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Scientific Name | Brunsvigia radula (Jacq.) Aiton |
Higher Classification | Monocotyledons |
Family | AMARYLLIDACEAE |
National Status |
Status and Criteria | Endangered B1ab(iii,v)+2ab(iii,v) |
Assessment Date | 2022/05/17 |
Assessor(s) | D.A. Snijman, D. Raimondo, L. von Staden & N.A. Helme |
Justification | A range-restricted, localized Knersvlakte endemic, with an extent of occurrence (EOO) of 151 km² and an area of occupancy (AOO) of 28 km². It is known to occur at five locations and is threatened by habitat loss due to prospecting, mining and collecting for the specialist horticultural trade. The small global population, estimated to number fewer than 1000 mature individuals, continues to decline. It therefore meets the thresholds for Endangered under criterion B. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | This species is endemic to the Knersvlakte region of the Western Cape Province, South Africa. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Knersvlakte Dolomite Vygieveld |
Description | Plants occur on crevices and cracks in dolomite outcrops and limestone ridges. |
Threats |
| There are currently prospecting applications on all properties where this narrow endemic is known to occur. About 5% of this species' habitat has already been destroyed by prospecting and mining, and the current applications are highly likely to result in further habitat loss to mining. This species is also threatened by collecting for the specialist horticultural trade. |
Population |
The species is known from a few, localized subpopulations, of about a hundred or less plants each (Snijman 2012). One subpopulation has around 500 mature individuals (N.A. Helme pers. comm.).
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Population trend | Decreasing |
Conservation |
| Not conserved in any formally protected area. |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Brunsvigia radula (Jacq.) Aiton | EN B1ab(iii,v)+2ab(iii,v) | 2014.1 | | Brunsvigia radula (Jacq.) Aiton | VU C2a(i) | 2013.1 | | Brunsvigia radula (Jacq.) Aiton | VU C2a(i) | Raimondo et al. (2009) | | Brunsvigia radula (Jacq.) Aiton | EN A2c | Victor (2002) | |
Bibliography |
Dyer, R.A. 1950. A Review of the genus Brunsvigia. Plant Life 6:63-83.
Dyer, R.A. 1951. A Review of the genus Brunsvigia. Plant Life 7:44-64.
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. 2012. A revision of the Brunsvigia radula-group (Amaryllidaceae: Amaryllideae) of species in South Africa, including the description of Brunsvigia gariepensis a new species from Bushmanland in Northern Cape. South African Journal of Botany 79(1):106-116.
Victor, J.E. 2002. South Africa. In: J.S. Golding (ed), Southern African plant Red Data Lists. Southern African Botanical Diversity Network Report 14 (pp. 93-120), SABONET, Pretoria.
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Citation |
| Snijman, D.A., Raimondo, D., von Staden, L. & Helme, N.A. 2022. Brunsvigia radula (Jacq.) Aiton. National Assessment: Red List of South African Plants version . Accessed on 2025/05/09 |
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