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Scientific Name | Hesperantha sufflava Goldblatt |
Higher Classification | Monocotyledons |
Family | IRIDACEAE |
National Status |
Status and Criteria | Endangered B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v) |
Assessment Date | 2023/06/02 |
Assessor(s) | D. Raimondo & H. Mtshali |
Justification | This species has an extent of occurrence (EOO) of 605 km², and an area of occupancy (AOO) of 24 km². It is known from four severely fragmented subpopulations, the largest of which is losing habitat for the development of a housing estate. Loss is ongoing and rapid. It is therefore listed as Endangered under criterion B. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | It is endemic to South Africa, and is found from Malmesbury to Durbanville in Western Cape. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Swartland Shale Renosterveld, Swartland Granite Renosterveld |
Description | It occurs on sandy gravel slopes in renosterveld. |
Threats |
| This species has lost 81% of its habitat (calculated using landcover data in GIS) from crop cultivation, which is a past threat. All potential suitable habitat surrounding Malmesbury has been converted. Urban development is also a threat: 99% of habitat of the largest subpopulation at the commonage was converted for housing between 2002- 2007. |
Population |
It is known from four fragmented subpopulations and the population is experiencing a decreasing trend. Less than 10 plants were observed in two locations: Malmesburg in 2017 and Hercules Pilaar in 2011. Less than 50 plants were observed in Klipheuwel in 2008.
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Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Hesperantha sufflava Goldblatt | CR B1ab(ii,iii,iv,v) | Raimondo et al. (2009) | |
Bibliography |
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.
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 |
| Raimondo, D. & Mtshali, H. 2023. Hesperantha sufflava Goldblatt. National Assessment: Red List of South African Plants version . Accessed on 2024/12/06 |
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