Taxonomy
Scientific Name
Othonna armiana Van Jaarsv.
Higher Classification
Dicotyledons
Family
ASTERACEAE
National Status
Status and Criteria
Vulnerable D2
Assessment Date
2015/05/21
Assessor(s)
D. Raimondo & L. von Staden
Justification
A localized habitat specialist, known from one location and potentially threatened by overgrazing and collection of plants from the wild for the succulent trade.
Distribution
Endemism
South African endemic
Provincial distribution
Northern Cape
Range
Richtersveld, north-east of Eksteenfontein.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Kahams Mountain Desert
Description
Rock crevices on upper slopes.
Threats
Severe overstocking of livestock in the Richtersveld is causing ongoing degradation, loss of vegetation cover, and species diversity due to overgrazing and trampling. This species' preference for rocky crevices however may offer it some protection against the effects of grazing. It is also popular in horticulture, and is potentially threatened by collectors removing plants from the wild for the succulent trade.
Population

This species is locally abundant in suitable habitat (Van Jaarsveld 1986).


Population trend
Stable
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Othonna armiana Van Jaarsv.VU D22015.1
Othonna armiana Van Jaarsv.Critically Rare Raimondo et al. (2009)
Othonna armiana Van Jaarsv.Lower Risk - Near Threatened Victor (2002)
Othonna armiana Van Jaarsv.Rare Hilton-Taylor (1996)
Bibliography

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


Snijman, D.A. 2013. Plants of the Greater Cape Floristic Region 2: The extra Cape flora. Strelitzia 30. South African National Biodiversity Institute, Pretoria.


Van Jaarsveld, E.J. 1986. Othonna armiana (Asteraceae): a new species from the North-western Cape. South African Journal of Botany 52(6):569-571.


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
Raimondo, D. & von Staden, L. 2015. Othonna armiana Van Jaarsv. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2022/05/20

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Distribution map


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