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Scientific Name | Nidorella tongensis Hilliard |
Higher Classification | Dicotyledons |
Family | ASTERACEAE |
National Status |
Status and Criteria | Endangered B1ab(iii) |
Assessment Date | 2020/02/10 |
Assessor(s) | L. von Staden |
Justification | Nidorella tongensis is a range-restricted species, with an extent of occurrence (EOO) of 4030 km². It is known from four locations and is declining due to ongoing habitat loss and degradation. It is therefore listed as Endangered under criterion B. |
Distribution |
Endemism | South African endemic |
Provincial distribution | KwaZulu-Natal |
Range | This species is endemic to South Africa, and is found from Kosi Bay to Mtunzini. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Northern Coastal Forest, Maputaland Coastal Belt, Subtropical Dune Thicket, Subtropical Seashore Vegetation, Muzi Palm Veld and Wooded Grassland, KwaZulu-Natal Coastal Belt Grassland, Maputaland Wooded Grassland |
Description | It occurs in damp places among dunes overlooking the sea. |
Threats |
| Nidorella tongensis is threatened by ongoing habitat loss and degradation. Around Richard's Bay habitat loss to urban and industrial development continues, particularly around Richard's Bay Harbour. At Mtunzini, it has lost habitat to timber plantations in the past, and is threatened by competition from alien invasive plants and coastal development. Around Muzi Swamp, it is threatened by ongoing habitat loss and degradation due to shifting subsistence agriculture and overgrazing. |
Population |
This species is currently known from four locations, but may be overlooked, particularly north of Richard's Bay where its habitat is still mostly intact.
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Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Nidorella tongensis Hilliard | EN B1ab(iii) | 2017.1 | | Nidorella tongensis Hilliard | Threatened | Raimondo et al. (2009) | | Nidorella tongensis Hilliard | Lower Risk - Least Concern | Scott-Shaw (1999) | |
Bibliography |
Hilliard, O.M. 1977. Compositae in Natal. University of Natal Press, Pietermaritzburg.
Hilliard, O.M. and Burtt, B.L. 1973. Notes on some plants of Southern Africa chiefly from Natal: III. Notes from the Royal Botanic Garden Edinburgh 32(3):303-387.
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. 2020. Nidorella tongensis Hilliard. National Assessment: Red List of South African Plants version . Accessed on 2024/12/08 |
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