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Scientific Name | Syringodea longituba (Klatt) Kuntze subsp. violacea (M.P.de Vos) Goldblatt & J.C.Manning |
Higher Classification | Monocotyledons |
Family | IRIDACEAE |
Synonyms | Syringodea longituba (Klatt) Kuntze var. violacea M.P.de Vos |
National Status |
Status and Criteria | Near Threatened B2b(ii,iii,iv) |
Assessment Date | 2023/02/09 |
Assessor(s) | L. von Staden |
Justification | A range-restricted taxon (EOO 22 659 km²) known from 12-16 locations and declining due to habitat loss from crop cultivation in parts of its range. Suitable habitat at two sites has been completely destroyed. A large part of the taxon's range is not threatened, and plants are locally common. It is therefore classified as Near Threatened under criterion B. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | This taxon is widespread across the Little Karoo, from Matjiesfontein and Laingsburg through the Little Karoo to Bredasdorp and Riversdale. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Breede Shale Renosterveld, Montagu Shale Renosterveld, Matjiesfontein Shale Renosterveld, Uniondale Shale Renosterveld, Central Ruens Shale Renosterveld |
Description | It occurs on dry, rocky shale soils in renosterveld, thicket and succulent shrubland. |
Threats |
| A small proportion of this taxon's habitat in the southern Little Karoo and Overberg is cultivated. At two sites in the Overberg where it is known from historical records, no suitable habitat remains and it is presumed locally extinct. This taxon's preference for rocky soils may offer it some protection against agricultural expansion, as such areas are generally unsuitable to cultivation. Subpopulations in the northern Little Karoo between Matjiesfontein and Laingsburg are not threatened. |
Population |
This taxon is locally common in suitable habitat, and subpopulations are large. Continuing decline is inferred from ongoing habitat loss in the southern Little Karoo and the Overberg.
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Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Syringodea longituba (Klatt) Kuntze subsp. violacea (M.P.de Vos) Goldblatt & J.C.Manning | NT B1ab(iii) | 2017.1 | |
Bibliography |
De Vos, M.P. 1974. Die Suid-Afrikaanse genus Syringodea. Journal of South African Botany 40(3):201-254.
De Vos, M.P. 1983. Syringodea, Romulea. In: O.A. Leistner (ed). Flora of Southern Africa 7 Iridaceae, Part 2 Ixioideae, Fascicle 2:1-73. Botanical Research Institute, Pretoria.
Goldblatt, P. and Manning, J.C. 2020. Iridaceae of southern Africa. Strelitzia 42. South African National Biodiversity Institute, Pretoria.
Manning, J.C. and Goldblatt, P. 2012. Plants of the Greater Cape Floristic Region 1: The Core Cape Flora. Strelitzia 29. South African National Biodiversity Institute, Pretoria.
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Citation |
| von Staden, L. 2023. Syringodea longituba (Klatt) Kuntze subsp. violacea (M.P.de Vos) Goldblatt & J.C.Manning. National Assessment: Red List of South African Plants version . Accessed on 2025/04/14 |
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