Taxonomy
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
A range-restricted species (EOO 4030 km²) that is known from four locations and declining due to ongoing habitat loss and degradation.
Distribution
Endemism
South African endemic
Provincial distribution
KwaZulu-Natal
Range
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
Damp places among dunes overlooking the sea.
Threats
This species 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.


Population trend
Decreasing
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Nidorella tongensis HilliardEN B1ab(iii)2017.1
Nidorella tongensis HilliardThreatened Raimondo et al. (2009)
Nidorella tongensis HilliardLower 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.


Citation
von Staden, L. 2020. Nidorella tongensis Hilliard. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2020/07/09

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Distribution map


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