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Scientific Name | Hesperantha hantamensis Schltr. ex R.C.Foster |
Higher Classification | Monocotyledons |
Family | IRIDACEAE |
National Status |
Status and Criteria | Vulnerable D2 |
Assessment Date | 2023/06/01 |
Assessor(s) | P. Goldblatt, K. Naidoo, R.C. Turner & T. Patel |
Justification | This species has an extent of occurrence (EOO) of 379 km², and an area of occupancy (AOO) of 36 km². It is known from five locations. Even though it is locally common and partly conserved in a nature reserve, it was and remains potentially threatened by dam expansion and road widening. It is therefore listed as Vulnerable under criteria D. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Northern Cape |
Range | It is a very narrow endemic of South Africa, known from the southern and eastern foot and lower slopes of the Hantamsberg and the adjacent Keiskieberge near Calvinia, Northern Cape. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Hantam Karoo |
Description | It occurs in renosterveld, on shale flats, favouring soils derived from dolerite. |
Threats |
| Part of its distribution area falls within the Akkerendam Nature Reserve; the species occupies such a restricted area however, that road widening or extension of the Akkerendam Dam in the reserve could immediately endanger this species (P. Goldblatt, pers. comm.). |
Population |
It is known from five locations and the population trend is stable.
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Population trend | Stable |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Hesperantha hantamensis Schltr. ex R.C.Foster | VU D2 | Raimondo et al. (2009) | | Hesperantha hantamensis Schltr. ex R.C.Foster | 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. 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.
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Citation |
| Goldblatt, P., Naidoo, K., Turner, R.C. & Patel, T. 2023. Hesperantha hantamensis Schltr. ex R.C.Foster. National Assessment: Red List of South African Plants version . Accessed on 2025/04/13 |
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