Taxonomy
Scientific Name
Othonna pygmaea Compton
Higher Classification
Dicotyledons
Family
ASTERACEAE
National Status
Status and Criteria
Rare
Assessment Date
2018/05/23
Assessor(s)
L. von Staden
Justification
Othonna pygmaea is a rare, range-restricted species with an extent of occurrence (EOO) of 47 km². It is known from two subpopulations, and is not suspected to be in danger of extinction, and may be more common than records suggest. 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
Northern Cape, Western Cape
Range
This species is endemic to South Africa, and is found from the southern Bokkeveld Escarpment to Biedouw Valley.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Nardouw Sandstone Fynbos, Bokkeveld Sandstone Fynbos, Cederberg Sandstone Fynbos
Description
It occurs in shallow depressions or crevices in sandstone pavements.
Threats
There are no severe threats to Othonna pygmaea. Its specific habitat is not suitable to cultivation, which is the dominant cause of habitat loss for plant species in this region.
Population

It is a rare and localized habitat specialist, known from two subpopulations, and last recorded in 1972. Plants are small and very easily overlooked, and therefore it is likely to be more common than records suggest. Field surveys are needed to gain a better understanding of the distribution and abundance of this species. The population is not suspected to be declining.


Population trend
Stable
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Othonna pygmaea ComptonRare 2020.1
Othonna pygmaea ComptonLeast Concern Raimondo et al. (2009)
Bibliography

Compton, R.H. 1953. Three small species of Othonna. Journal of South African Botany 19:137-143.


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
von Staden, L. 2018. Othonna pygmaea Compton. National Assessment: Red List of South African Plants version . Accessed on 2024/07/18

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Distribution map


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