Taxonomy
Scientific Name
Tritoniopsis williamsiana Goldblatt
Higher Classification
Monocotyledons
Family
IRIDACEAE
National Status
Status and Criteria
Rare
Assessment Date
2017/10/10
Assessor(s)
J.C. Manning & L. von Staden
Justification
A highly range-restricted species (EOO <10 km²), known from two subpopulations. Its habitat is protected and it is not threatened. It is therefore listed under the IUCN 3.1 Criteria, globally, as Least Concern but is nationally categorised as Rare.
Distribution
Endemism
South African endemic
Provincial distribution
Western Cape
Range
This species has a very restricted distribution range in south Western Cape, where it occurs from the Kogelberg to Kleinrivier Mountain.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Overberg Sandstone Fynbos, Kogelberg Sandstone Fynbos
Description
Plants grow in seepage zones on peaty sandstone soil, 300-500 m.
Threats
There are no severe threats to this species.
Population
Population trend
Stable
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Tritoniopsis williamsiana GoldblattRare 2020.1
Tritoniopsis williamsiana GoldblattCritically Rare Raimondo et al. (2009)
Bibliography

Goldblatt, P. and Manning, J.C. 2000. Cape Plants: A conspectus of the Cape Flora of South Africa. Strelitzia 9. National Botanical Institute, Cape Town.


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.


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
Manning, J.C. & von Staden, L. 2017. Tritoniopsis williamsiana Goldblatt. National Assessment: Red List of South African Plants version . Accessed on 2024/07/12

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Distribution map


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