & Patel, T. 2021. Hesperantha quadrangula Goldblatt. National Assessment: Red List of South African Plants version . Accessed on 2025/04/13 |
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