Taxonomy
Scientific Name
Agathosma trichocarpa Holmes
Higher Classification
Dicotyledons
Family
RUTACEAE
National Status
Status and Criteria
Vulnerable D2
Assessment Date
2010/08/30
Assessor(s)
N.A. Helme, T. Trinder-Smith, D. Raimondo & L. von Staden
Justification
This species was thought to be extinct as it was not seen for more than 60 years. However, it was recently rediscovered at two locations in areas where it was known from old collections without precise locality details. One location is potentially threatened by alien invasive plants and too irregular fires.
Distribution
Endemism
South African endemic
Provincial distribution
Western Cape
Range
Piketberg and Tulbagh.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Piketberg Sandstone Fynbos, Breede Alluvium Fynbos
Description
Sandstone fynbos and fynbos-renosterveld ecotones, on flats and mountain plateaus.
Threats
There are no recorded threats to the Piketberg subpopulation. The Tulbagh subpopulation is potentially threatened by too infrequent fire and alien invasive plants.
Population

This species is locally common (more than 10 000 plants) on the southern Piketberg plateau. Subpopulation size at Tulbagh not estimated. The population is suspected to be stable at both locations.


Population trend
Stable
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Agathosma trichocarpa HolmesCritically Endangered (Possibly Extinct) Raimondo et al. (2009)
Agathosma trichocarpa HolmesVU D2Victor (2002)
Bibliography

Bolus Herbarium. The genus Agathosma, specimen data from the Bolus Herbarium Collections database. University of Cape Town, Cape Town. Downloaded on 2007.


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.


Pillans, N.S. 1950. A revision of Agathosma. Journal of South African Botany 16(2):55-177.


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.


Citation
Helme, N.A., Trinder-Smith, T., Raimondo, D. & von Staden, L. 2010. Agathosma trichocarpa Holmes. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2022/01/25

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Distribution map

© N.A. Helme


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