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Scientific Name | Lapeirousia fastigiata (Lam.) Ker Gawl. |
Higher Classification | Monocotyledons |
Family | IRIDACEAE |
Synonyms | Ixia fastigiata Lam., Lapeirousia corymbosa (L.) Ker Gawl. subsp. fastigiata (Lam.) Goldblatt (in part), Lapeirousia purpureo-lutea (Klatt) Baker, Ovieda purpureo-lutea Klatt |
National Status |
Status and Criteria | Near Threatened B1ab(iii,v)+2ab(iii,v) |
Assessment Date | 2018/09/27 |
Assessor(s) | L. von Staden |
Justification | Lapeirousia fastigiata is a range-restricted species with an extent of occurrence (EOO) of 3500 km². It is declining due to ongoing habitat degradation, but is still fairly common, and estimated to occur at between 15 and 20 locations. Therefore it nearly meets the criteria thresholds for Vulnerable under criterion B. It is listed as Near Threatened. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | This species is endemic to a small area in the Western Cape of South Africa, where it occurs on the coastal lowlands between Piketberg and Malmesbury. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Swartland Shale Renosterveld, Piketberg Sandstone Fynbos, Swartland Granite Renosterveld, Swartland Silcrete Renosterveld, Leipoldtville Sand Fynbos, Northern Inland Shale Band Vegetation, Swartland Alluvium Fynbos |
Description | It grows on clay slopes and flats in renosterveld and renosterveld-sandstone ecotones. |
Threats |
| Historically Lapeirousia fastigiata has lost more than 80% of its habitat to crop cultivation on the renosterveld lowlands of the northern Swartland, but since most arable areas have already been ploughed, there is no significant ongoing loss of habitat. Recent field observations however indicate severe ongoing threat from overgrazing on small renosterveld remnants, as well as competition from spreading, uncontrolled alien invasive plants. |
Population |
Recent field observations recorded this species from at least 15 locations, indicating that it is still fairly common in spite of extensive habitat loss. Ten of these records are from small, isolated fragments, where the subpopulations are very small. The population continues to decline due to ongoing habitat degradation. Subpopulations across the Swartland are considered severely fragmented, but those around Piketberg, where it is still fairly common are not, and therefore more than 50% of the population is unlikely to be in small, isolated subpopulations.
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Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Lapeirousia fastigiata (Lam.) Ker Gawl. | NT B1ab(iii,v)+2ab(iii,v) | 2020.1 | | Lapeirousia fastigiata (Lam.) Ker Gawl. | VU B1ab(i,ii,iii,iv,v) | Raimondo et al. (2009) | |
Bibliography |
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. 2015. Systematics and biology of Lapeirousia, Codonorhiza, Psilosiphon and Schizorhiza in southern Africa. Strelitzia 35. 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 |
| von Staden, L. 2018. Lapeirousia fastigiata (Lam.) Ker Gawl. National Assessment: Red List of South African Plants version . Accessed on 2025/04/19 |
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