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Scientific Name | Hydrostachys polymorpha Klotzsch ex A.Br. |
Higher Classification | Dicotyledons |
Family | HYDROSTACHYACEAE |
Synonyms | Hydrostachys natalensis Wedd. |
National Status |
Status and Criteria | Vulnerable D2 |
Assessment Date | 2006/06/07 |
Assessor(s) | E. Sieben, L. von Staden & D. Raimondo |
Justification | A habitat specialist with an AOO<10 km² in South Africa. It is potentially threatened by habitat degradation due to sedimentation and reduced water flow as a result of water extraction. The South African subpopulations are isolated from the rest of the global population, and the national assessment is not downgraded. |
Distribution |
Endemism | Not endemic to South Africa |
Provincial distribution | KwaZulu-Natal |
Range | Several rivers in the KwaZulu-Natal Midlands. Also occurs in the Kunene River on Namibia-Angola border and elsewhere in southern and central Africa as far north as the Congo. |
Habitat and Ecology |
Major system | Freshwater |
Major habitats | Eastern Valley Bushveld, KwaZulu-Natal Hinterland Thornveld, Midlands Mistbelt Grassland, Dry Coast Hinterland Grassland, Southern KwaZulu-Natal Moist Grassland |
Description | Grows on submerged rocks in clear, fast-flowing perennial streams, rapids and waterfalls. |
Threats |
| Harvesting [gathering], Habitat loss, Pollution (affecting habitat and/or species), Habitat degradation |
Population |
Population trend | Stable |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Hydrostachys polymorpha Klotzsch ex A.Br. | VU D2 | Raimondo et al. (2009) | | Hydrostachys polymorpha Klotzsch ex A.Br. | Data Deficient | Scott-Shaw (1999) | |
Bibliography |
Cook, C.D.K. 2004. Aquatic and wetland plants of southern Africa. Backhuys Publishers, Leiden, The Netherlands.
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.
Scott-Shaw, C.R. 1999. Rare and threatened plants of KwaZulu-Natal and neighbouring regions. KwaZulu-Natal Nature Conservation Service, Pietermaritzburg.
Sieben, E.J.J. 2009. The status and distribution of vascular plants (Magnoliophyta, Lycophyta, Pteridophyta). In: W.R.T. Darwall, K.G. Smith, D. Tweddle and P. Skelton (eds.), The status and distribution of freshwater biodiversity in southern Africa (pp. 83-98), IUCN and SAIAB, Gland, Switzerland and Grahamstown, South Africa.
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Citation |
| Sieben, E., von Staden, L. & Raimondo, D. 2006. Hydrostachys polymorpha Klotzsch ex A.Br. National Assessment: Red List of South African Plants version . Accessed on 2025/04/13 |
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