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Scientific Name | Ixia rivulicola Goldblatt & J.C.Manning |
Higher Classification | Monocotyledons |
Family | IRIDACEAE |
National Status |
Status and Criteria | Vulnerable D2 |
Assessment Date | 2015/08/07 |
Assessor(s) | D. van der Colff & L. von Staden |
Justification | A localized habitat specialist (AOO <10 km²), and potentially threatened by habitat degradation and disturbance due to crop cultivation and dam construction. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Northern Cape |
Range | Bo-Visrivier Catchment, Roggeveld Escarpment west of Sutherland. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Roggeveld Karoo, Roggeveld Shale Renosterveld |
Description | Shallow water close to river banks. |
Threats |
| This species is occurs in a fairly arid region, and streamsides are often cultivated as they are close to water sources for irrigation. In some places, cultivation may cause some habitat disturbance, but is unlikely to lead to habitat destruction. Dam construction could potentially lead to the loss of some subpopulations if streambanks are flooded, as well as drying out of downstream habitat. Several dams have already been constructed in the streams where this species occurs, and it appears that subpopulations persist downstream of dams. |
Population |
Ixia rivulicola is a localized habitat specialist, and the only species in the genus that grows in standing water. Recent field observations indicate that it is locally abundant in suitable habitat. Monitoring is required to determine whether agricultural expansion is having a negative impact on the population.
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Population trend | Stable |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Ixia rivulicola Goldblatt & J.C.Manning | VU D2 | 2015.1 | |
Bibliography |
Goldblatt, P. and Manning, J.C. 2008. Systematics of the southern African genus Ixia (Iridaceae). 1. The I. rapunculoides complex. Bothalia 38(1):1-22.
Snijman, D.A. 2013. Plants of the Greater Cape Floristic Region 2: The extra Cape flora. Strelitzia 30. South African National Biodiversity Institute, Pretoria.
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Citation |
| van der Colff, D. & von Staden, L. 2015. Ixia rivulicola Goldblatt & J.C.Manning. National Assessment: Red List of South African Plants version . Accessed on 2025/05/10 |
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