Taxonomy
Scientific Name
Euchaetis intonsa I.Williams
Higher Classification
Dicotyledons
Family
RUTACEAE
National Status
Status and Criteria
Vulnerable D2
Assessment Date
2019/03/27
Assessor(s)
L. von Staden
Justification
Euchaetis intonsa is a highly-localized species, with an extent of occurrence (EOO) of 234 km², and an area of occupancy (AOO) of 36 km². It is known from three locations and potentially threatened by competition from alien invasive plants.
Distribution
Endemism
South African endemic
Provincial distribution
Western Cape
Range
This species is endemic to De Hoop Nature Reserve in the Western Cape.
Habitat and Ecology
Major system
Terrestrial
Major habitats
De Hoop Limestone Fynbos
Description
It occurs on southeast-facing slopes in coastal limestone fynbos.
Threats
Most of this species' habitat is infested with alien invasive plants that are outcompeting native species. There has been efforts to clear alien invasive plants inside De Hoop Nature Reserve, but recent field observations indicate that alien invasive plants are still present, requiring ongoing management and clearing. Two subpopulations occur outside the boundaries of De Hoop Nature Reserve, where it is not known how much effort is put into clearing alien invasive plants.
Population

This species is rare, and known from a few small subpopulations. The population size and trend is not known, and requires monitoring to determine the impact of alien invasive plants. It was last recorded in 2005.


Population trend
Unknown
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Euchaetis intonsa I.WilliamsRare Raimondo et al. (2009)
Euchaetis intonsa I.WilliamsVU D2Victor (2002)
Euchaetis intonsa I.WilliamsRare Hilton-Taylor (1996)
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.


Hilton-Taylor, C. 1996. Red data list of southern African plants. Strelitzia 4. South African National Botanical Institute, Pretoria.


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.


Victor, J.E. 2002. South Africa. In: J.S. Golding (ed), Southern African plant Red Data Lists. Southern African Botanical Diversity Network Report 14 (pp. 93-120), SABONET, Pretoria.


Williams, I. 1981. Studies in the genera of the Diosmeae (Rutaceae): 10. A review of the genus Euchaetis. Journal of South African Botany 47(2):157-193.


Citation
von Staden, L. 2019. Euchaetis intonsa I.Williams. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2020/07/10

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Distribution map

© C. Paterson-Jones


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