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Scientific Name | Aristea cantharophila Goldblatt & J.C.Manning |
Higher Classification | Monocotyledons |
Family | IRIDACEAE |
National Status |
Status and Criteria | Near Threatened B1ab(ii,iii,v)+2ab(ii,iii,v) |
Assessment Date | 2021/04/16 |
Assessor(s) | D. Raimondo, N.A. Helme, P. Goldblatt & P.P. Nzuza |
Justification | This Western Cape endemic has a restricted distribution range, with an extent of occurrence (EOO) of 2258-2606 km², and an area of occupancy (AOO) of 92-112 km². Much of its habitat has been lost to forestry plantations, agriculture and urban expansion. It is known from more that 10 locations that continue to decline due to ongoing habitat loss to crop cultivation and encroachment from invasive alien acacias, especially in the Elgin valley. Therefore it nearly meets the thresholds for Vulnerable under criterion B. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | This species is endemic to a small area in the Western Cape, where it occurs from Du Toits Kloof to Bot River. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Swartland Shale Renosterveld, Western Ruens Shale Renosterveld, Kogelberg Sandstone Fynbos, Greyton Shale Fynbos, Elgin Shale Fynbos, Cape Winelands Shale Fynbos, Boland Granite Fynbos |
Description | It occurs on clay and granite slopes in fynbos or renosterveld. |
Threats |
| At least 40% of this species' habitat is irreversibly modified, predominantly due to habitat loss to agricultural expansion (vineyards, orchards and buchu) and urban development mainly in Elgin valley and around Somerset West. Subpopulations remains in fragments that are declining due to ongoing habitat loss, invasion by alien plants, and inappropriate management of land. |
Population |
Subpopulations are fragmented and occur in shale renosterveld and granite fynbos that continues to decline due to ongoing habitat loss to agricultural expansion and invasive alien species. Monitoring is required as there are only a few relic subpopulations known (Peter Goldblatt pers. obs. 2005).
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Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Aristea cantharophila Goldblatt & J.C.Manning | VU B1ab(ii,iii,v) | Raimondo et al. (2009) | |
Bibliography |
Goldblatt, P. and Manning, J.C. 1997. New species of Aristea (Iridaceae) from South Africa and notes on the taxonomy and pollination biology of section Pseudaristea. Novon 7(2):137-144.
Goldblatt, P. and Manning, J.C. 2000. Cape Plants: A conspectus of the Cape Flora of South Africa. Strelitzia 9. National Botanical Institute, Cape Town.
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., Helme, N.A., Goldblatt, P. & Nzuza, P.P. 2021. Aristea cantharophila Goldblatt & J.C.Manning. National Assessment: Red List of South African Plants version . Accessed on 2025/05/13 |
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