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Scientific Name | Aristea cistiflora J.C.Manning & Goldblatt |
Higher Classification | Monocotyledons |
Family | IRIDACEAE |
National Status |
Status and Criteria | Critically Endangered B1ab(iii)+2ab(iii) |
Assessment Date | 2022/01/17 |
Assessor(s) | H. Mtshali & J.C. Manning |
Justification | A narrow endemic, with an extent of occurrence (EOO) and area of occupancy (AOO) of 4 km², it is known from two severly fragmented subpopulations and there is an inferred continuing decline in the quality of its habitat due to the spread of invasive alien plants. This species is therefore assessed as Critically Endangered under criterion B. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | This Western Cape endemic is restricted to the Langeberg near Swellendam. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Swellendam Silcrete Fynbos |
Description | It occurs on lower southern slopes in peaty sandstone soil. It only flowers after fire or clearing of the veld. |
Threats |
| The quality of habitat is declining due to spreading alien invasive pines, black wattle and port jackson species, and inappropriate management of land. If these are not controlled, they may increase in density over time, eventually outcompeting native species. |
Population |
This range restricted species is known from two subpopulations the first was recorded by J. Manning in 2003 at Swellendam commonage and there is no information available on the subpopulation size, the second is known from an iNaturalist observation made in December 2021 and only 10 plants were seen. This species is likely to occur as small isolated subpopulations and is considered to be severely fragmented.
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Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Aristea cistiflora J.C.Manning & Goldblatt | VU D2 | Raimondo et al. (2009) | |
Bibliography |
Goldblatt, P. and Manning, J.C. 2020. Iridaceae of southern Africa. Strelitzia 42. South African National Biodiversity Institute, Pretoria.
Goldblatt, P., Dold, A.P. and manning, J.C. 2005. Three cryptic new species of Aristea (Iridaceae) from southern Africa. Bothalia 35(1):1-6.
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 |
| Mtshali, H. & Manning, J.C. 2022. Aristea cistiflora J.C.Manning & Goldblatt. National Assessment: Red List of South African Plants version . Accessed on 2025/04/13 |
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