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Scientific Name | Hesperantha dolomitica Goldblatt & J.C.Manning |
Higher Classification | Monocotyledons |
Family | IRIDACEAE |
National Status |
Status and Criteria | Endangered B1ab(i,ii,iii,v)+2ab(i,ii,iii,v) |
Assessment Date | 2021/05/26 |
Assessor(s) | P. Goldblatt, J.C. Manning, N.A. Helme, D. van der Colff & T. Patel |
Justification | A localized habitat specialist with an extent of occurrence (EOO) and area of occupancy (AOO) of 8 km². It is currently only known from two locations where it is threatened by habitat loss to mining. It is therefore listed as Endangered under criteria B. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | It is endemic to South Africa, and is found in Knersvlakte in southern Namaqualand in Western Cape. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Knersvlakte Quartz Vygieveld |
Description | It occurs in cracks in limestone outcrops and cliffs, occasionally in loamy soils at the base of limestone cliffs. |
Threats |
| This species' habitat is already partially disturbed as a result of prospecting activities, and there are now mining applications on both farms where it is known to occur, which is very likely to be authorised (N.A. Helme pers. comm.). |
Population |
It is known from only two subpopulations, which may soon be lost to limestone mining. Less than 50 plants were observed in one of the localities in 2012. The population trend is decreasing.
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Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Hesperantha dolomitica Goldblatt & J.C.Manning | EN B1ab(i,ii,iii,v)+2ab(i,ii,iii,v) | 2015.1 | |
Bibliography |
Goldblatt, P. and Manning, J.C. 2013. New taxa of Hesperantha (Iridaceae: Crocoideae) from the southern African winter rainfall region and a review of the H. pilosa complex. Bothalia 43(2):145-151.
Goldblatt, P. and Manning, J.C. 2020. Iridaceae of southern Africa. Strelitzia 42. South African National Biodiversity Institute, Pretoria.
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Citation |
| Goldblatt, P., Manning, J.C., Helme, N.A., van der Colff, D. & Patel, T. 2021. Hesperantha dolomitica Goldblatt & J.C.Manning. National Assessment: Red List of South African Plants version . Accessed on 2025/04/13 |
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