Swartruggens Vexator

Taxonomy
Scientific Name
Vexatorella amoena (Rourke) Rourke
Higher Classification
Dicotyledons
Family
PROTEACEAE
Synonyms
Leucospermum alpinum (Salisb. ex Knight) Rourke subsp. amoenum Rourke
Common Names
Swartruggens Vexator (e)
National Status
Status and Criteria
Least Concern
Assessment Date
2019/07/01
Assessor(s)
A.G. Rebelo, H. Mtshali & L. von Staden
Justification
Vexatorella amoena has a restricted distribution range in the Western Cape Province, South Africa, where it has an extent of occurrence (EOO) of 1791 km². It is however locally abundant. As there are no severe threats to this species, the population is assumed to be stable, and therefore it is not in danger of extinction and is listed as Least Concern.
Distribution
Endemism
South African endemic
Provincial distribution
Western Cape
Range
This species occurs in the Koue Bokkeveld and Swartruggens mountains from Wuppertal to Karoopoort in the Western Cape Province, South Africa.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Winterhoek Sandstone Fynbos, Cederberg Sandstone Fynbos, Swartruggens Quartzite Fynbos
Description
It occurs on sandstone slopes in montane fynbos, 900-1800 m. Mature individuals are killed by fires, and only seeds survive. Seeds are released after ripening, and dispersed by ants to their underground nests, where they are protected from predation and fire. It is pollinated by insects.
Threats
Field observations noted presence of alien invasive plants in some parts of this species' habitat. However, this is not considered a severe threat at present.
Population

This species is locally abundant, occurring as dense stands or as scattered plants. More than 50% of the subpopulations are small, each with less than 250 mature individuals. The largest subpopulation occurs on the Baviaansberg, with over 10 000 individuals. Although alien invasive plants are present in parts of the range, no significant population decline is suspected.


Population trend
Stable
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Vexatorella amoena (Rourke) RourkeLeast Concern 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.


Rebelo, T. 2001. Sasol Proteas: A field guide to the proteas of southern Africa. (2nd ed.). Fernwood Press, Vlaeberg, Cape Town.


Citation
Rebelo, A.G., Mtshali, H. & von Staden, L. 2019. Vexatorella amoena (Rourke) Rourke. National Assessment: Red List of South African Plants version . Accessed on 2025/01/17

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Distribution map

© R.C. Turner

© R.C. Turner


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